双选择性信道条件下MIMO-OFDM系统中的ICI抑制及频域Turbo均衡  

ICI suppression and frequency-domain Turbo equalization for MIMO-OFDM systems over doubly-selective channels

作　　者：杨炜伟[1] 蔡跃明 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《通信学报》2007年第4期24-31,共8页Journal on Communications

基　　金：东南大学移动通信国家重点实验室开放研究基金资助项目(N200601);江苏省自然科学基金资助项目(BK2006002)~~

摘　　要：分析了双选择性信道条件下MIMO-OFDM系统的ICI产生原理,提出了一种以最大化缩短信干噪比(MSSINR,maximum shortening the signal to inter-carrier interference plus noise ratio)为目标的频域ICI抑制算法及其简化算法;在此基础上将Turbo均衡技术应用到MIMO-OFDM系统中,提出了一种基于MSSINR频域ICI抑制的频域Turbo均衡(FTE,frequency-domain Turbo equalization)算法,并进行了数值仿真和比较分析。Based on the analysis of the ICI generation mechanism for MIMO-OFDM systems over doubly-selective channels, a novel frequency-domain ICI suppression scheme and its reduced complexity scheme were proposed, aiming to maximum shortening the signal to inter-carrier interference plus noise ratio （MSSINR）. Additionally, the Turbo equalization to MIMO-OFDM systems was applied over doubly-selective channels, and a new frequency-domain Turbo equalization （FTE） scheme was proposed based on frequency-domain ICI suppression. Numerical results were also presented to compare the performance among different schemes.

关 键 词：正交频分复用 多输入多输出 载间干扰抑制 频域Turbo均衡 

分 类 号：TN911.5[电子电信—通信与信息系统]