Self-synchronizing de-interleaver for viterbi decoder used in wi

Details Self-synchronizing de-interleaver for viterbi decoder used in wi Self-synchronizing de-interleaver for viterbi decoder used in wi

1985-03-01

1987-06-30

Sloyan, T. J.

Excavating

340347DD, 371 2, 375 26, 375 39, G06F 1110, H03M 1322

Patent

active

046776249

ABSTRACT:
In the transmitter of a data communication system using QAM, a plurality of trellis coders with delay units are used for forward error correction. The output of each encoder is modulated using QAM to generate sequential baud signal elements. The redundant data bits generated are distributed among several non-consecutive bauds. At the receiver a distributed convolutional decoder individually addressed having sectioned memory elements is utilized to decode the received signal element. The distributed trellis decoder is self-synchronizing.

REFERENCES:
patent: 4077021 (1978-02-01), Csajka et al.

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