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Title: Downlink beamforming for DS-CDMA mobile radio with multimedia services
Authors: Liang, Y.-C. 
Chin, F.P.S. 
Ray Liu, K.J.
Keywords: Adaptive beamforming
Code-division multiple access
Multimedia communications
Power control
Issue Date: Jul-2001
Citation: Liang, Y.-C., Chin, F.P.S., Ray Liu, K.J. (2001-07). Downlink beamforming for DS-CDMA mobile radio with multimedia services. IEEE Transactions on Communications 49 (7) : 1288-1298. ScholarBank@NUS Repository.
Abstract: Downlink beamforming is a promising technique for direct-sequence code-division multiple-access (DS-CDMA) systems with multimedia services to effectively reduce strong interferences induced by high data rate users. In this paper, a new downlink beamforming technique is proposed that converts downlink beamforming problem into a virtual uplink one and takes into account of the data rate information of all users. Since the main complexity of this method is due to the existence of multidelay paths, two simplified algorithms are suggested using equivalent one-path channel vector to replace multipath channel vectors. Computer simulation results are given to evaluate downlink capacity of DS-CDMA systems using base station antenna array and the new algorithms proposed in this paper.
Source Title: IEEE Transactions on Communications
ISSN: 00906778
DOI: 10.1109/26.935169
Appears in Collections:Staff Publications

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