Pulse or digital communications – Repeaters – Testing
Patent
1987-05-01
1989-05-02
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
375 76, 371 41, H04L 2706
Patent
active
048274895
ABSTRACT:
A device for decoding coded digital signals for every symbol consisting of a plurality of binary signals comprises first circuit for generating a first reliability for every binary signal; hard decided from the received or reproduced signal, in the symbol and second circuit for generating a second reliability for every symbol consisting of n binary signals on the basis of the first reliability, whereby decoding processing e.g. soft decision decoding is effected for every signal, depending on the second reliability.
REFERENCES:
patent: 3908169 (1975-09-01), Tong
patent: 4535294 (1985-08-01), Ericksen et al.
patent: 4700357 (1987-10-01), Ast
patent: 4700365 (1987-10-01), Casey
Peterson "Error Correction Codes", MIT Press.
Amano Tetsuya
Doi Nobukazu
Imai Hideki
Izumita Morishi
Kaneko Mamoru
Chin Stephen
Griffin Robert L.
Hitachi , Ltd.
Hitachi Video Engineering Incorporated
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