Title :
Adaptive antenna arrays for downlink capacity increase in third generation wireless CDMA
Author_Institution :
Wireless Syst. Lab, Samsung Telecommun. America, Richardson, TX, USA
Abstract :
This paper presents the results from analysis of the downlink capacity for the third generation CDMA wireless system employing adaptive antenna arrays (AAA) at the base station. The capacity performance for mixed traffic scenarios of the downlink is studied in a multi-cell CDMA network including the array topology, multipath angle spread, and mean DOA beamforming technique. The effect of fast fading, lognormal shadowing, multiple access interference, and thermal noise is considered. The simulation results show that with the AAA, system capacity can be increased several fold compared to non-adaptive antenna base stations
Keywords :
adaptive antenna arrays; array signal processing; cellular radio; channel capacity; code division multiple access; direction-of-arrival estimation; multipath channels; multiuser channels; radio links; radiofrequency interference; telecommunication traffic; thermal noise; 3G CDMA wireless system; adaptive antenna arrays; array topology; downlink capacity; fast fading; lognormal shadowing; mean DOA bearnforming; mixed traffic; multi-cell CDMA network; multipath angle spread; multiple access interference; nonadaptive antenna base stations; simulation results; thermal noise; third generation wireless CDMA; Adaptive arrays; Adaptive systems; Antenna arrays; Array signal processing; Base stations; Downlink; Multiaccess communication; Network topology; Telecommunication traffic; Traffic control;
Conference_Titel :
Radio and Wireless Conference, 2001. RAWCON 2001. IEEE
Conference_Location :
Waltham, MA
Print_ISBN :
0-7803-7189-5
DOI :
10.1109/RAWCON.2001.947523
