Method of and circuit for decoding block-coded messages affected

Details Method of and circuit for decoding block-coded messages affected Method of and circuit for decoding block-coded messages affected

1988-05-06

1990-05-01

Fleming, Michael R.

Excavating

371 371, G06F 1110

Patent

active

049224948

ABSTRACT:
A method is described for decoding messages coded as blocks consisting of a fixed number of symbols and affected by symbol substitutions, deletions and insertions, wherein for each received message having a length comprised within predetermined limits, a sequence of words (error frames) is generated which comprise all possible error combinations which can be corrected in the message. By using such error frames, a decoded word is generated for each frame, the probability that a decoded word actually is the transmitted word is calculated and the decoded word, whose probability value satisfies predetermined criteria, is emitted as a decoded message. A device for carrying out the method is also provided.

REFERENCES:
patent: 4654854 (1987-03-01), Heppe
patent: 4675870 (1987-06-01), Baggin
patent: 4718066 (1988-01-01), Rogand
patent: 4805174 (1989-02-01), Kubota

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