Robust Doppler spread estimation in nonisotropic fading channels

被引：40
|
作者：
Baddour, KE [1 ]
Beaulieu, NC
机构：
[1] Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada
[2] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2005年 / 4卷 / 06期
基金：
加拿大自然科学与工程研究理事会;
关键词：
fading channels; maximum Doppler frequency; nonisotropic scattering; parameter estimation; Rician channels;
D O I：
10.1109/TWC.2005.858362
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new parametric approach is proposed for the estimation of the maximum Doppler frequency, or equivalently the mobile speed, in narrowband mobile radio channels. In this work, simple and efficient Doppler-frequency estimators are formulated based on using a small number of samples of the channel antocorrelation function. Unlike previous approaches, the chosen parameterization is shown to be robust in a microcellular propagation environment, which may be characterized by nonisotropic scattering and/or a specular component of unknown strength. Simulation results are described to illustrate the effects of additive noise and the finite data-record performance.
引用
收藏
页码：2677 / 2682
页数：6
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