New semi-blind channel estimation for OFDM systems

Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (2): 155-156.

• 网络、通信与安全 • Previous Articles Next Articles

New semi-blind channel estimation for OFDM systems

WANG Lin,LI Yan-fen,YANG Ke

School of Automation and Information Engineering，Xi’an University of Technology，Xi’an 710048，China

Received:1900-01-01 Revised:1900-01-01 Online:2008-01-11 Published:2008-01-11
Contact: WANG Lin

针对OFDM系统的一种新的半盲信道估计方法

王林,李艳芬,杨柯

西安理工大学自动化与信息工程学院，西安 710048

通讯作者: 王林

Abstract

Abstract: This paper proposes a new subspace-based adaptive semi-blind channel estimation for zero padding ofdm systems.Employing the pilot information of ZP-OFDM systems，this algorithm gives accurate initial channel parameters.Then channel estimation is computed adaptively using iterative recursion and power method.Not only does this algorithm reduce computation complexity，but improves the blind channel estimation in convergence rate.Simulation results also show that the algorithm has better performance.

Key words: semi-blind channel estimation, subspace, OFDM

摘要： 针对填补零的OFDM（ZP-OFDM）系统，提出了一种新的基于子空间的自适应半盲信道估计算法。该算法利用ZP-OFDM系统导频信息，给出精确的信道参数初始值。然后通过一种新的子空间跟踪以及功率方法，进行自适应信道估计。该算法不仅降低了计算复杂度，而且改善了盲信道估计收敛速度慢的缺点，仿真结果也表明其具有较好的估计精度。

关键词: 半盲信道估计, 子空间, 正交频分复用

WANG Lin,LI Yan-fen,YANG Ke. New semi-blind channel estimation for OFDM systems[J]. Computer Engineering and Applications, 2008, 44(2): 155-156.

王林,李艳芬,杨柯. 针对OFDM系统的一种新的半盲信道估计方法[J]. 计算机工程与应用, 2008, 44(2): 155-156.

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New semi-blind channel estimation for OFDM systems

针对OFDM系统的一种新的半盲信道估计方法

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