| TMS320C25实现的可变码率软半决Viterbi译码器 |
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| 引用本文： | 陈西宏,梁传甲,王新梅.TMS320C25实现的可变码率软半决Viterbi译码器[J].西安电子科技大学学报,1993(2). |
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| 作者姓名： | 陈西宏 梁传甲 王新梅 |
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| 作者单位： | 西安电子科技大学信息工程系，西安电子科技大学信息工程系，西安电子科技大学信息工程系 |
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| 摘 要： | 该文介绍一种用高速数字信号处理器TMS320C25实现的码率由R=1/2变为R=3/4的可变码率软判决Viterbi译码器,该译码器的码型选为约束长度K=7的标准(2,1,6)卷积码,其硬件很简单,系统成本低,信息译码速率达7kb/s;对其软件稍加修改,便可得到其它高码率的可变码率软判决Viterbi译码器。
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| 关 键 词： | 删余卷积码 Viterbi译码 软判决译码 |
A variable--rate soft--decision Viterbi decoder implemented with TMS320C25 |
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| Cheng Xihong,Liang Chuanjia,Wang Xinmei.A variable--rate soft--decision Viterbi decoder implemented with TMS320C25[J].Journal of Xidian University,1993(2). |
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| Authors: | Cheng Xihong Liang Chuanjia Wang Xinmei |
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| Affiliation: | Cheng Xihong;Liang Chuanjia;Wang Xinmei |
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| Abstract: | A variable--rate soft--decision Viterbi decoder for standard (2, 1, 6) convolutional code of constraint length K=7 implemented with high speed DSP TMS320C25 is presented. It is characterized by simple hardware and low system cost. Its rate can be changed from R=1/2 to R=3/4 and its information decoding speed reaches 7kb/s. By changing the software a little, other high rate variable--rate soft--decision Viterbi decoders can also be obtained. |
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| Keywords: | Punctured convolutional code Viterbi decoding soft-decision decoding |
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