Diode-configured Viterbi algorithm error correcting decoder for

Details Diode-configured Viterbi algorithm error correcting decoder for Diode-configured Viterbi algorithm error correcting decoder for

1983-09-09

1985-10-01

Atkinson, Charles E.

Excavating

G06F 1110

Patent

active

045450544

ABSTRACT:
A Viterbi algorithm error correcting decoder is configured of a trellis of branch-distance circuits each of which is formed of sets of diode and controlled interconnecting switches. During a respective bit time of the signal to be decoded, the branch-distance circuits are controlled so as to connect a number of diodes in each branch of the trellis proportional to the distance of the diode branch of interest to the received code branch. Due to the nonlinear voltage-current characteristic of a diode, only the path through the trellis of the branch-distance circuits having the minimum distance from the received data will draw current. Detection of this current-carrying path is used to implement the Viterbi algorithm decoder.

REFERENCES:
patent: 3538497 (1970-11-01), Harmon
patent: 3789360 (1974-01-01), Clark, Jr. et al.
patent: 4087787 (1978-05-01), Acampora
Clark, Jr. et al., Error-Correction Coding for Digital Communications, Plenum Press, New York, 1981, pp. 227-235.

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