| 基于PWHT的删除卷积码识别方法 |
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| 引用本文： | 王磊,胡以华,王勇,戚林.基于PWHT的删除卷积码识别方法[J].计算机工程与应用,2012,48(16):140-144. |
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| 作者姓名： | 王磊 胡以华 王勇 戚林 |
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| 作者单位： | 1.脉冲功率激光技术国家重点实验室（电子工程学院），合肥 230037
2.解放军电子工程学院 506室，合肥 230037
3.安徽省电子制约技术重点实验室，合肥 230037 |
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| 基金项目： | 国家自然科学基金(No.60902017);安徽省自然科学基金(No.10040606Q60) |
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| 摘 要： | 介绍了删除卷积码的定义，根据删除卷积码与源卷积码之间的关系，构建了删除卷积码识别的数学模型，针对Walsh-Hadamard变换在删除卷积码校验矩阵识别中存在运算量和数据量过大的问题，对校验矩阵方程组进行了变形，提出部分Walsh-Hadamard变换（PWHT），有效地识别出校验矩阵，并在此基础上识别源码的生成矩阵和删除模式，进行仿真实验。结果表明在误码率为0.03的情况下，识别概率达到99.8%以上。
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| 关 键 词： | 删除卷积码 校验矩阵 生成矩阵 部分Walsh-Hadamard变换 识别 |
Method for recognizing punctured convolutional codes based on PWHT |
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| WANG Lei
,
HU Yihua
,
WANG Yong
,
QI Lin.Method for recognizing punctured convolutional codes based on PWHT[J].Computer Engineering and Applications,2012,48(16):140-144. |
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| Authors: | WANG Lei HU Yihua WANG Yong QI Lin |
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| Affiliation: | 1.State Key Laboratory of Pulsed Power Laser Technology（Electronic Engineering Institute）, Hefei 230037, China
2.Electronic Engineering Institute of PLA, Hefei 230037, China
3.Key Laboratory of Electronic Restriction, Anhui Province, Hefei 230037, China |
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| Abstract: | The definition of punctured convolutional codes is introduced. And the math model of recognizing is built. Walsh-Hadamard transform is used in recognizing parity-check matrix of convolutional codes with error code-element. Aim at the problem of large operation and data quantity, the equation is transmuted and Part Walsh-Hadamard Transform(PWHT)is established. The parity-check matrix can be recognized by this method effectively. The generator matrix and puncture map of the source convolutional codes are also solved based on the parity-check matrix. The simulation experiment is done and the results show that recognizing correctly rate is more than 99.8% when BER is 0.03. |
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| Keywords: | punctured convolutional codes parity-check matrix generator matrix Part Walsh-Hadamard Transform(PWHT) recognization |
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