Paper Info
Title
Adaptive space-frequency RAKE receivers for WCDMA.
Abstract
Adaptive space-frequency RAKE receivers use maximum ratio combining and multi-user interference suppression to obtain a considerable increase in performance in DS-CDMA systems such as WCDMA. To this end, the signal-plus-interference-and-noise and the interference-plus-noise space-time covariance matrices are estimated. The computational complexity is reduced significantly by transforming the covariance matrices into the space-frequency domain and by omitting noisy space-frequency bins. The optimum weight vector for symbol decisions is the "largest" generalized eigenvector of the resulting matrix pencil. By iteratively updating the optimum weight vector slot by slot, real-time applicability becomes feasible while the fast fading is still tracked. The performance and the computational complexity depend on the number of space-frequency bins, antenna elements, and iterations. Therefore, the performance can easily be scaled with respect to the available computational power.
Year
DOI
Venue
1999
10.1109/ICASSP.1999.758418
ICASSP
Keywords
Field
DocType
ds-cdma system,noisy space-frequency bin,interference-plus-noise space-time covariance matrix,space-frequency bin,computational complexity,space-frequency domain,optimum weight vector slot,available computational power,optimum weight vector,covariance matrix,eigenvectors,matrix pencil,frequency,power control,code division multiple access,generalized eigenvector,performance,radio receivers,iterations,maximum ratio combining,space time,fading,spread spectrum communication,wcdma,rake receiver
Rake,Generalized eigenvector,Maximal-ratio combining,Matrix (mathematics),Computer science,Fading,Control theory,Covariance,Computational complexity theory,Spread spectrum
Conference
ISSN
ISBN
Citations 
1520-6149
0-7803-5041-3
1
PageRank 
References 
Authors
0.58
2
3
Name
Order
Citations
PageRank
C. Brunner110.58
M. Haardt249545.19
Josef A. Nossek353950.14