Effects of antenna matching on compact MIMO beamforming systems in frequency-selective fading channels

Author

Guo, Qiang ; Zhou, Xi-Lang ; Yin, Wen-Yan ; Zhang, Wei-Jiong

Author_Institution

Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China

fYear

2009

fDate

7-10 Dec. 2009

Firstpage

445

Lastpage

448

Abstract

A complete MIMO beamforming system model with mutual coupling and matching network is proposed to cope with frequency-selective fading channels. The overall system transfer matrix is derived using Z-parameter method. The transmit and receive weight vectors are iteratively determined using a MIMO beamforming scheme. Performance of the MIMO system with various antenna matching methods is studied in numerical experiment. Simulation results show that input impedance match gives good performance compared with the optimum impedance which maximizes the capacity. MIMO system performance can be improved by properly selecting the matching impedance.

Keywords

MIMO communication; antennas; array signal processing; fading channels; impedance matching; Z-parameter method; antenna matching methods; compact MIMO beamforming; frequency-selective fading channel; input impedance matching; system transfer matrix; Array signal processing; Frequency; Frequency-selective fading channels; Impedance matching; Loaded antennas; MIMO; Mutual coupling; Receiving antennas; Signal to noise ratio; Transmitting antennas; MIMO systems; beamforming; frequency-selective fading; impedance matching; mutual coupling;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2009. APMC 2009. Asia Pacific

Conference_Location

Singapore

Print_ISBN

978-1-4244-2801-4

Electronic_ISBN

978-1-4244-2802-1

Type

conf

DOI

10.1109/APMC.2009.5384211

Filename

5384211