Pulse or digital communications – Repeaters – Testing
Patent
1991-02-28
1992-08-25
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
375 12, 375 94, 375 96, 375102, 375103, 371 43, 455 76, 455305, H04B 112, H03M 1312, H04L 2701
Patent
active
051425513
ABSTRACT:
A signal weighting system for associating a confidence level with portions of a communication signal transmitted upon a multipath channel and received by a receiver. A signal received by the receiver is equalized by an equalizer circuit, such as a maximum likelihood sequence estimator, and the equalized signal generated thereby is supplied to an adaptive filter which is synthesizes portions of the multipath channel. The signal received by the receiver is altered responsive to values of a filtered, equalized signal generated by the adaptive filter.
REFERENCES:
patent: 4484338 (1984-11-01), Clark et al.
patent: 4885757 (1989-12-01), Provence
patent: 4995104 (1991-02-01), Gitlin
patent: 5029186 (1991-07-01), Maseng et al.
patent: 5063573 (1991-11-01), Langewellpott
Gottfried Ungerboeck, "Adaptive Maximum-Likelihood Receiver for Carrier-Modulated Data-Transmission System", IEEE Transactions on Communications, vol. COM-22, No. 5, May 1974, pp. 624-636.
Borth David E.
Eyuboglu M. Vedat
Ling Fuyun
Rasky Phillip D.
Kelly Robert H.
Motorola Inc.
Safourek Benedict V.
Tse Young
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