Title :
Comparison of multilevel coded modulation with different decoding methods over AWGN channels
Author :
Yuan, Dong-Feng ; Yao, Qi ; Wang, Cheng-Xiang ; Cao, Zhi-Gang
Author_Institution :
Dept. of Electr. Eng., Shandong Univ., Jinan, China
Abstract :
According to the “capacity rule”, the performance of multilevel coding (MLC) schemes with 8ASK modulation and three set partitioning strategies over AWGN channels is investigated. Two different decoding methods, which are multistage decoding (MSD) and parallel decoding on level (PDL), are used. In each scheme BCH codes with code lengths of 127 are used as component codes. Numerical results indicate that MSD is a sub-optimal decoding method of MLC for AWGN channels. For Ungerboeck partitioning (UP) and mixed partitioning (MP), the MSD method is strongly recommended to use for the MLC system, while for block partitioning (BP), PDL is suggested to use as a simple decoding method compared with MSD
Keywords :
AWGN channels; BCH codes; amplitude shift keying; channel coding; decoding; modulation coding; 8ASK modulation; AWGN channels; BCH codes; MLC schemes; Ungerboeck partitioning; block partitioning; capacity rule; code length; decoding methods; mixed partitioning; multilevel coded modulation; multistage decoding; parallel decoding on level; performance; set partitioning strategies; sub-optimal decoding method; AWGN channels; Channel capacity; Constellation diagram; Decoding; Delay effects; Modulation coding; Mutual information; Page description languages; Robustness; Signal mapping;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-6463-5
DOI :
10.1109/PIMRC.2000.881487
