Diversity combiner with MLSE for digital cellular radio

Details Diversity combiner with MLSE for digital cellular radio Diversity combiner with MLSE for digital cellular radio

1992-05-12

1994-06-07

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

375 94, 375102, H04B 710, H04L 102, H04L 2706, H03D 100

Patent

active

053196775

ABSTRACT:
A diversity combiner for use with the maximum likelihood sequence estimator is disclosed. First and second receive channels produce demodulated replicas Z.sub.1 (k) and Z.sub.2 (k) of the transmitted symbol data I(k). The two signals are processed in a Viterbi equalizer to obtain a single branch metric calculation based on the two signals Z.sub.1 (k) and Z.sub.2 (k) . The Viterbi equalizer provides an estimated value of I(k) based on this single branch metric calculation, which is used for channel estimator for both antennas.

REFERENCES:
patent: 5065411 (1991-11-01), Muto
patent: 5127025 (1992-06-01), Okanoue
patent: 5191598 (1993-03-01), Backstrom et al.
D'Avella et al., "Evaluation of Diversity Schemes in TDMA Digital Mobile Radio", Global Communications, 1990, pp. 490-494.

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