信道均衡在PlutoSDR上的实现  

Realization ofChannel Equalization on PlutoSDR

作　　者：张翠翠[1] 师振盛 李一[1] 张莹[1] 范建存[1] 张渭乐[1] ZHANG Cuicui;SHI Zhensheng;LI Yi;ZHANG Ying;FAN Jiancun;ZHANG Weile(School of Information and Communications Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学信息与通信工程学院,西安710049

出　　处：《实验室研究与探索》2022年第7期6-10,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(61671367);西安交通大学本科实验实践与创新创业教育教学改革研究专项(21SJZX14)。

摘　　要：针对软件无线电技术作为当今通信系统和通信技术的发展趋势,在一款便携的零中频软件无线电平台PlutoSDR上开展的信道均衡研究,使得将贴合实际的通信系统引入实验教学成为可能。以无线通信中的信道均衡为研究内容,基于PlutoSDR软件无线电平台完成了LMS均衡算法和MMA均衡算法的具体实现;在2台PlutoSDR搭建的无线通信收发系统中对2种均衡算法做了验证和性能分析,通过星座图直观体现了信道均衡对减小码间串扰的有效性,误差向量幅度和误码率减小进一步表明了信道均衡有效提高了系统的传输可靠性。将通信中的关键技术在PlutoSDR搭建的复杂通信系统中实现和应用,对于通信原理实验教学有重要意义。Softwaredefinedradio is the development trend of communication systems and communication technology.As a portable zero-IF software radio platform,PlutoSDR makes it possible to introduce a practical communication system into experimental teaching.The realization and application of the key communicationtechnologies on the complex communication system built by PlutoSDR is of great significance for the experimental teaching of communication principles.Taking the channel equalization in wireless communication as the research content,we completed the realization of the LMS and the MMA equalization algorithm based on the PlutoSDR software defined radio platform;we built a wireless communication transceiver system with two PlutoSDRs,and verified and analysed the performance of the two equalization algorithms in the system,The constellation diagram intuitively reflects the effectiveness of equalization in reducing inter-symbol interference,and the error vector magnitude and bit error rate further show that equalization effectively improves the reliability of the system.

关 键 词：软件无线电 信道均衡 PlutoSDR 最小均方算法 多模算法 码间串扰 

分 类 号：O45[理学—无线电物理]