Adaptive beam forming for time-variant channels with a multi-beam antenna

中国邮电高校学报(英文) ›› 2008, Vol. 15 ›› Issue (3): 37-40.doi:

Adaptive beam forming for time-variant channels with a multi-beam antenna

蒋泽梅媛媛阮巍

College of Electronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

收稿日期:2007-10-21 修回日期:1900-01-01 出版日期:2008-09-30
通讯作者: 蒋泽

Adaptive beam forming for time-variant channels with a multi-beam antenna

JIANG Ze, MEI Yuan-yuan, RUAN Wei

College of Electronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received:2007-10-21 Revised:1900-01-01 Online:2008-09-30

摘要/Abstract

摘要：

A multi-beam adaptive antenna is investigated by considering the adaptive beam forming performance for time-variant channels on the focus of mobile to base station or reverse link. This antenna is constructed by Fresnel zone phase-correcting plane (FZP) focusing element and uniformly spaced feeds array. An estimator for the beamforming weight vector in the presence of angle spreads is derived using a code filtering approach. Owing to the time-varying nature of the channels, a recursive method for computing and tracking the above optimal weight vector solution that is easy to implement is applied. The effects of angle spread, maximum Doppler frequency, and forgetting factor are studied. Simulation results showed that this type of adaptive antenna is capable of performing adaptive beam forming for time-variant channels effectively.

关键词:

adaptive;antenna,;adaptive;beam;forming,;FZP,;mismatch;loss

Abstract:

Key words:

adaptive antenna;adaptive beam forming;FZP;mismatch loss

JIANG Ze, MEI Yuan-yuan, RUAN Wei

. Adaptive beam forming for time-variant channels with a multi-beam antenna[J]. Acta Metallurgica Sinica(English letters), 2008, 15(3): 37-40.

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Adaptive beam forming for time-variant channels with a multi-beam antenna

Adaptive beam forming for time-variant channels with a multi-beam antenna

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