Title :
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
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;
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
DOI :
10.1109/APMC.2009.5384211
