An Adaptive Beamforming Algorithm with a Linear Complexity for a Multipath Fading CDMA Channel

Sungsoo AHN  Seungwon CHOI  Tapan K. SARKAR  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.8   pp.2317-2320
Publication Date: 2001/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antenna and Propagation
adaptive beamforming,  gradient-sign,  CDMA,  mobile communication,  

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This letter introduces an alternative adaptive beamforming with the total computational load of about O(3N) where N denotes the number of antenna elements. The proposed technique finds a weight vector that maximizes the received signal power at the array output by searching for the suboptimal phase of each weight in a multipath fading CDMA mobile communication environment.