Semi-Blind Channel Estimation Algorithm for OFDM Systems

被引：0
|
作者：
薛艳明
苏广川
机构：
[1] School of Information Science and Technology Beijing Institute of Technology Beijing 100081 China
[2] School of Information Science and Technology Beijing Institute of Technology Beijing 100081 China
来源：
Journal of Beijing Institute of Technology | 2006年 / 03期
关键词：
linear precoding; orthogonal frequency division multiplexing(OFDM); semi-blind channel estimation; subspace approach;
D O I：
10.15918/j.jbit1004-0579.2006.03.015
中图分类号：
TN919.3 [数据传输技术];
学科分类号：
0810 ; 081001 ;
摘要：
A semi-blind channel estimation algorithm based on subspace approach for orthogonal frequency division multiplexing(OFDM) systems over the frequency-selective channel is proposed. A linear precoding is applied on each block before the IFFT operation and a low-rank structure is created in the received signal. Then subspace properties can be exploited to identify the channel up to a scalar ambiguity. The residual scalar ambiguities eliminated by inserting pilots into data stream. Simulation results illustrate the performance of the proposed semi-blind algorithm.
引用
收藏
页码：320 / 322
页数：3
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