Microprocessor based BCH decoder

Details Microprocessor based BCH decoder Microprocessor based BCH decoder

1987-10-05

1989-08-08

Pellinen, A. D.

Excavating

G06F 1100

Patent

active

048560049

ABSTRACT:
A microprocessor based system which implements BCH decoder algorithms in a sufficiently efficient manner to allow real time BCH decoding of a BCH(255,131) code is disclosed. Table lookup operations utilizing successive M-bit serial portions of BCH encoded input data as table offsets permit the microprocessor to generate syndrome using M-bit parallel portions of the input data. Additional table lookup operations which utilize tables stored in ROM memory speed execution time of multiply operations and detection of roots for inverse error location polynomials.

REFERENCES:
patent: 4360916 (1979-12-01), Kustedjo et al.
patent: 4433415 (1984-02-01), Kojima
patent: 4471485 (1984-09-01), Prevot et al.
patent: 4646312 (1987-02-01), Goldsbury et al.
patent: 4648091 (1987-03-01), Gajjar
patent: 4665523 (1987-05-01), Citron et al.
patent: 4694455 (1987-09-01), Koga
patent: 4747103 (1988-05-01), Iwamura et al.
The Theory of Error Correcting Codes, MacWilliams et al., pp. 270-271, Dec. 1977.

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