| 基于WiMax的LDPC码性能研究 |
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| 引用本文： | 胡潘,李珊珊,赵宏宇.基于WiMax的LDPC码性能研究[J].通信技术,2011,44(4):28-30. |
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| 作者姓名： | 胡潘 李珊珊 赵宏宇 |
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| 作者单位： | 西南交通大学信息编码与传输四川省重点实验室,四川成都,610031 |
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| 摘 要： | WiMax（全球微波互联接入）是一种基于IEEE 802.16标准的无线宽带接入城域网技术,它能提供面向互联网的高速连接,数据传输距离达50 km,具有QoS保障、传输速率高、业务丰富多样等优点。WiMax在信道编码方式中增加了LDPC（低密度奇偶校验）码。文中对WiMax中LDPC编码算法和译码算法进行了深入研究,用C语言实现了多种码长和码率的LDPC编译码仿真,其中编码采用IEEE 802.16e-2005提供的方法,译码采用BP（置信传播）译码算法。仿真结果显示WiMax的LDPC码具有优异的编译码性能。
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| 关 键 词： | 全球微波互联接入 低密度奇偶校验 递归编码 BP译码算法 |
Performance Analysis of LDPC Code based on WiMax |
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| HU Pan,LI Shan-shan,ZHAO Hong-yu.Performance Analysis of LDPC Code based on WiMax[J].Communications Technology,2011,44(4):28-30. |
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| Authors: | HU Pan LI Shan-shan ZHAO Hong-yu |
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| Affiliation: | HU Pan,LI Shan-shan,ZHAO Hong-yu(Provincial Key Lab of Information Coding and Transmission,Southwest Jiaotong University,Chengdu Sichuan 610031,China) |
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| Abstract: | Worldwide Interoperability for Microwave Access(WiMax) is a technology based on the IEEE 802.16 standard for broadband wireless access of metropolitan area networks.WiMax can provide high-speed connection to the Internet as well as long-distance data transmission up to 50 km,and has advantages including QoS guarantees,high transmission rate and various applications.WiMax adds Low-Density Parity-Check(LDPC) codes to the channel coding.This paper focuses on the LDPC code used in WiMax,and the C language progr... |
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| Keywords: | WiMax LDPC recursive encoding BP algorithm |
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