Exact and approximated expressions of the log-likelihood ratio for 16-QAM signals

被引：0

作者：

Allpress, S ^{[1
]}

Luschi, C ^{[1
]}

Felix, S ^{[1
]}

机构：

[1] Icera Inc, Bristol BS32 4AQ, Avon, England

来源：

CONFERENCE RECORD OF THE THIRTY-EIGHTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1 AND 2 | 2004年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper discusses the exact and approximate calculation of the bit log-likelihood ratio (LLR) for a 16-QAM signal. In particular, we introduce a new modified max function, which allows for an effective implementation of the LLR formula. The results of the paper are applicable to 16-QAM soft-demapping in digital receivers that perform soft decision decoding or iterative decoding.

引用

页码：794 / 798

页数：5

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