Title :
An optimized symbol mapping of 8PSK modulation for BICM-ID in low SNR
Author :
Tian, Xinji ; Li, Lin
Author_Institution :
Sch. of Comput. Sci. & Technol., Henan Polytech. Univ., Jiaozuo, China
Abstract :
An optimized symbol mapping of 8PSK modulation is proposed for bit interleaved coded modulation with iteratively decoding (BICM-ID). The new scheme which uses the average near neighbor hamming distance in the constellation as design criterion in low SNR is composed two QPSK with different radius and phases. It reduces the average near neighbor hamming distance in the constellation by way of adjusting the size of radius. Analysis and simulation results show that the proposed scheme achieves better performance than the convectional signal mapping for a BICM-ID system in low SNR.
Keywords :
interleaved codes; iterative decoding; modulation coding; phase shift keying; 8PSK modulation; BICM-ID; average near neighbor hamming distance; bit interleaved coded modulation; iteratively decoding; low SNR; optimized symbol mapping; Constellation diagram; Euclidean distance; Hamming distance; Phase shift keying; Signal mapping; Signal to noise ratio; BICM-ID; average near neighbor hamming distance; low SNR; signal mapping;
Conference_Titel :
Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC), 2011 2nd International Conference on
Conference_Location :
Deng Leng
Print_ISBN :
978-1-4577-0535-9
DOI :
10.1109/AIMSEC.2011.6011084
