H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/29, 325/3
H04J 13/00 (2006.01) H04B 1/707 (2006.01) H04L 1/04 (2006.01)
Patent
CA 2020455
FEED FORWARD SPREAD SPECTRUM SIGNAL PROCESSOR ABSTRACT A communications receiver for a code division multiple access (CDMA) sat- ellite communication system in which a plurality of data carriers share the same band. A pilot carrier transmits a timing reference used by all receivers to acquire the clock used in timing the code generators, and used as a frequency and phase refer- ence for data detection. This receiver employs a digital signal processor that detects a spread pilot carrier and uses the phase noise on the pilot carrier to subtract the com- munication link phase noise from the data carriers, thus allowing communication at lower signal-to-noise ratios.
Hughes Electronics Corporation
Sim & Mcburney
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