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一种实现信源信道联合编译码的新方法
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作者 周辉 崔文惠 邵菲 《科技导报》 CAS CSCD 2007年第10期34-38,共5页
应用自适应的思想,由一个自定义的代价函数构造出一种适合于实现联合编译码的变长码——代价测评对称可逆变长码。论述了代价测评对称可逆变长码的构造原理与性能分析,并在两种常用的通信信道(BSC及AWGN信道)中进行了仿真试验。结果表明... 应用自适应的思想,由一个自定义的代价函数构造出一种适合于实现联合编译码的变长码——代价测评对称可逆变长码。论述了代价测评对称可逆变长码的构造原理与性能分析,并在两种常用的通信信道(BSC及AWGN信道)中进行了仿真试验。结果表明,这种新型编码方式的性能优于一般的分离编译码方案,具有一定的使用价值。 展开更多
关键词 对称可逆变长码 信源信道联合编译码 最大似然译码
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On constructing symmetrical reversible variable-length codes independent of the Huffman code
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作者 HUO Jun-yan CHANG Yi-lin MA Lin-hua LUO Zhong 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2006年第z1期59-62,共4页
Reversible variable length codes (RVLCs) have received much attention due to their excellent error resilient capabilities. In this paper, a novel construction algorithm for symmetrical RVLC is proposed which is indepe... Reversible variable length codes (RVLCs) have received much attention due to their excellent error resilient capabilities. In this paper, a novel construction algorithm for symmetrical RVLC is proposed which is independent of the Huffman code. The proposed algorithm's codeword assignment is only based on symbol occurrence probability. It has many advantages over symmetrical construction algorithms available for easy realization and better code performance. In addition, the proposed algorithm simplifies the codeword selection mechanism dramatically. 展开更多
关键词 Error resilience Average code length HUFFMAN codes symmetrical reversible variable length codes (RVLCs)
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