High-speed convolutional decoder

Details High-speed convolutional decoder High-speed convolutional decoder

1989-06-13

1992-09-22

Smith, Jerry

Excavating

G06F 1110, H03M 1312

Patent

active

051503697

ABSTRACT:
A convolutional decoder for decoding a received message of digital data convolutionally encoded at a constraint length of K, comprises branch metric calculating circuitry for receiving the data and providing output signals indicative of the branch metrics therefor, a plurality of 2.sup.K-1 circuits for receiving the output signals and computing state metrics, the circuits being interconnected to form a trellis and generating decision bits and a plurality of 2.sup.K-1 memory circuits, the memory circuits being interconnected also to form a trellis and responsive to the decision bits to output a decoded digit of the received message data.

REFERENCES:
patent: 3789360 (1974-02-01), Clark, Jr. et al.
patent: 3842400 (1974-10-01), Liefeld et al.
patent: 4500994 (1985-02-01), McCallister et al.
patent: 4536878 (1985-08-01), Rattlingourd et al.
patent: 4742533 (1988-05-01), Weidner et al.
patent: 4823346 (1989-04-01), Kobayashi et al.
patent: 4932029 (1990-06-01), Heichler

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