Spherical Vector Wave Expansion of Gaussian Electromagnetic Fields for Antenna-Channel Interaction Analysis

被引：35

作者：

Glazunov, Andres Alayon ^{[1
]}

Gustafsson, Mats ^{[1
]}

Molisch, Andreas F. ^{[2
,3
]}

Tufvesson, Fredrik ^{[1
]}

Kristensson, Gerhard ^{[1
]}

机构：

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

[2] Lund Univ, Dept Electrosci, SE-22100 Lund, Sweden

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

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2009年 / 57卷 / 07期

关键词：

Channel modeling; cross-polarization ratio; mean effective gain; scattering matrix; spherical vector wave expansion; SPACE;

D O I：

10.1109/TAP.2009.2016686

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：

In this paper, we introduce an approach to analyze the interaction between antennas and the propagation channel. We study both the antennas and the propagation channel by means of the spherical vector wave mode expansion of the electromagnetic field. Then we use the expansion coefficients to study some properties of general antennas in those fields by means of the antenna scattering matrix. The focus is on the spatio-polar characterization of antennas, channels and their interactions. We provide closed form expressions for the covariance of the field multimodes as function of the power angle spectrum (PAS) and the channel cross-polarization ratio (XPR). A new interpretation of the mean effective gains (MEG) of antennas is also provided. The maximum MEG is obtained by conjugate mode matching between the antennas and the channel; we also prove the (intuitive) results that the optimum decorrelation of the antenna signals is obtained by the excitation of orthogonal spherical vector modes.

引用

页码：2055 / 2067

页数：13

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