Decoding method and device with erasure detection for multilevel

Details Decoding method and device with erasure detection for multilevel Decoding method and device with erasure detection for multilevel

1988-12-21

1990-05-22

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 375, 375104, H04L 120

Patent

active

049282883

ABSTRACT:
In the receiver of a multi-level signal transmission system an unreliability signalling is generated for a decided channel symbol whenever the value of the sample originating said symbol lies within value regions comprising each decision threshold. Unreliability signallings relevant to each code symbol are counted and the existence of an erasure is signalled to the decoder when the number of unreliable channel symbols exceeds a predetermined number. The number of erasures in a codeword is also counted and erasure correction is disabled in the decoder when such a number exceeds a predetermined value.

REFERENCES:
patent: 4339823 (1982-07-01), Predina et al.
IBM Journal of Research Development, vol. 28, No. 2, Mar. 1984, pp. 150-1 "A Universal Reed-Solomon Decoder", Richard E. Blahut.

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