OFDM系统中基于时域干扰自消除的载波间干扰抑制技术  

Inter-carrier interference cancellation technique based on time domain ICI self-cancellation for OFDM systems

作　　者：陈拿权[1,2] 张建华[2] 张平[2] 

机构地区：[1]中国电子科技集团电子科学研究院,北京100041 [2]北京邮电大学泛网无线通信教育部重点实验室,北京100876

出　　处：《吉林大学学报（工学版）》2009年第1期219-224,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金重大项目(60302025);'863'国家高技术研究发展计划项目(2006AA01Z283;2006AA01Z260)

摘　　要：为了降低信道时变造成的载波间干扰(ICI)对正交频分复用(OFDM)系统性能的影响,提出了基于时域干扰自消除(TDISC)的ICI抑制方案和基于导频辅助估计的次优合并TDISC算法。仿真与分析表明,该算法能有效对抗信道中的时变衰落,提高OFDM在高速移动环境中的系统性能。In order to reduce severe effects of inter-carrier interference(ICI) in Orthogonal Frequency Division Multiplexing(OFDM) system caused by time variance of the channel,the time domain ICI self-cancellation(TDISC) scheme and the pilot assisted sub-optimal combination TDISC algorithm were proposed.Through simulations and analysis,it was proved that the proposed algorithm can effectively combat the time variance of the channel and improve OFDM system performance in high speed mobile environment.

关 键 词：通信技术 载波间干扰 时域干扰自消除 正交频分复用 导频辅助估计 次优合并 

分 类 号：TN919.3[电子电信—通信与信息系统]