Sequential decoding method and apparatus

Details Sequential decoding method and apparatus Sequential decoding method and apparatus

1986-10-22

1989-01-10

Smith, Jerry

Excavating

G06F 1110

Patent

active

047978872

ABSTRACT:
A sequential decoding of a convolutionally encoded sequence has been proposed. Decoding is carried out by extending paths along the branches of code-tree over plural tree levels at a time and calculating likelihood (metric) of the extended paths referring to the received sequence. Decoding is terminated when it proceeds to a node belonging to the last tree level of a data block. Then, one of the extended sequences associated with a node located at the last tree level which has the largest metric is output as a decoded sequence.

REFERENCES:
patent: 4539684 (1985-09-01), Kloker
patent: 4677625 (1987-06-01), Betts
G. C. Clark et al., "Error-Correction Coding for Digital Communications", 1981, pp. 326-328.

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