Title :
Smart antennas performance evaluation and capacity increase for WCDMA UMTS
Author :
Martinez, Ramón ; Trosa, Davide ; De Haro, Leandro ; Calvo, Miguel
Author_Institution :
E.T.S.I. Telecomunicacion, Univ. Politecnica de Madrid, Spain
Abstract :
New mobile communication services are appearing, and the rate of demand is rapidly increasing. Smart antennas are presented as a technology capable of satisfying the increased capacity demand. We present some simulation results obtained for the wideband CDMA UMTS vehicular scenario using switched-beam and adaptive antenna technologies. Switched-beam and 120° sectored antenna performances are compared for different user densities. Both intracell and out-of-cell interference are calculated. User mobility and channel models proposed in the UMTS radio transmission technologies specification are used. Results for different angular spread and number of array elements for the adaptive antenna system are also presented
Keywords :
adaptive antenna arrays; antenna radiation patterns; cellular radio; code division multiple access; multibeam antennas; radiofrequency interference; telecommunication channels; 3G UMTS; W-CDMA; adaptive antennas; antenna radiation pattern; intracell interference; mobile communication services; multibeam antenna; out-of-cell interference; sectored antennas; smart antennas; switched-beam antennas; third generation Universal Mobile Telecommunications System; wideband CDMA; 3G mobile communication; Adaptive arrays; Adaptive systems; Base stations; Broadband antennas; Communication switching; Interference; Multiaccess communication; Telecommunications; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944820
