Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
2.
Methods and Apparatuses for Signaling with Geometric Constellations
Communication systems are described that use signal constellations, which have unequally spaced (i.e. ‘geometrically’ shaped) points. In many embodiments, the communication systems use specific geometric constellations that are capacity optimized at a specific SNR. In addition, ranges within which the constellation points of a capacity optimized constellation can be perturbed and are still likely to achieve a given percentage of the optimal capacity increase compared to a constellation that maximizes dmin, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 14/02 - Systèmes de transmission non caractérisés par le milieu utilisé pour la transmission caractérisés par l'utilisation de la modulation par impulsions
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
3.
Systems and Methods for Receiving Data Transmitted Using Non-Uniform QAM 256 Constellations via Fading Channels
Communication systems are described that use signal constellations, which have unequally spaced (i.e. ‘geometrically’ shaped) points. In many embodiments, the communication systems use specific geometric constellations that are capacity optimized at a specific SNR, over the Rayleigh fading channel. In addition, ranges within which the constellation points of a capacity optimized constellation can be perturbed and are still likely to achieve a given percentage of the optimal capacity increase compared to a constellation that maximizes dmin, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
Communication systems are described that use signal constellations, which have unequally spaced (i.e. ‘geometrically’ shaped) points. In many embodiments, the communication systems use specific geometric constellations that are capacity optimized at a specific SNR. In addition, ranges within which the constellation points of a capacity optimized constellation can be perturbed and are still likely to achieve a given percentage of the optimal capacity increase compared to a constellation that maximizes dmin, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 14/02 - Systèmes de transmission non caractérisés par le milieu utilisé pour la transmission caractérisés par l'utilisation de la modulation par impulsions
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
5.
Methods of receiving data transmitted using non-uniform multidimensional constellation and code rate pairs
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
6.
Methods and apparatuses for signaling with geometric constellations
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 14/02 - Systèmes de transmission non caractérisés par le milieu utilisé pour la transmission caractérisés par l'utilisation de la modulation par impulsions
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
7.
Methods and Apparatuses for Signaling with Geometric Constellations in a Rayleigh Fading Channel
Communication systems are described that use signal constellations, which have unequally spaced (i.e. ‘geometrically’ shaped) points. In many embodiments, the communication systems use specific geometric constellations that are capacity optimized at a specific SNR, over the Rayleigh fading channel. In addition, ranges within which the constellation points of a capacity optimized constellation can be perturbed and are still likely to achieve a given percentage of the optimal capacity increase compared to a constellation that maximizes dmin, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 14/02 - Systèmes de transmission non caractérisés par le milieu utilisé pour la transmission caractérisés par l'utilisation de la modulation par impulsions
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
9.
Systems and methods for receiving data transmitted using non-uniform QAM 256 constellations via fading channels
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04W 72/044 - Affectation de ressources sans fil sur la base du type de ressources affectées
H04W 72/0453 - Ressources du domaine fréquentiel, p. ex. porteuses dans des AMDF [FDMA]
10.
Communication systems capable of receiving and processing data using unequally spaced and uniform quadrature amplitude modulated 64 point symbol constellations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
11.
Methods of receiving data using unequally spaced quadrature amplitude modulated 64 point symbol constellations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
12.
Methods of receiving data using unequally spaced and uniform quadrature amplitude modulated 64 point symbol constellations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
13.
Methods and apparatuses for signaling with geometric constellations
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04B 14/02 - Systèmes de transmission non caractérisés par le milieu utilisé pour la transmission caractérisés par l'utilisation de la modulation par impulsions
14.
Methods and apparatuses for signaling with geometric constellations in a Rayleigh fading channel
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
16.
Methods of receiving data transmitted using unequally spaced constellations that provide reduced SNR requirements as compared to equally spaced constellations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
17.
Methods of transmitting data using unequally spaced constellations that provide reduced SNR requirements as compared to equally spaced constellations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
18.
Methods of transmitting data using uniform and non-uniform constellations with rings
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
19.
Methods of receiving data transmitted using non-uniform constellations with overlapping constellation point locations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
20.
Methods of receiving data using uniform and non-uniform constellations with rings
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
21.
Methods of transmitting data using non-uniform multidimensional constellation and code rate pairs
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/00 - Dispositions de supervision, de contrôle ou de test
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
22.
Methods of receiving data transmitted using non-uniform multidimensional constellation and code rate pairs
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
23.
Methods of communicating data transmitted using non-uniform multidimensional constellation and code rate pairs
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
24.
Receivers incorporating uniform and non-uniform constellations with rings
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04L 27/22 - Circuits de démodulationCircuits récepteurs
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
25.
Receivers incorporating non-uniform multidimensional constellations and code rate pairs
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04L 27/06 - Circuits de démodulationCircuits récepteurs
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
26.
