Method and apparatus for error-control coding in a digital data communication system
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United States of America Patent
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Aug 12, 1997
Grant Date -
N/A
app pub date -
Feb 22, 1994
filing date -
Feb 19, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In order to ensure that a predetermined bit(s) of a bit sequence to be transmitted is correctly received by a receiver, the predetermined bit is extracted from the bit sequence. The extracted bit is encoded and then combined with a bit sequence which has not been extracted. The combined bit sequence is convolutionally encoded and then transmitted to the receiver. The bit sequence transmitted undergoes maximum-likelihood decoding using Viterbi algorithm, wherein the information of the predetermined bit encoding is used to decode the predetermined bit. Subsequently, the encoded predetermined bit portion is extracted and subjected to block decoding.
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