| 一种基于预处理的OFDM低复杂度频域线性均衡算法 |
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| 引用本文： | 何晨,徐行辉,陈勇,蒋铃鸽.一种基于预处理的OFDM低复杂度频域线性均衡算法[J].电子学报,2011,39(7):1481-1485. |
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| 作者姓名： | 何晨 徐行辉 陈勇 蒋铃鸽 |
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| 作者单位： | 上海交通大学电子工程系,上海 200240 |
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| 基金项目： | 国家863高技术研究发展计划基金(No.2009AA011505); 国家自然科学基金(No.60772100,No.60832009,No.60872017) |
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| 摘 要： | 针对高频段OFDM无线传输系统中严重的载波间干扰（Inter-Carrier Interference,ICI）,提出了一种基于预处理的低复杂度频域线性均衡算法.在接收端先对各时刻的信道响应提取时变因子,进行一维时域滤波预处理；再用带状结构去近似提取时变因子后信道的频域矩阵,进行频域线性均衡.仿真结果表明,相对于MMS...
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| 关 键 词： | 正交频分复用 载波间干扰 线性时变信道 频域线性均衡 预处理 |
| 收稿时间： | 2010-08-30 |
A Low Complexity Frequency-Domain Linear Equalization Algorithm Based on Pre-processing in OFDM System |
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| HE Chen,XU Xing-hui,CHEN Yong,JIANG Ling-ge.A Low Complexity Frequency-Domain Linear Equalization Algorithm Based on Pre-processing in OFDM System[J].Acta Electronica Sinica,2011,39(7):1481-1485. |
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| Authors: | HE Chen XU Xing-hui CHEN Yong JIANG Ling-ge |
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| Affiliation: | Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China |
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| Abstract: | Considering the serious Inter-Carrier Interference(ICI) in Orthogonal Frequency Division Multiplexing(OFDM) wireless systems with high frequency,a low complexity frequency-domain linear equalization algorithm based on pre-processing is proposed.The new algorithm first extracts a time-variant factor from every channel response.Consequently,one-dimensional filtering pre-processing in time-domain can be achieved at the receiver.As for the time-variant channel after time-variant factor extraction,Banded structu... |
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| Keywords: | OFDM ICI Linear Time-Variant(LTV) Channel Frequency-domain Linear Equalization(FDLE) Pre-processing |
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