A Novel BICM-ID System Approaching Shannon-Limit at High Spectrum Efficiency

Zhixing YANG  Qiuliang XIE  Kewu PENG  Zhaocheng WANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E94-B   No.3   pp.793-795
Publication Date: 2011/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.793
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories for Communications
Keyword: 
APSK,  shaping,  EXIT chart,  BICM-ID,  

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Summary: 
A method to construct bit-interleaved coded modulation with iterative demapping and decoding (BICM-ID) is developed that approaches the Shannon limit very closely at high spectrum efficiency, where amplitude-phase shift keying (APSK) constellations are designed and chosen. For 1/2-rate 64APSK, the Es/N0 threshold derived through extrinsic information transfer (EXIT) charts is less than 0.55 dB away from the Shannon limit of the continuous-input additive white Gaussian noise (AWGN) channel, and exceeds the theoretical limit constrained by standard 64QAM-input.