| 基于联合优化技术的信源信道联合编码新策略 |
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| 引用本文： | 谢亮.基于联合优化技术的信源信道联合编码新策略[J].小型微型计算机系统,2006,27(8):1588-1591. |
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| 作者姓名： | 谢亮 |
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| 作者单位： | 武汉大学,电子科学与技术系,湖北,武汉,430072 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 针对多媒体无线通信的特点，提出了结合了自适应纠错技术与联合优化技术所提出的一种新策略．充分考虑了联合编码的自适应纠错特性和联合优化特性，在联合优化特性下分析了优化的信源编码算法和优化的信道编码算法．实验仿真的结果表明，该方法能够使图像数据在高码率下达到较好的抗噪性能．
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| 关 键 词： | 级联码 LDPC码 SPIHT算法 信源与信道联合编码 |
| 文章编号： | 1000-1220（2006）08-1588-04 |
| 收稿时间： | 05 26 2005 12:00AM |
| 修稿时间： | 2005-05-26 |
New Joint Source Channel Coding Strategy Based on Joint Optimized Technology |
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| XIE Liang.New Joint Source Channel Coding Strategy Based on Joint Optimized Technology[J].Mini-micro Systems,2006,27(8):1588-1591. |
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| Authors: | XIE Liang |
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| Affiliation: | Department of Electronic Science, Wuhan University, Wuhan 430072, China |
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| Abstract: | Presenting a joint source-channel coding scheme based on SPIHT (Set partitioning in Hierarchical trees) algorithm and LDPC(Lower Density Parity Check) codes.Taking full advantage of the characteristics of SPIHT algorithm and LDPC Codes.Adopting scheme of UEP (unequal error protection) in channel coding based on compressed data according to the importance for reconstruction.The results show that the proposed scheme can make a better balance between bit error rate and code rate. |
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| Keywords: | concatenating code LDPC codes SPIHT algorithm joint source-channel coding |
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