基于软件无线电的改进级联码验证实现

doi:10.3969/j.issn.0255-8297.2017.02.002

应用科学学报 ›› 2017, Vol. 35 ›› Issue (2): 149-159.doi: 10.3969/j.issn.0255-8297.2017.02.002

基于软件无线电的改进级联码验证实现

高树立, 陈为刚, 杨晋生

天津大学电子信息工程学院, 天津 300072

收稿日期:2016-09-14 修回日期:2016-10-24 出版日期:2017-03-30 发布日期:2017-03-30
通信作者: 陈为刚,副教授,研究方向:无线通信理论与系统、信息理论与编码技术,E-mail:chenwg@tju.edu.cn E-mail:chenwg@tju.edu.cn
基金资助:
国家自然科学基金（No.61671324）；天津市科技兴海项目基金（No.KJXH2011-2）资助

Implementation and Verification of Improved Concatenated Code Based on Software-Defined Radio

GAO Shu-li, CHEN Wei-gang, YANG Jin-sheng

School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China

Received:2016-09-14 Revised:2016-10-24 Online:2017-03-30 Published:2017-03-30

摘要/Abstract

摘要：

基于通用软件无线电外设（universal software radio peripheral，USRP）构成的软件无线电平台，在与欧洲地面数字电视广播（digital video broadcasting-terrestrial，DVB-T）参数兼容的情况下，设计了基于里德-所罗门（Reed-Solomon，RS）码与低密度奇偶校验（lowdensity parity-check，LDPC）码的级联码，并与DVB-T中基于RS码与卷积码的级联码进行了对比.LDPC码的纠错性能优于卷积码，与RS码结合可以进一步消除LDPC码在高信噪比情况下出现的误码平台，获得优越的纠错性能.基于USRP平台实现了所设计级联码中的各个模块，并在实际无线信道下验证了该级联码的纠错性能.系统测试结果表明，与DVB-T中的级联码相比，所设计的级联码在无线信道下可以获得一定的增益.

关键词: 级联码, 软件无线电, 低密度奇偶校验码, 卷积码

Abstract:

A concatenated code combining an low-density parity-check (LDPC) code with a Reed-Solomon (RS) code, is designed based on the software-defined radio platform formed by universal software radio peripheral (USRP), which has compatible parameters with digital video broadcasting-terrestrial (DVB-T). Compared with the concatenated code combining a convolutional code with an RS code in DVB-T, the designed concatenated code obtains excellent error-correction performance, since LDPC performs better than the convolutional code, and the RS code can further eliminate error floor of the LDPC code. The designed code is implemented on a USRP platform. Its performance is tested in a wireless channel. The results show that high performance gain can be achieved by using the designed concatenated code as compared with the concatenated code in DVB-T.

Key words: concatenated code, convolutional code, software-defined radio, low-density parity-check (LDPC) code

中图分类号:

TN911

高树立, 陈为刚, 杨晋生. 基于软件无线电的改进级联码验证实现[J]. 应用科学学报, 2017, 35(2): 149-159.

GAO Shu-li, CHEN Wei-gang, YANG Jin-sheng. Implementation and Verification of Improved Concatenated Code Based on Software-Defined Radio[J]. Journal of Applied Sciences, 2017, 35(2): 149-159.

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基于软件无线电的改进级联码验证实现

Implementation and Verification of Improved Concatenated Code Based on Software-Defined Radio

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