Mean effective gain of antennas in a wireless channel

被引：86

作者：

Glazunov, A. Alayon ^{[1
]}

Molisch, A. F. ^{[1
,2
]}

Tufvesson, F. ^{[1
]}

机构：

[1] Lund Univ, Elect & Informat Technol Dept, SE-22100 Lund, Sweden

[2] Mitsubishi Elect Res Labs, Cambridge, MA 02139 USA

来源：

IET MICROWAVES ANTENNAS & PROPAGATION | 2009年 / 3卷 / 02期

关键词：

RADIATION EFFICIENCY; DIVERSITY GAIN; PERFORMANCE; ENVIRONMENT; SHOULDER; CAPACITY; ARRAY; HAND;

D O I：

10.1049/iet-map:20080041

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：

The mean effective gain (MEG) is one of the most important parameters for the characterisation of antennas in wireless channels. An analysis of some fundamental properties of the MEG is provided and corresponding physical interpretations are given. Three points are analysed in detail: (i) closed-form expressions for MEG in a mixed environment with both stochastic and deterministic components are provided, showing that the MEG can be written as a sum of gains for the deterministic and stochastic components, (ii) it is shown that under some assumptions, the propagation channel and the antenna are equivalent in the sense that the impact of the channel cross-polarisation ratio (XPR) and the antenna effective cross-polar discrimination on the MEG are symmetrical, (iii) based on the fact that MEG depends on random variables, such as the XPR and antenna rotations because of user's movements, the average, the minimum and maximum MEG of antennas are defined, respectively. Finally, the maximum effective gain of antennas is derived and shown that it is bounded by 4 pi eta(rad), where eta(rad) is the radiation efficiency of the antenna.

引用

页码：214 / 227

页数：14

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