| LDPC码在OFDM通信系统中的应用与仿真 |
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| 引用本文： | 张凯,马奔,梁钊.LDPC码在OFDM通信系统中的应用与仿真[J].五邑大学学报(自然科学版),2007,21(3):23-27,44. |
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| 作者姓名： | 张凯 马奔 梁钊 |
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| 作者单位： | 五邑大学,信息学院,广东,江门,529020 |
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| 基金项目： | 广东省自然科学基金;广东省江门市科技计划 |
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| 摘 要： | 介绍了正交频分复用(OFDM)基带传输系统及其模型,概述了LDPC的编译码方法,研究了其在OFDM系统中的性能,并与卷积码进行了比较.仿真表明,LDPC码在OFDM基带传输系统中具有更好的纠错能力.
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| 关 键 词： | 正交频分复用 循环前缀 低密度奇偶校验码 二部图 和-积算法 |
| 文章编号： | 1006-7302（2007）03-0023-05 |
| 收稿时间： | 2006-12-18 |
| 修稿时间： | 2006-12-18 |
The Application and Simulation of LDPC Code in the OFDM System |
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| ZHANG Kai,MA Ben,LIANG Zhao.The Application and Simulation of LDPC Code in the OFDM System[J].Journal of Wuyi University(Natural Science Edition),2007,21(3):23-27,44. |
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| Authors: | ZHANG Kai MA Ben LIANG Zhao |
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| Institution: | School of Information, Wuyi University, Jiangmen 529020, China |
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| Abstract: | In this paper an OFDM based transmission system and its model are introduced;the encoding/decoding methods of LDPC code are described.The performance of the OFDM system based on LDPC code is further studied and compared with that of another OFDM system using the convolutional code.Simulation results show that the former has much stronger error correcting capability than the latter. |
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| Keywords: | OFDM cyclic prefix LDPC code Tanner graph sum-product algorithm |
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