Chip-synchronous CDMA multiplexer and method resulting in...

Details Chip-synchronous CDMA multiplexer and method resulting in... Chip-synchronous CDMA multiplexer and method resulting in...

2006-02-07

2006-02-07

Maung, Zarni (Department: 2151)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S342000, C455S126000, C375S346000

Reexamination Certificate

active

06996080

ABSTRACT:
A multiplexer and a method for chip-synchronous code-division multiple access (CDMA) signals produces a constant envelope signal. The output signal of the multiplexer permits use of a saturating (Class C) high power amplifier (HPA) resulting in a net increase in effective transmitter power usage. This multiplexer applies to a variety of CDMA spread spectrum modulation formats and has many applications, such as the IS-95 forward link interface, and CDMA and CDMA/FDMA (frequency-division multiple access) applications, including general cellular base station forward traffic channels, cellular subscriber station multiple-channel reverse traffic channels (e.g. IS-95 subscriber Internet access) and satellite downlinks.

REFERENCES:
patent: 5848105 (1998-12-01), Gardner et al.
patent: 5903555 (1999-05-01), Wildauer et al.
patent: 5956332 (1999-09-01), Rasanen et al.
patent: 6009090 (1999-12-01), Oishi et al.
patent: 6026129 (2000-02-01), Ohta et al.
patent: 6064663 (2000-05-01), Honkasalo et al.
patent: 6078576 (2000-06-01), Schilling et al.
patent: 6091759 (2000-07-01), Rotstein et al.
patent: 6108317 (2000-08-01), Jones et al.
patent: 6205167 (2001-03-01), Kamgar et al.
patent: 6240081 (2001-05-01), Khalona
patent: 6266320 (2001-07-01), Hedberg et al.
patent: 6298099 (2001-10-01), Resnikoff et al.
patent: 6349216 (2002-02-01), Alberth et al.
patent: 6366619 (2002-04-01), McCallister et al.
patent: 6373902 (2002-04-01), Park et al.
patent: 6393047 (2002-05-01), Popovic′
patent: 6396826 (2002-05-01), Ohlson et al.
patent: 6404823 (2002-06-01), Grange et al.
patent: 6445749 (2002-09-01), Feher
patent: 6449303 (2002-09-01), Hunton
patent: 6459723 (2002-10-01), Kim et al.
patent: 6466566 (2002-10-01), De Gaudenzi et al.
patent: 6493330 (2002-12-01), Miya et al.
patent: 6493334 (2002-12-01), Krzymien et al.
patent: 6501955 (2002-12-01), Durrant et al.
patent: 6504883 (2003-01-01), Morimoto et al.
patent: 6512417 (2003-01-01), Booth et al.
patent: 6515961 (2003-02-01), Weaver et al.
patent: 6516183 (2003-02-01), Hellmark
patent: 6553080 (2003-04-01), Resnikoff et al.
patent: 6556814 (2003-04-01), Klomsdorf et al.
patent: 6587511 (2003-07-01), Barak et al.
patent: 6594286 (2003-07-01), Chen et al.
patent: 6701163 (2004-03-01), Hiramatsu
Spilker et al, “Code Multiplexing via Majority Logic for GPS Modernization”, pp. 265-273, Sep. 15, 1998.
James J. Spilker, Jr. et al., “Code Multiplexing via Majority Logic for GPS Modernization”, pp. 265-273.
European Search Report, EP 00 94 8747.
Wada T et al: “A Constant Amplitude Coding for Orthogonal Multi-Code CDMA Systems”, Dec. 1, 1997, IEICE Trans Fundamentals, vol. E80-A No. 12 Dec. 1997, pp. 2477-2483.
Butman S et al: “Interplex—An Efficient Multi-Channel PSK/PM Telemetry System” International Conference on Communications Conference Record. ICC, Jun. 1971, pp. 46-5-46-10.
Supplementary European Search Report, Application No. EP 00 94 8747.

Affiliated with

Also associated with

Rating

Chip-synchronous CDMA multiplexer and method resulting in... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chip-synchronous CDMA multiplexer and method resulting in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chip-synchronous CDMA multiplexer and method resulting in... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3706470