Turbo equalizer based on LDPC coded on GF（q） over frequency selective fading channels

doi:10.3778/j.issn.1002-8331.2009.13.041

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (13): 142-143.DOI: 10.3778/j.issn.1002-8331.2009.13.041

• 数据库、信号与信息处理 • Previous Articles Next Articles

Turbo equalizer based on LDPC coded on GF（q） over frequency selective fading channels

CAO Hai-yan¹,LI Jun²,LI Guang-qiu¹,ZHAO Ze-mao¹

1.College of Tele-Communication Engineering，Hangzhou Dianzi University，Hangzhou 310038，China
2.College of Information Engineering，China Jiliang University，Hangzhou 310038，China
3.School of Electronic & Information Engineering，South China University of Technology，Guangzhou 510640，China

Received:2008-12-08 Revised:2009-03-06 Online:2009-05-01 Published:2009-05-01
Contact: CAO Hai-yan

基于GF（q）的LDPC编码的Turbo均衡

曹海燕¹,李君²,李光球¹,赵泽茂¹

1.杭州电子科技大学通信工程学院，杭州 310038
2.中国计量学院信息工程学院，杭州 310038
3.华南理工大学电信学院，广州 510640

通讯作者: 曹海燕

Abstract

Abstract: A Turbo equalizer based on LDPC coded on GF（q） over frequency selective fading channels is proposed in this paper.In such a case，it can be view as a serially concatenated structure in which the q-LDPC coder is used as outer-code and the channel expanded serve as inner code.At the receiver，the iterative detection algorithm is presented.Simulation results show that the scheme yields tremendous improvement and outperforms the convolution coded Turbo equalizer 2 dB.

Key words: Low Density Parity Check Code（LDPC）, Turbo equalizer, iterative

摘要： 提出了频选衰落信道下基于GF（q）的LDPC编码系统的Turbo均衡，将性能优异的q-LDPC码作为外码，以信道响应作为内码构成级联结构，在接收端采用迭代的方式实现数据的高性能检测。相比卷积编码作为外码的Turbo均衡有2 dB的性能改善，提高了误码性能。

关键词: 低密度奇偶校验码, Turbo均衡, 迭代

CAO Hai-yan¹,LI Jun²,LI Guang-qiu¹,ZHAO Ze-mao¹. Turbo equalizer based on LDPC coded on GF（q） over frequency selective fading channels[J]. Computer Engineering and Applications, 2009, 45(13): 142-143.

曹海燕¹,李君²,李光球¹,赵泽茂¹. 基于GF（q）的LDPC编码的Turbo均衡[J]. 计算机工程与应用, 2009, 45(13): 142-143.

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Turbo equalizer based on LDPC coded on GF（q） over frequency selective fading channels

基于GF（q）的LDPC编码的Turbo均衡

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