Methods and apparatuses for signaling with geometric constellations in a Rayleigh fading channel
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 27/02 - Systèmes à courant porteur à modulation d'amplitude, p. ex. utilisant la manipulation par tout ou rienModulation à bande latérale unique ou à bande résiduelle
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04L 27/36 - Circuits de modulationCircuits émetteurs
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
28.
Receivers incorporating unequally spaced constellations that provide reduced SNR requirements as compared to equally spaced constellations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04L 27/22 - Circuits de démodulationCircuits récepteurs
H04L 27/20 - Circuits de modulationCircuits émetteurs
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
30.
Methods and apparatuses for signaling with geometric constellations
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 5/12 - Canaux caractérisés par le type de signal les signaux étant représentés par différentes modulations de phase d'une seule porteuse
H04L 27/36 - Circuits de modulationCircuits émetteurs
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
A61B 6/12 - Agencements pour détecter ou localiser des corps étrangers
A61B 6/00 - Appareils ou dispositifs pour le diagnostic par radiationsAppareils ou dispositifs pour le diagnostic par radiations combinés avec un équipement de thérapie par radiations
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
G06T 7/33 - Détermination des paramètres de transformation pour l'alignement des images, c.-à-d. recalage des images utilisant des procédés basés sur les caractéristiques
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04B 14/02 - Systèmes de transmission non caractérisés par le milieu utilisé pour la transmission caractérisés par l'utilisation de la modulation par impulsions
A61B 17/00 - Instruments, dispositifs ou procédés chirurgicaux
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
31.
Transmitters incorporating non-uniform multidimensional constellations and code rate pairs
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04L 27/20 - Circuits de modulationCircuits émetteurs
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
33.
Receivers incorporating non-uniform constellations with overlapping constellation point locations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04L 27/06 - Circuits de démodulationCircuits récepteurs
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
34.
Transmitters incorporating uniform and non-uniform constellations and adaptive selection
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
H04L 5/12 - Canaux caractérisés par le type de signal les signaux étant représentés par différentes modulations de phase d'une seule porteuse
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence
H03M 13/25 - Détection d'erreurs ou correction d'erreurs transmises par codage spatial du signal, c.-à-d. en ajoutant une redondance dans la constellation du signal, p. ex. modulation codée en treillis [TMC]
H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04B 15/00 - Suppression ou limitation du bruit ou des interférences
H04L 27/36 - Circuits de modulationCircuits émetteurs
35.
Transmitters incorporating unequally spaced constellations that provide reduced SNR requirements as compared to equally spaced constellations
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 27/02 - Systèmes à courant porteur à modulation d'amplitude, p. ex. utilisant la manipulation par tout ou rienModulation à bande latérale unique ou à bande résiduelle
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
Communication systems are described that use unequally spaced constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. One embodiment is a digital communications system including a transmitter transmitting signals via a communication channel, the transmitter including a coder capable of receiving user bits and outputting encoded bits at a rate, a mapper capable of mapping encoded bits to symbols in a constellation, and a modulator capable of generating a modulated signal for transmission via the communication channel using symbols generated by the mapper, wherein the constellation is unequally spaced and characterizable by assignment of locations and labels of constellation points to maximize parallel decode capacity of the constellation at a given signal-to-noise ratio so that the constellation provides a given capacity at a reduced signal-to-noise ratio compared to a uniform constellation that maximizes the minimum distance between constellation points of the uniform constellation.
45 - Services juridiques; services de sécurité; services personnels pour individus
Produits et services
technical consultation in the field of digital communications systems; providing information in the field of digital communications; providing information in the field of modulation and encoding of signals for digital communications licensing of intellectual property; licensing of intellectual property in the field of digital communications
39.
Methods and apparatuses for signaling with geometric constellations
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 27/02 - Systèmes à courant porteur à modulation d'amplitude, p. ex. utilisant la manipulation par tout ou rienModulation à bande latérale unique ou à bande résiduelle
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04B 14/02 - Systèmes de transmission non caractérisés par le milieu utilisé pour la transmission caractérisés par l'utilisation de la modulation par impulsions
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
A61B 6/12 - Agencements pour détecter ou localiser des corps étrangers
A61B 6/00 - Appareils ou dispositifs pour le diagnostic par radiationsAppareils ou dispositifs pour le diagnostic par radiations combinés avec un équipement de thérapie par radiations
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
G06T 7/33 - Détermination des paramètres de transformation pour l'alignement des images, c.-à-d. recalage des images utilisant des procédés basés sur les caractéristiques
A61B 17/00 - Instruments, dispositifs ou procédés chirurgicaux
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
40.
