Optimal Single-Port Matching Impedance for Capacity Maximization in Compact MIMO Arrays

被引：66

作者：

Fei, Yuanyuan ^{[1
]}

Fan, Yijia ^{[2
]}

Lau, Buon Kiong ^{[3
]}

Thompson, John S. ^{[1
]}

机构：

[1] Univ Edinburgh, Sch Elect Engn, Inst Digital Commun, Joint Res Inst Signal & Image Proc, Edinburgh EH9 3JL, Midlothian, Scotland

[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

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

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2008年 / 56卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

Antenna array; antenna measurements; impedance matching; multiple-input multiple-output (MIMO) systems; mutual coupling;

D O I：

10.1109/TAP.2008.2005463

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 complete multiple-input multiple-output (MIMO) system model with compact arrays at both link ends containing arbitrary matching networks is presented based on a Z-parameter approach. The complete channel matrix including the coupling effect is also presented. Utilizing this system model, the optimum single-port matching impedance for capacity maximization is derived for a 2 x 2 MIMO system with coupling at the receivers only. A closed-form result for the optimum matching impedance in high signal-to-noise ratio scenarios is given and proved to be equal to the input impedance of the receive end. Simulation of ideal dipoles verifies our analytical results and demonstrates the superiority of the optimum matching to other matching conditions in improving MIMO system performance. Experimental data for monopoles is also presented to further confirm our numerical findings and validate the accuracy of our derivation.

引用

页码：3566 / 3575

页数：10

共 37 条

[1] On closely coupled dipoles in a random field [J].

Andersen, J. Bach ;

Lau, Buon Kiong .

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2006, 5 :73-75

[2]

[Anonymous], 2006, Elements of information theory

[3]

[Anonymous], 2006, Antenna Theory

[4]

[Anonymous], P IEEE 61 VTC SPRING

[5]

Chiurtu N, 2003, PROCEEDINGS OF THE 3RD IEEE INTERNATIONAL SYMPOSIUM ON SIGNAL PROCESSING AND INFORMATION TECHNOLOGY, P154

[6] Capacity scaling in MIMO wireless systems under correlated fading [J].

Chuah, CN ;

Tse, DNC ;

Kahn, JM ;

Valenzuela, RA .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2002, 48 (03) :637-650

[7]

Clerckx B, 2003, 2003 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5, P2638

[8] MIMO configurations for relay channels: Theory and practice [J].

Fan, Yijia ;

Thompson, John .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2007, 6 (05) :1774-1786

[9]

FEI Y, 2006, P 1 EUR C ANT PROP E

[10] Mutual coupling in multi-element array antennas and its influence on MIMO channel capacity [J].

Fletcher, PN ;

Dean, M ;

Nix, AR .

ELECTRONICS LETTERS, 2003, 39 (04) :342-344

← 1 2 3 4 →