一种基于分数阶傅立叶变换的时变信道参数估计方法

被引：18

作者：

陈恩庆

陶然

张卫强

机构：

[1] 北京理工大学电子工程系

来源：

电子学报 | 2005年 / 12期

关键词：

线性调频信号; 信道参数估计; 分数阶傅立叶变换;

D O I：

暂无

中图分类号：

TN92 [无线通信];

学科分类号：

080402 ; 080904 ; 0810 ; 081001 ;

摘要：

时变衰落信道环境对准确的信道估计提出了巨大挑战.本文提出了一种基于分数阶傅立叶变换的时变信道参数估计方法.该方法根据信道参数模型,通过发射多分量线性调频信号探测信道,在接收端应用分数阶傅立叶变换对接收信号进行参数估计,从而获得时变信道参数.分析和数值仿真结果表明,这一方法具有较高的估计精度,并且计算简单.

引用

页码：2101 / 2104

页数：4

共 12 条

[1]

Signal Processing Advances in Wirelessand Mobile Communications-Trends in Single-and Multi-UserSystems. G B Giannakis,et al. . 2001

[2]

Channel estimation for OFDM with fastfading channels by modified Kalman filter. Ki-Young Han,et al. IEEE Trans . 2004

[3]

Digital computation of the fractionalFourier transform. H M Ozaktas,et al. IEEE Trans . 1996

[4]

The fractional order Fourier transform and its ap-plication to quantum mechanics. V Namias. Journal of Applied Mathematics . 1980

[5]

The fractional Fourier transform and time-frequency representations. L B Almeida. IEEE Trans . 1994

[6]

Blind equalization of digital communicationchannels using higher-order statistics. B Porat,et al. IEEE Trans . 1991

[7]

Characterization of randomly time-variant linearchannels. P A Bello. IEEE Trans . 1963

[8]

Subspace methods for the blind identifica-tion of multichannel FIR filters. E Moulines,et al. IEEE Trans . 1995

[9]

The Cramer-Rao lower bounds for signalswith constant amplitude and polynomial phase. S Peleg,B Porat. IEEETrans . 1991

[10]

Detection of bandlimited signals over fre-quency selective Rayleigh fading channels. Q Dai,E Shwedyk. IEEE Trans . 1994

← 1 2 →