Title :
Adaptive beamforming from the generalized eigenvalue problem with a linear complexity for a wideband CDMA channel
Author :
Kwon, Seyong ; Oh, Injeong ; Choi, Seungwon
Author_Institution :
Sch. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
We introduce a simple adaptive procedure for computing the suboptimal weight vector of an array system operating at the cell-site. The total computational load for computing the primary eigenvector of the generalized eigen-problem is only O(8.5N) including the matrices updates. The performance of the array system provided by the proposed beamformer is shown in 3 typical cases of multipath fading wideband CDMA channel
Keywords :
adaptive signal processing; array signal processing; broadband networks; cellular radio; code division multiple access; computational complexity; eigenvalues and eigenfunctions; fading channels; multipath channels; multiuser channels; radio networks; adaptive beamforming; array system; cell-site; computational load; generalized eigenvalue problem; linear complexity; matrices updates; multipath fading; suboptimal weight vector; wideband CDMA channel; Adaptive arrays; Adaptive systems; Antenna arrays; Array signal processing; Eigenvalues and eigenfunctions; Fading; Least squares approximation; Multiaccess communication; Signal to noise ratio; Wideband;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.801725
