Turbo均衡在Non-CP SC-FDE系统中的应用  

Application of Turbo equalization in Non-CP SC-FDE system

作　　者：吴世奇[1] 

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《现代电子技术》2013年第23期23-25,29,共4页Modern Electronics Technique

摘　　要：针对无循环前缀的单载波频域均衡(Non-CP SC-FDE)系统中的符号间干扰(ISI),提出了一种Turbo均衡与循环重构联合迭代算法。通过循环重构技术消除ISI,并采用频域均衡频域判决反馈(FDE-FDDF)方式,将Turbo均衡算法与循环重构算法结合在一起进行迭代。仿真结果表明,Non-CP SC-FDE系统使用该算法能实现与传统有CP系统近似的误码性能,在大幅提高传输效率的同时能够有效消除多径干扰。A joint iterative algorithm of Turbo equalization and cyclic reconstruction is proposed to avoid Inter-Symbol Inter- ference （ISI） in single carrier frequency-domain equalization （SC-FDE） system without cyclic prefix （CP）. The algorithm can- cels ISI by using cyclic reconstruction technology, and puts the Turbo equalization iterative algorithm and cyclic reconstruction iterative algorithm together by frequency-domain equalization frequency-domain decision feedback （FDE-FDDF） scheme. The simulation results show that Non-CP SC-FDE system has approximative bit error rate performance with traditional CP system, and it can raise transmission efficiency evidently and eliminate multipath interference in the meantime.

关 键 词：联合迭代算法 TURBO均衡 单载波频域均衡 符号间干扰 循环重构 

分 类 号：TN911.534[电子电信—通信与信息系统]