| 双选择性信道条件下MIMO-OFDM系统中的ICI抑制及频域Turbo均衡 |
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| 引用本文： | 杨炜伟,蔡跃明. 双选择性信道条件下MIMO-OFDM系统中的ICI抑制及频域Turbo均衡[J]. 通信学报, 2007, 28(4): 24-31 |
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| 作者姓名： | 杨炜伟 蔡跃明 |
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| 作者单位： | 1. 解放军理工大学,通信工程学院,江苏,南京,210007
2. 解放军理工大学,通信工程学院,江苏,南京,210007;东南大学,移动通信国家重点实验室,江苏,南京,210096 |
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| 基金项目： | 国家重点实验室基金;江苏省自然科学基金 |
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| 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。
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| 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 |
| 文章编号： | 1000-436X（2007）04-0024-08 |
| 修稿时间： | 2005-07-28 |
ICI suppression and frequency-domain Turbo equalization for MIMO-OFDM systems over doubly-selective channels |
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| YANG Wei-wei,CAI Yue-ming. ICI suppression and frequency-domain Turbo equalization for MIMO-OFDM systems over doubly-selective channels[J]. Journal on Communications, 2007, 28(4): 24-31 |
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| Authors: | YANG Wei-wei CAI Yue-ming |
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| Affiliation: | 1. Institute of Communications Engineering of PLAUST, Nanjing 210007, China; 2. Nation Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China |
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| Abstract: | Based on the analysis of the ICI generation mechanism for MIMO-OFDM systems over doubly-selective chan-nels,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 equali-zation 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 pre-sented to compare the performance among different schemes. |
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| Keywords: | OFDM MIMO inter-carrier interference suppression frequency-domain Turbo equalization |
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