电子学报2013，Vol.41Issue(2)：301-306,6.DOI:10.3969/j.issn.0372-2112.2013.02.015
一种利用软判决的信道编码识别新算法
A Novel Algorithm for Channel Coding Recognition Using Soft-Decision
摘要
Abstract
The existing methods for channel coding recognition usually use hard-decision of the demodulator output sequence, and their robustness against error bits is to be improved.Focusing on situations of low signal-to-noise ratio, this paper presents a novel recognition algorithm which uses soft-decision.The algorithm is based on the error-containing equation model, and it solves the equation, thus accomplishes the recognition, through regarding the probability that the equation holds right as the measurement of the performance of a solution vector. The use of log-likelihood ratio(LLR) algebra makes the algorithm greatly simplified. Results of simulation experiments show that the new algorithm improves recognition performance,especially in lower signal-to-noise ratio cases,compared to the existing algorithm based on Walsh-Hadamard transform.关键词
信道编码识别/软判决/低信噪比/对数似然比(LLR)/Walsh-Hadamard变换Key words
channel coding recognition/ soft-decision/low signal-to-noise ratio/log-likelihood ratio(LLR)/ Walsh-Hadamard transform分类
信息技术与安全科学引用本文复制引用
于沛东,李静,彭华..一种利用软判决的信道编码识别新算法[J].电子学报,2013,41(2):301-306,6.基金项目
国家自然科学基金(No.61072046) （No.61072046）
