Demodulator phase correction for code division multiple access r

Details Demodulator phase correction for code division multiple access r Demodulator phase correction for code division multiple access r

1996-08-16

1999-06-08

Olms, Douglas W.

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

370209, 370320, 375205, H04J 1300

Patent

active

059109505

ABSTRACT:
A demodulator of a Code Division Multiple Access Receiver (CDMA) provides single user pilot code aided coherent demodulation of QPSK/CDMA signals using a switch and squarers instead of multipliers. Additionally, a coherent Multicode (MC) CDMA demodulator with a switch for sharing pilot and data correlator results is presented. This change in the demodulators reduces by one-half the number of additions required in the accumulator part for both, the CDMA and the MC-CDMA receiver.

REFERENCES:
patent: 4397039 (1983-08-01), McAuliffe
patent: 5325394 (1994-06-01), Bruckert
patent: 5442625 (1995-08-01), Gitlin et al.
patent: 5506865 (1996-04-01), Weaver, Jr.
patent: 5577025 (1996-11-01), Skinner et al.

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