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Found results for
 patents
1.
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Transmission signal generating/detecting method using code sequences, communication system using the same and measurement system using the same
| Application Number |
15286090 |
| Grant Number |
09735830 |
| Status |
In Force |
| Filing Date |
2016-10-05 |
| First Publication Date |
2017-02-23 |
| Grant Date |
2017-08-15 |
| Owner |
Nippon Techno-Resources, Inc. (Japan)
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| Inventor |
Asahina, Tadashi
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Abstract
The present invention provides a transmission method which generates and sends a transmission signal generated from a multiplexing OFDM signal or a multiplexing wavelet-OFDM signal employing a multiplexing-spread chip sequence in which a chip of a code sequence for spread and a code sequence for combination, and a chip of a code sequence for localization are multiplied and multiplexed, and a receiving method which makes a high SN ratio improvement rate possible by converting the received signal to a frequency domain to acquire the multiplexing-spread chip sequence and by performing de-spreading and localizing processing to detect a localized pulse. According to the data transmission using the transmission and receiving method, data is mapped into a code sequence, and the receiving side can detect the data as the kind of code sequence, the shift time of a localized pulse and the polarity at a high SN ratio improvement rate.
IPC Classes ?
- H04L 5/00 - Arrangements affording multiple use of the transmission path
- H04B 1/707 - Spread spectrum techniques using direct sequence modulation
- H04J 13/00 - Code division multiplex systems
- H04J 13/16 - Code allocation
- H04L 27/26 - Systems using multi-frequency codes
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2.
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Transmission signal generating/detecting method using code sequences, communication system using the same and measurement system using the same
| Application Number |
14051586 |
| Grant Number |
09467201 |
| Status |
In Force |
| Filing Date |
2013-10-11 |
| First Publication Date |
2014-02-06 |
| Grant Date |
2016-10-11 |
| Owner |
Nippon Techno-Resources, Inc. (Japan)
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| Inventor |
Asahina, Tadashi
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Abstract
The present invention provides a transmission method which generates and sends a transmission signal generated from a multiplexing OFDM signal or a multiplexing wavelet-OFDM signal employing a multiplexing-spread chip sequence in which a chip of a code sequence for spread and a code sequence for combination, and a chip of a code sequence for localization are multiplied and multiplexed, and a receiving method which makes a high SN ratio improvement rate possible by converting the received signal to a frequency domain to acquire the multiplexing-spread chip sequence and by performing de-spreading and localizing processing to detect a localized pulse. According to the data transmission using the transmission and receiving method, data is mapped into a code sequence, and the receiving side can detect the data as the kind of code sequence, the shift time of a localized pulse and the polarity at a high SN ratio improvement rate.
IPC Classes ?
- H04J 13/00 - Code division multiplex systems
- H04B 1/707 - Spread spectrum techniques using direct sequence modulation
- H04J 13/16 - Code allocation
- H04L 5/00 - Arrangements affording multiple use of the transmission path
- H04L 27/26 - Systems using multi-frequency codes
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3.
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METHOD OF DETECTING GENERATION OF TRANSMISSION SIGNAL USING CODE SEQUENCE, COMMUNICATION SYSTEM AND MEASURING SYSTEM
| Application Number |
JP2012059943 |
| Publication Number |
2012/141227 |
| Status |
In Force |
| Filing Date |
2012-04-11 |
| Publication Date |
2012-10-18 |
| Owner |
Nippon Techno-Resources, Inc. (Japan)
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| Inventor |
Asahina, Tadashi
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Abstract
The present invention provides a transmission method which generates and sends a transmission signal generated from a multiplexing OFDM signal or a multiplexing wavelet-OFDM signal employing a multiplexing-spread chip sequence in which a chip of a code sequence for spread and a code sequence for combination, and a chip of a code sequence for localization are multiplied and multiplexed, and a receiving method which makes a high SN ratio improvement rate possible by converting the received signal to a frequency domain to acquire the multiplexing-spread chip sequence and by performing de-spreading and localizing processing to detect a localized pulse. According to the data transmission using the transmission and receiving method, data is mapped into a code sequence, and the receiving side can detect the data as the kind of code sequence, the shift time of a localized pulse and the polarity at a high SN ratio improvement rate. Further, when used in a measuring system, the transmission and receiving method can obtain information associated with an object to be measured on the basis of the aspect and the characteristics of a localized pulse by calculating the localized pulse from a signal detected from the object to be measured at a high SN ratio improvement rate.
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