System and method for generating multicarrier spread...

Details System and method for generating multicarrier spread... System and method for generating multicarrier spread...

2007-04-10

2010-12-28

Wang, Ted M (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S135000, C375S260000, C375S295000

Reexamination Certificate

active

07860151

ABSTRACT:
A method of generating a multicarrier spread spectrum signal having a constant envelope includes partitioning multiple spreading codes into at least a first portion of spreading codes and a second portion of spreading codes. First and second modulating signals, respectively, are formed from the first and second portions of spreading codes. A first carrier spread spectrum signal is modulated with the first modulating signal to form a first modulated carrier signal, and a second carrier spread spectrum signal is modulated with the second modulating signal to form a second modulated carrier signal. The first and second modulated carrier signals are summed to form the multicarrier spread spectrum signal. The method includes combining spreading codes from the multiple spreading codes using majority voting logic to form the first and second portions of spreading codes.

REFERENCES:
patent: 6335951 (2002-01-01), Cangiani et al.
patent: 7505506 (2009-03-01), Djuknic et al.
patent: 2002/0075907 (2002-06-01), Cangiani et al.
patent: 2002/0150068 (2002-10-01), Orr et al.
J. J. Spilker Jr. et al., “Code Multiplexing via Majority Logic for GPS Modernization”, ION GPS-98; Proceedings of the 11thInternational Technical Meeting of the Satellite Division of the Institute of Navigation, Nashville, TN Pt. 1; United States Sep. 15-18, 1998, pp. 265-273, 1998.
S. Butman et al., “Interplex-An Efficient Multichannel PSK/PM Telemetry System”, IEEE, Jun. 1972 pp. 415-419.

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