Title :
High-performance SOVA decoding for turbo codes over cdma2000 mobile radio
Author :
Wang, Duanyi ; Kobayashi, Hisashi
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
Abstract :
An improved version of the soft-output Viterbi algorithm (SOVA), which has been theoretically proven to be equivalent to the max-log-maximum a posteriori (max-log-MAP) algorithm but with greatly reduced decoding complexity, is applied to turbo codes over the 3rd generation cdma2000 mobile radio link. The BER and FER performances of the improved SOVA are evaluated by computer simulation, and compared with the max-log-MAP and the conventional SOVA algorithms. The simulation results verify that the improved SOVA scheme can offer the performance comparable to the max-log-MAP scheme, while the conventional SOVA is approximately 0.4 dB inferior to the max-log-MAP at 10-3 BER
Keywords :
Viterbi decoding; channel coding; code division multiple access; computational complexity; error statistics; land mobile radio; multipath channels; multiuser channels; radio links; turbo codes; 3rd generation radio link; BER performance; FER performance; cdma2000 mobile radio; channel coding; computer simulation; fading channel; high-performance SOVA decoding; max-log-MAP algorithm; max-log-maximum a posteriori algorithm; reduced decoding complexity; simulation results; soft-output Viterbi algorithm; turbo codes; Bit error rate; Computational modeling; Computer simulation; Costs; Iterative algorithms; Iterative decoding; Land mobile radio; Performance evaluation; Turbo codes; Viterbi algorithm;
Conference_Titel :
MILCOM 2000. 21st Century Military Communications Conference Proceedings
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-6521-6
DOI :
10.1109/MILCOM.2000.904938
