Title :
Using signal cancellation for optimum beamforming in a cellular CDMA system
Author :
Luo, Tao ; Blostein, Steven D.
Author_Institution :
Dept. of Electr. Eng., Queen´´s Univ., Kingston, Ont., Canada
Abstract :
We propose a new algorithm for estimating the interference-plus-noise covariance matrix for beamforming in a cellular CDMA system in a fading channel. The method uses direct PN sequence signal cancellation. We show in theory that our method outperforms that of [1,2] for finite input data. The results, confirmed by simulation, show that we get improved DOA estimates and SINR with lower computational requirements
Keywords :
Rayleigh channels; array signal processing; cellular radio; code division multiple access; covariance matrices; direction-of-arrival estimation; fading; land mobile radio; linear antenna arrays; optimisation; power control; pseudonoise codes; radiofrequency interference; telecommunication control; DOA estimates; PN sequence signal cancellation; Rayleigh amplitude fading; SINR; algorithm; cellular CDMA system; computational requirements; fading channel; finite input data; interference-plus-noise covariance matrix; optimum beamforming; path loss; perfect power control; shadowing; signal cancellation; uniform antenna array; Antenna arrays; Array signal processing; Base stations; Covariance matrix; Direction of arrival estimation; Fading; Interference; Multiaccess communication; Power system modeling; Signal to noise ratio;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.681657
