Generalized viterbi decoding algorithms
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United States of America Patent
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May 4, 1993
Issued Date -
N/A
app pub date -
Mar 11, 1992
filing date -
Aug 18, 1989
priority date (Note) -
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Abstract
A data transmission system and method for processing speech, image and other data disclosed which embodies parallel- and serial-generalized Viterbi decoding algorithms (GVA) that produce a rank ordered list of the L best candidates after a trellis search. Error detection is performed by identifying unreliable sequences through comparison of the likelihood metrics of the two or more most likely sequences. Unreliable sequences are re-estimated using inter-frame redundancy or retransmission.
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