Title :
Adaptive cell sectorization for UMTS third generation CDMA systems
Author :
Giuliano, Romeo ; Mazzenga, Franco ; Vatalaro, Francesco
Author_Institution :
Dipt. di Ingegneria Elettronica, Rome Univ., Italy
Abstract :
Cell sectorization is commonly used to increase system capacity in cellular systems and is easily implemented. We propose a technique to improve system capacity based on adaptive sectorization. Sectors are rotated and/or resized adaptively in order to equalize the uplink C/I or the total downlink transmitted power in each sector The performance of the proposed procedure is analyzed for both uplink and downlink transmissions. Noticeable performance improvements are obtained when traffic is not uniformly distributed both spatially and in terms of data rate
Keywords :
adaptive antenna arrays; cellular radio; code division multiple access; telecommunication traffic; 3G UMTS CDMA systems; adaptive cell sectorization; beamforming; cellular systems; downlink transmissions; system capacity; third generation UMTS CDMA systems; uplink transmissions; 3G mobile communication; Adaptive equalizers; Antenna arrays; Array signal processing; Downlink; Mobile communication; Multiaccess communication; Performance analysis; Power measurement; Signal processing algorithms;
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.2001.944835
