Self-synchronizing interleaver for trellis encoder used in wirel

Details Self-synchronizing interleaver for trellis encoder used in wirel Self-synchronizing interleaver for trellis encoder used in wirel

1985-03-01

1987-06-30

Sloyan, T. J.

Excavating

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

Patent

active

046776265

ABSTRACT:
In the transmitter of a data communication system using QAM, a trellis coder with k-baud delay units is used for forward error correction. The output of the 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 plurality of distributed convolutional decoders are utilized to decode the received signal element. The distributed trellis decoder is self-synchronizing.

REFERENCES:
patent: 4015238 (1977-03-01), Davis
patent: 4130818 (1978-12-01), Snyder, Jr.

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