Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1998-10-02
2000-12-19
Chin, Stephen
Pulse or digital communications
Spread spectrum
Direct sequence
375142, 375146, 375150, 375152, A61F 206, H04L 2730
Patent
active
061635669
ABSTRACT:
A spread spectrum communications system is provided for reducing the number of required matched filters to simplify the configuration associated with the reception. In a spread spectrum transmitter, a plurality of spread channel signals are synthesized by shifting their respective phases by a time sufficiently shorter than one symbol period. In a spread spectrum receiver, a plurality of spread code sequences are set one by one at a tap of a single matched filter in one symbol period in a time division manner to recover transmitted data.
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"Application Techniques for Spread Spectrum Communications Scheme" White Series No. 142, Triceps Co., Aug. 31, 1992.
Chin Stephen
Jiang Lenny
Kunitz Norman N.
Oki Electric Industry Co. Inc.
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