Systems and methods for transmitting data using parallel decode capacity optimized symbol constellations
Transmitters are described that use non-uniformly spaced symbol constellations that have increased capacity compared to conventional constellations. In many embodiments, a transmitter includes a coder configured to receive bits and output encoded bits, a mapper configured to map said encoded bits to symbols in a non-uniform symbol constellation selected from a plurality of symbol constellations, and a modulator configured to generate a signal for transmission via the communication channel using symbols generated by the mapper. In a variety of embodiments, wherein the non-uniform symbol constellation comprises a set of non-uniformly spaced constellation points, and the location points in the non-uniform symbol constellation are chosen to optimize parallel decode capacity of the non-uniform symbol constellation subject to at least one optimization constraint. In many embodiments, the non-uniform symbol constellation is a quadrature amplitude modulation constellation or a phase shift keyed constellation.
Communication systems are described that use signal constellations which have unequally spaced (i.e. “geometrically spaced,” or “non-uniform”) points. In many embodiments, the transmitters and receivers use specific non-uniform quadrature amplitude modulation (NU-QAM) constellations. In a variety of embodiments, NU-QAM constellations are capacity optimized using a bit-interleaved coded modulation (BICM, also referred to as “parallel decode”) capacity measure. In a number of embodiments, the transmitters and receivers are described that use specific NU-QAM constellations that provide gains in BICM capacity relative to constellations that maximize the minimum distance between constellation points.
Communication systems are described that use geometrically shaped constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. In several embodiments, the geometrically shaped is optimized based upon a capacity measure such as parallel decoding capacity or joint capacity. In many embodiments, a capacity optimized geometrically shaped constellation can be used to replace a conventional constellation as part of a firmware upgrade to transmitters and receivers within a communication system. In a number of embodiments, the geometrically shaped constellation is optimized for an Additive White Gaussian Noise channel or a fading channel.
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 23/02 - Appareils ou circuits locaux pour systèmes télégraphiques autres que ceux couverts par les groupes adaptés pour la signalisation orthogonale
H04L 27/36 - Circuits de modulationCircuits émetteurs
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
Design Methodology and Method and Apparatus for Signaling with Capacity Optimized Constellation Abstract Communication systems are described that use geometrically PSK shaped constellations that have increased capacity compared to conventional PSK constellations operating within a similar SNR band. The geometrically shaped PSK constellation is optimized based upon parallel decoding capacity. In many embodiments, a capacity optimized geometrically shaped constellation can be used to replace a conventional constellation as part of a firmware upgrade to transmitters and receivers within a communication system. In a number of embodiments, the geometrically shaped constellation is optimized for an Additive White Gaussian Noise channel or a fading channel. In numerous embodiments, the communication uses adaptive rate encoding and the location of points within the geometrically shaped constellation changes as the code rate changes.
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
A61B 6/12 - Agencements pour détecter ou localiser des corps étrangers
A61B 6/00 - Appareils ou dispositifs pour le diagnostic par radiationsAppareils ou dispositifs pour le diagnostic par radiations combinés avec un équipement de thérapie par radiations
A61B 34/20 - Systèmes de navigation chirurgicaleDispositifs pour le suivi ou le guidage d'instruments chirurgicaux, p. ex. pour la stéréotaxie sans cadre
G06T 7/33 - Détermination des paramètres de transformation pour l'alignement des images, c.-à-d. recalage des images utilisant des procédés basés sur les caractéristiques
A61B 17/00 - Instruments, dispositifs ou procédés chirurgicaux
A61B 90/00 - Instruments, outillage ou accessoires spécialement adaptés à la chirurgie ou au diagnostic non couverts par l'un des groupes , p. ex. pour le traitement de la luxation ou pour la protection de bords de blessures
46.
Methodology and method and apparatus for signaling with capacity optimized constellations
Communication systems are described that use geometrically shaped constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. In several embodiments, the geometrically shaped is optimized based upon a capacity measure such as parallel decoding capacity or joint capacity. In many embodiments, a capacity optimized geometrically shaped constellation can be used to replace a conventional constellation as part of a firmware upgrade to transmitters and receivers within a communication system. In a number of embodiments, the geometrically shaped constellation is optimized for an Additive White Gaussian Noise channel or a fading channel. In numerous embodiments, the communication uses adaptive rate encoding and the location of points within the geometrically shaped constellation changes as the code rate changes.
H04L 23/02 - Appareils ou circuits locaux pour systèmes télégraphiques autres que ceux couverts par les groupes adaptés pour la signalisation orthogonale
H04L 27/36 - Circuits de modulationCircuits émetteurs
H04L 27/38 - Circuits de démodulationCircuits récepteurs
H04L 27/04 - Circuits de modulationCircuits émetteurs
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.
Communication systems are described that use geometrically shaped constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. In several embodiments, the geometrically shaped is optimized based upon a capacity measure such as parallel decoding capacity or joint capacity. In many embodiments, a capacity optimized geometrically shaped constellation can be used to replace a conventional constellation as part of a firmware upgrade to transmitters and receivers within a communication system. In a number of embodiments, the geometrically shaped constellation is optimized for an Additive White Gaussian Noise channel or a fading channel.
min, are also described. Capacity measures that are used in the selection of the location of constellation points include, but are not limited to, parallel decode (PD) capacity and joint capacity.