Title :
A new low-complexity beamformer-RAKE receiver for WCDMA
Author :
Alam, F. ; Shim, Donghee ; Woerner, Brian D.
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
We demonstrate the performance of a beamformer-RAKE receiver at the uplink of a wideband code division multiple access (WCDMA) system. The receiver employs maximum signal to interference and noise ratio (MSINR) criterion to form its beams in the spatial domain. We propose a new iterative algorithm to solve the generalized eigenvalue problem (GE) resulting from the MSINR beamforming criterion. This algorithm, termed adaptive matrix inversion (AMI), has linear computational complexity with the number of antenna elements. We show the performance gain compared to that of another proposed method
Keywords :
array signal processing; broadband networks; cellular radio; code division multiple access; computational complexity; eigenvalues and eigenfunctions; matrix inversion; multiuser channels; noise; radio receivers; radiofrequency interference; 3G cellular service; MSINR beamforming criterion; WCDMA system; adaptive matrix inversion; antenna elements; generalized eigenvalue problem; linear computational complexity; low-complexity beamformer-RAKE receiver; maximum signal to interference and noise ratio; performance gain; spatial domain beams; third generation cellular service; uplink; wideband code division multiple access; Adaptive arrays; Ambient intelligence; Array signal processing; Computational complexity; Eigenvalues and eigenfunctions; Interference; Iterative algorithms; Multiaccess communication; Signal to noise ratio; Wideband;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.996837
