| 基于迭代结构和MS估计的信源信道联合解码 |
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| 引用本文： | 周琳,吴镇扬.基于迭代结构和MS估计的信源信道联合解码[J].应用科学学报,2005,23(5):457-460. |
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| 作者姓名： | 周琳 吴镇扬 |
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| 作者单位： | 东南大学,无线电工程系,江苏,南京,210096 |
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| 摘 要： | 利用信源参数的非等概分布和时间相关性,以及软输入软输出信道解码提供的接收参数似然信息,提出了基于递归结构的联合信源信道解码算法.该算法由基于MS估计的软输入信源解码和基于迭代结构的维特比信道解码两部分组成.仿真实验表明对于具有时间相关性的高斯信源和加性高斯白噪声信道,与信源信道独立解码相比,联合算法得到的参数信噪比提高了近10dB,有效提高了接收系统性能.
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| 关 键 词： | 递归结构 联合信源信道解码 MS估计 软输入信源解码 迭代结构 |
| 文章编号： | 0255-8297（2005）05-0457-04 |
| 收稿时间： | 2004-05-30 |
| 修稿时间： | 2004-05-302004-08-27 |
Joint Source-Channel Decoding Based on Iterative Structure and MS Estimation |
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| ZHOU Lin,WU Zhen-yang.Joint Source-Channel Decoding Based on Iterative Structure and MS Estimation[J].Journal of Applied Sciences,2005,23(5):457-460. |
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| Authors: | ZHOU Lin WU Zhen-yang |
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| Abstract: | Using the non-uniform distribution and time domain correlation of source-encoded parameter and the soft-value provided by SISO channel decoder, a recursive joint source-channel decoding algorithm is proposed. The algorithm is composed of soft-bit source decoding based on MS estimation and Viterbi decoder based on iterative structure. Compared with separate source channel decoding, the joint algorithm has a gain in the parameter SNR of about 10 dB for colored Gaussian source and AWGN channel. |
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| Keywords: | recursive structure joint source-channel decoding MS estimation soft-bit source decoding iterative structure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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