One-error correction convolutional coding system

Details One-error correction convolutional coding system One-error correction convolutional coding system

1975-09-24

1977-10-25

Atkinson, Charles E.

Communications: electrical

Digital comparator systems

G06F 1112

Patent

active

040558320

ABSTRACT:
A rate one-half random error convolutional coding system corrects the theoretical limit of one error out of four successive bits. An information bit stream is processed through the system encoder which is comprised of a two-bit shift register and a modulo-2 adder. The encoder generates a parity bit formed by the modulo-2 summing of successive pairs of information bits, and produces a convolved transmission bit stream. The system decoder is the replica of the encoder in combination with a two-bit syndrome register, an AND gate, complementary feedback circuitry, and an output modulo-2 adder.
Overall system performance is the simplest, fastest, and highest performing of all such systems known to date.

REFERENCES:
patent: 2956124 (1960-10-01), Hagelbarger
patent: 3227999 (1966-01-01), Hagelbarger
patent: 3469236 (1969-09-01), Gallager
patent: 3605090 (1971-09-01), Burton
patent: 3718905 (1973-02-01), Tong
patent: 3728678 (1973-04-01), Tong
patent: 3873971 (1975-03-01), En
patent: 3882457 (1975-05-01), En
Peterson & Weldon, Error-Correcting Codes, Second Edition, The MIT Press, 1972, Cambridge, Mass., pp. 392-401 and 427-431.

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