Title :
Bi-directional SOVA decoding for turbo-codes
Author :
Chen, Jinghu ; Fossorier, Marc P C ; Lin, Shu ; Xu, Chengqi
Author_Institution :
Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA
Abstract :
In this letter, we present a bi directional SOVA-based decoding scheme for turbo-codes, which combines the soft-outputs provided by both forward and backward SOVA decodings. Importantly, we explain why this bi-directional decoding improves SOVA decoding. The simulation results show that bi-directional SOVA can achieve about the same performance as the Max-Log-MAP algorithm in turbo decoding.
Keywords :
Viterbi decoding; turbo codes; Max-Log-MAP algorithm; SOVA decoding; bi-directional decoding; simulation results; soft output Viterbi algorithm; turbo decoding; turbo-codes; Bidirectional control; Bit error rate; Concatenated codes; Convolutional codes; Error probability; Hardware; Iterative algorithms; Iterative decoding; Turbo codes; Viterbi algorithm;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.898722
