| OFDM系统下LDPC码的性能仿真 |
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| 引用本文： | 陈艳,赵旦峰,高敬鹏.OFDM系统下LDPC码的性能仿真[J].舰船电子对抗,2007,30(4):96-98. |
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| 作者姓名： | 陈艳 赵旦峰 高敬鹏 |
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| 作者单位： | 哈尔滨工程大学,哈尔滨,150001 |
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| 摘 要： | 通过对LDPC码在不同调制方式下译码算法的分析，把高阶调制下的和积译码算法应用于LDPC—OFDM系统，系统中LDPC码采用目前性能最优的PEG随机构造生成，并与Turbo—OFDM系统进行比较，仿真结果表明短码长LDPC码在高码率高信噪比的情况下性能优于Turbo码。
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| 关 键 词： | LDPC码 和积译码算法 正交频率差异多路 |
| 文章编号： | CN32-1413（2007）04-0096-03 |
| 修稿时间： | 2006-12-20 |
Performance Simulation of LDPC Codes under OFDM System |
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| CHEN Yan,ZHAO Dan-feng,GAO Jing-peng.Performance Simulation of LDPC Codes under OFDM System[J].Shipboard Electronic Countermeasure,2007,30(4):96-98. |
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| Authors: | CHEN Yan ZHAO Dan-feng GAO Jing-peng |
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| Affiliation: | Harbin Engineering University College of Information and Communication, Harbin 150001,China |
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| Abstract: | By means of the analysis of decoding algorithms in different modulations mode, this paper uses the sum product algorithm unsder high-order modulation to LDPC-OFDM system, in which LDPC code is brought out by the random construction of PEG,and is compared with the Turbo- OFDM system. Simulation result shows that the performance of short length LDPC code is better than Turbo code when the code rate and the SNR is high. |
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| Keywords: | LDPC code sum-product decoding algorithm orthogonal frequency-diversity multiplexing |
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