Title :
Alignment of probe antennas for spatial channel emulator
Author :
Okano, Yoshiki ; Imai, Tetsuro ; Kitao, Koshiro ; Saito, Kentaro ; Hagiwara, Jyunichiro
Author_Institution :
NTT DOCOMO, Inc., Yokosuka, Japan
Abstract :
OTA (over-the-air) performance of MIMO (multiple-input multiple-output) mobile terminals employing multi-antennas must be evaluated using the spatial channel emulator which reproduces the multi-path propagation environment around the mobile terminal. Antenna properties of an antenna correlation in addition to the branch power should be adequately evaluated in the spatial channel emulator. In this paper, we investigate based on the calculation the alignment of probe antennas for a spatial channel emulator considering the power angular spectrum of cluster model taking an antenna correlation that has a substantial impact on MIMO performance as the criterion and we clarify that probe antennas should be appropriately aligned, in terms of spacing and numbers, depending on an intended angular spread of arriving waves.
Keywords :
MIMO communication; antenna arrays; mobile antennas; mobile radio; radiowave propagation; MIMO mobile terminal; antenna correlation; antenna properties; cluster model; multipath propagation environment; multiple-input multiple-output mobile terminals; probe antennas alignment; spatial channel emulator; Antenna radiation patterns; Antennas and propagation; Emulation; Laplace equations; MIMO; Mobile antennas; Mobile communication; Probes; Testing; Throughput; Correlation; MIMO; OTA; probe antenna; spatial channel emulator;
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.2009.5384380