多径环境下自适应天线的统计行为与性能

Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI:10.1109/RAWCON.1998.709178

T. Pham

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引用次数: 9

摘要

自适应天线在多径和非多径环境下的表现非常不同。本文通过研究入射到天线阵列上的信号空间特征的统计变化，研究了自适应天线在多径瑞利衰落中的行为。提出了一种分析自适应天线多径性能的方法。结果表明，随着入射信号角度的增大和天线单元间距的增大，天线性能对入射信号到达角(AOA)的依赖性变小。一般来说，增加元件间距可以提高天线性能，因为衰减抑制更有效，并且即使期望信号和干扰信号的平均aoa重合也可以抑制干扰。

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Statistical behavior and performance of adaptive antennas in multipath environments

Adaptive antennas can behave very differently in multipath and non-multipath environments. In this paper we study the behavior of adaptive antennas in multipath Rayleigh fading by investigating the statistical variation of the spatial signature of a signal incident upon an antenna array. A method for analyzing the multipath performance of adaptive antennas is presented. It can be shown that the antenna performance becomes less dependent on the angles of arrival (AOA) of the incident signals as their angular spreads and antenna element spacing increase. In general, antenna performance improves for increasing element spacing because fading reduction is more effective and interference suppression is possible even when the mean AOAs of desired and interfering signals coincide.

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来源期刊

Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)

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