Title :
Effects of base station antenna height and mobile terminal movement on the vector propagation channels
Author :
Kavak, Adnan ; Yang, Weidong ; Dandekar, Kapil R. ; Xu, Guanghan
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
In wireless communications, propagation characteristics of smart antenna systems can be described by vector channels. In order to accurately characterize and model vector channels, extensive measurements in realistic wireless environments are needed. This paper studies the variation of vector channels in non-stationary propagation environments which are caused by (a) deploying the base station antenna at different heights and keeping the mobile terminal stationary, (b) fixing the base station antenna height and moving the mobile terminal. Measurements of vector channel parameters in a non-line-of-sight (NOLOS) environment are taken by using a 1.8 GHz real-time smart antenna testbed with a uniform circular array at the base station. The experimental results regarding the spatial properties (DOA, multipath angle spread) and space-time correlation properties of vector channels are presented and discussed
Keywords :
UHF antennas; UHF radio propagation; adaptive antenna arrays; cellular radio; multipath channels; time-varying channels; 1.8 GHz; DOA; NOLOS environment; UHF; base station antenna height; mobile terminal movement; multipath angle spread; nonline-of-sight environment; nonstationary propagation environments; propagation characteristics; smart antenna systems; space-time correlation properties; spatial properties; uniform circular array; vector propagation channels; Antenna arrays; Antenna measurements; Antennas and propagation; Base stations; Explosives; Fading; Mobile antennas; Rician channels; Testing; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778298
