An Improved Design of Gallager Mapping for LDPC-coded BICM-ID System
Gallager mapping uses different signal points with different probabilities by assigning several labels for one signal point, and thus provides a promising approach to achieving shaping gains. An important issue in Gallager mapping is how to assign labels for signal points. In this paper, two optimiz...
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University of Banja Luka
2016-06-01
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doaj-bd2e19123a64457c815688b7873675b42020-11-24T23:01:47ZengUniversity of Banja LukaElectronics1450-58432016-06-01201162110.7251/ELS1620016ZAn Improved Design of Gallager Mapping for LDPC-coded BICM-ID SystemLin Zhou0Weicheng Huang1Shengliang Peng2Yan Chen3Yucheng He4Huaqiao UniversityHuaqiao UniversityHuaqiao UniversityHuaqiao UniversityHuaqiao UniversityGallager mapping uses different signal points with different probabilities by assigning several labels for one signal point, and thus provides a promising approach to achieving shaping gains. An important issue in Gallager mapping is how to assign labels for signal points. In this paper, two optimized design rules for Gallager mapping of bit-interleaved coded modulation scheme with iterative decoding (BICM-ID) are proposed, where the Hamming distance among the labels for one signal point should be minimized. The extrinsic information transfer (EXIT) technique is utilized to design and analyze the proposed mapping patterns. Compared with conventional Gallager mapping, our proposed method provides extra shaping gain for the LDPC-coded BICM-ID system. And our proposed method supplies better performance than conventional uniform mapping with the same spectrum efficiency.http://electronics.etfbl.net/journal/Vol20No1/xPaper_03.pdflow-density parity-check (LDPC) codesGallager mappingquantization mappingbit-interleavediterative decoding |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lin Zhou Weicheng Huang Shengliang Peng Yan Chen Yucheng He |
spellingShingle |
Lin Zhou Weicheng Huang Shengliang Peng Yan Chen Yucheng He An Improved Design of Gallager Mapping for LDPC-coded BICM-ID System Electronics low-density parity-check (LDPC) codes Gallager mapping quantization mapping bit-interleaved iterative decoding |
author_facet |
Lin Zhou Weicheng Huang Shengliang Peng Yan Chen Yucheng He |
author_sort |
Lin Zhou |
title |
An Improved Design of Gallager Mapping for LDPC-coded BICM-ID System |
title_short |
An Improved Design of Gallager Mapping for LDPC-coded BICM-ID System |
title_full |
An Improved Design of Gallager Mapping for LDPC-coded BICM-ID System |
title_fullStr |
An Improved Design of Gallager Mapping for LDPC-coded BICM-ID System |
title_full_unstemmed |
An Improved Design of Gallager Mapping for LDPC-coded BICM-ID System |
title_sort |
improved design of gallager mapping for ldpc-coded bicm-id system |
publisher |
University of Banja Luka |
series |
Electronics |
issn |
1450-5843 |
publishDate |
2016-06-01 |
description |
Gallager mapping uses different signal points with different probabilities by assigning several labels for one signal point, and thus provides a promising approach to achieving shaping gains. An important issue in Gallager mapping is how to assign labels for signal points. In this paper, two optimized design rules for Gallager mapping of bit-interleaved coded modulation scheme with iterative decoding (BICM-ID) are proposed, where the Hamming distance among the labels for one signal point should be minimized. The extrinsic information transfer (EXIT) technique is utilized to design and analyze the proposed mapping patterns. Compared with conventional Gallager mapping, our proposed method provides extra shaping gain for the LDPC-coded BICM-ID system. And our proposed method supplies better performance than conventional uniform mapping with the same spectrum efficiency. |
topic |
low-density parity-check (LDPC) codes Gallager mapping quantization mapping bit-interleaved iterative decoding |
url |
http://electronics.etfbl.net/journal/Vol20No1/xPaper_03.pdf |
work_keys_str_mv |
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1725638764949143552 |