| 摘要 |
This invention modifies Viterbi decoding to improve BER. Within the state metric unit cascade block, this invention forces the unused ACS units decision bits to a 0 for the top rail and a 1 for the bottom rail. This invention modifies the final maximum state index with the selected decision bits from the unused ACS units. This invention uses the modified final maximum state index as the initial conditions for the k-1 traceback shift register. This invention also uses the final maximum state index to mask the generated pretraceback decision bits generated from the last block of ACS units.
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