DocumentCode :
1889844
Title :
Optimized symbol mapping for bit-interleaved coded modulation with iterative decoding
Author :
Yunfei, Feng ; Jianping, Li
Author_Institution :
Sch. of Inf. Eng., Commun. Univ. of China, Beijing
fYear :
2008
fDate :
10-12 Nov. 2008
Firstpage :
237
Lastpage :
240
Abstract :
Symbol mapping is very crucial for the performance of bit-interleaved coded modulation with iterative decoding (BICM-ID). In this paper, a new scheme of symbol mapping called Cross-8PSK-Quasi-Gray is proposed. The optimization scheme of Cross-8PSK is composed of two QPSK with different radius and phases. Through analysis and comparisons with three previously mentioned symbol mappings in terms of channel capacity and error performance, simulation results show that Cross-8PSK-Quasi-Gray mapping significantly outperforms set partitioning, semi set partitioning labeling maps in the aspects of both channel capacity and error performance. The overall performance of Cross-8PSK-Quasi-Gray mapping is nearly close to gray mapping in conventional 8PSK. Thus, Cross-8PSK-Quasi-Gray mapping is a good scheme for designing the power-efficient BICM.
Keywords :
Gray codes; channel capacity; error correction codes; interleaved codes; iterative decoding; quadrature phase shift keying; Cross-8PSK-Quasi-Gray mapping; QPSK; bit-interleaved coded modulation; channel capacity; error performance; iterative decoding; optimization; symbol mapping; AWGN; Analytical models; Channel capacity; Constellation diagram; Interleaved codes; Iterative decoding; Labeling; Modulation coding; Performance analysis; Power system modeling; Bit-interleaved coded modulation (BICM); Cross-8PSK; channel capacity; symbol mapping;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communication Technology, 2008. ICCT 2008. 11th IEEE International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2250-0
Electronic_ISBN :
978-1-4244-2251-7
Type :
conf
DOI :
10.1109/ICCT.2008.4716215
Filename :
4716215
Link To Document :
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