H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/16 (2006.01) H04B 7/02 (2006.01) H04B 7/08 (2006.01) H04L 1/06 (2006.01)
Patent
CA 2065739
A method and apparatus for diversity reception in a communication system is provided. A dual branch receiver (102, 103) is provided with a stored replica of expected reference information so that correlation with received time-dispersed signals (100, 101) produces an estimate of the transmission channel's impulse response as seen by each branch, and determines, among other things, phase error between the branch local oscillators and the time-dispersed signals. Matched filters (214, 215) are constructed which then coherently align the time-dispersed signals from each branch with that branch's local oscillator (208, 209) which con- stitutes a part of the signal equalization. A diversity processor (105) performs bit by bit selection on the re-aligned signals, maxi- mal ratio combining of the re-aligned signals, or equal gain combining of the re-aligned signals, followed by a sequence estima- tion which uses similarly selected or combined channel distortion compensation parameters to complete the equalization process on the new signal.
Atkinson Frederick G.
Labedz Gerald P.
Rabe Duane C.
Schuler Joseph J.
Werronen Alton P.
Gowling Lafleur Henderson Llp
Motorola Inc.
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