OFDM channel estimation with dispersive fading channels

被引：0

作者：

Wang, Dong-Yu ^{[1
]}

Duan, Tao ^{[2
]}

Zhang, Yong-Jian ^{[3
]}

机构：

[1] Department of Electronic Engineering, North China University of Technology

[2] Northern Institute of Electronic Equipment of China

[3] Department of Information Science and Technology, University of International Relations

来源：

Journal of China Universities of Posts and Telecommunications | 2012年 / 19卷 / SUPPL. 1期

基金：

中国国家自然科学基金;

关键词：

channel estimation; OFDM; pilot symbol; time-varying frequency-selective channel;

D O I：

10.1016/S1005-8885(11)60465-2

中图分类号：

学科分类号：

摘要：

In this paper, we studied the channel estimation problem for the orthogonal frequency division multiplexing (OFDM) system when the statistics of the multi-path fading channel is not known or partial known. A channel estimation approach based on polynomial approximation of the channel response is proposed. The pilot symbols are periodically inserted the channel responses for entire OFDM data sequence for exploiting channel correlation in both time and frequency domain, which is obtained from a time-variant frequency-selective Rayleigh fading channel model. Simulation shows that the method is robust to different channel statistics. Moreover, a window dimension adaptation algorithm is proposed to adapt the channel estimator to the channel statistics which further improves the robustness of the system. © 2012 The Journal of China Universities of Posts and Telecommunications.

引用

页码：75 / 78

页数：3

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