Decision feedback demodulator with phase and frequency estimation
作者： Lansing M. Carson , Robert J. Burdge
DOI:
关键词:
摘要: A data communication receiver (10) uses a decision feedback demodulator (32) to remove from received signal. Quadrature components of the signal define phase. The phase is rotated (46) by an amount predicted compensate for and frequency errors. After this rotation, circuit (52) determines modulation current symbol. rotator (64) compares with generate measured error This errors past symbols are averaged in combination (80) produce estimate. also processed determine change that has occurred over number symbols. processing yields (94) merges estimates use compensating
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