Uplink Capacity Studies for Adaptive Antenna Arrays in Third Generation CDMA Wireless Systems
01 January 1999
The effects of using adaptive antenna arrays in third generation CDMA wireless systems are analyzed through simulation studies. In contrast to earlier applications of arrays in cellular systems, this work examines the capacity performance in multi-rate traffic scenarios of the reverse link. Under various vector channel models and user population mixtures, the performance of arrays is analyzed along with comparisons with switched beam systems. The study concludes that adaptive antenna arrays have a clear advantage in mixed rate traffic in comparison to non-adaptive antenna techniques, while their performance is sensitive to channel conditions and the array topology. The study provides the upper bound capacity performance that is to be expected.