| 一种维特比译码器的矩阵实现方案 |
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| 引用本文： | 彭万权,伍小兵,张承畅,张丽.一种维特比译码器的矩阵实现方案[J].电路与系统学报,2012,17(3):115-120. |
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| 作者姓名： | 彭万权 伍小兵 张承畅 张丽 |
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| 作者单位： | 1. 重庆工程职业技术学院,重庆,400037
2. 重庆大学通信工程学院,重庆,400044 |
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| 摘 要： | 本文针对(2,1,l)卷积码提出一种维特比矩阵译码算法,通过引入整形、合并和动态选择等辅助模块,实现了所有环节的矩阵处理,构建出具有单一结构的并行译码器。由于只需要更改一部分模块的内部参数便可获得不同卷积码译码器,因此非常有利于分析和设计。仿真实验表明,在运算量更少的情况下,矩阵译码器可以取得接近最优的译码性能。
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| 关 键 词： | 卷积码 状态转移 维特比译码算法 矩阵化 |
A matrix implementation scheme of Viterbi decoder |
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| PENG Wan-quan
,
WU Xiao-bing
,
ZHANG Cheng-chang
,
ZNANH Li.A matrix implementation scheme of Viterbi decoder[J].Journal of Circuits and Systems,2012,17(3):115-120. |
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| Authors: | PENG Wan-quan WU Xiao-bing ZHANG Cheng-chang ZNANH Li |
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| Institution: | PENG Wan-quan1,WU Xiao-bing1,ZHANG Cheng-chang2,ZNANH Li1(1.Chongqing Vocational Institute of Engineering,Chongqing 400037,China; 2.College of Communication Engineering of Chongqing University,Chongqing 400044,China) |
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| Abstract: | This paper proposes a Viterbi matrix decoding algorithm to the(2,1,l) convolutional codes.Some auxiliary modules,such as reshaping,merging and variable selection,are brought to realize the matrixing processing in all aspects of decoder,and make a parallel decoder with single structure.All kinds of convolutional decoders can be obtained by changing the internal parameter of some modules,so it is very favorable to build and design.Simulation results demonstrate that the matrix decoder can achieve near-optimum performance under the less computation. |
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| Keywords: | convolutional codes state transition Viterbi decoding algorithm matrixing |
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