Recursive adaptive beamforming for wireless CDMA
Ayman F. Naguib, Arogyaswami J. Paulraj · 2002
The increasing demand for mobile communication services without corresponding increases in RF spectrum allocation requires new techniques to improve spectrum utilization. Spatial processing using antenna arrays at the base-station has been proposed to reduce co-channel interference and reduce fading of the desired signal, leading to an increase in system capacity. The use of base station antenna, arrays in wireless CDMA is studied. A recursive, fast, and numerically stable algorithm estimating the array response vector and the optimum beamforming weights is derived. Our approach uses a space-time processing approach for estimating-the array response vector, and hence the optimum beamforming weights. Simulation results are also presented.