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Comparison of multilevel coded modulations with different decoding methods for AWGN and Rayleigh fading channels

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4 Author(s)
Dong-feng Yuan ; Dept. of Electr. Eng., Shandong Univ., Jinan, China ; Cheng-Xiang Wang ; Qi Yao ; Zhi-Gang Cao

Multilevel coding (MLC) schemes based on channel capacity with multistage decoding (MSD) and parallel decoding on levels (PDL) are considered and compared. The channel models AWGN and Rayleigh fading are used in order to study the performance of MLC systems under different conditions. The investigation is done for 8ASK modulation and three set partitioning strategies. In each scheme BCH codes with different code lengths are used as component codes. Numerical results indicate that MSD is a sub-optimal decoding method of MLC for both channels, while PDL is most robust to varying channels if block partitioning (BP) is used. For Ungerboeck partitioning (UP) and mixed partitioning (MP) strategy, the MSD method is strongly recommended to use for the MLC system, while for the BP strategy, PDL is suggested to use as a simple decoding method compared with MSD

Published in:
Communications, 2000. ICC 2000. 2000 IEEE International Conference on  (Volume:3 )

Date of Conference: 2000

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