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Bit-reliability mapping in LDPC-coded modulation systems

delete2005-01-01
delete90
PRE
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W.E. Ryan
DOI：10.1109/LCOMM.200501010delete
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Abstract

Abstract

En 中文
In this paper, we propose a reliability-based mapping. strategy in LDPC-coded modulation systems. Compared to conventional mapping methods, this strategy gives a 0.15 dB - 0.2 dB performance improvement with no added complexity. Extrinsic information transfer (EXIT) chart analyses are used to explain the reason for this improvement. LDPC-coded modulation systems with Gray and natural labeling are studied. We show that the performances of Gray-labeled systems are always superior.
Keywords:
LDPC code
coded-thodulation
BICM
EXIT chart
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Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.

Journal

IEEE Communications Letters cover
IEEE Communications Letters
IF:
4.4
Papers:
1.3W
Citations:
2.2W

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