Title :
An error analysis of feedback correlation beamforming for the IS-95 reverse link
Author :
Earnshaw, A. Mark ; Blostein, Steven D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada
Abstract :
We investigate the application of an existing beamforming weight estimation method to the IS-95 reverse link and propose an extension to the algorithm which yields dramatically improved accuracy. An error analysis presents the statistical parameters of the various estimators. This includes an eigenvector perturbation analysis and the derivation of the Cramer-Rao lower bound for this situation. Sample results are used to demonstrate the close agreement between observed and predicted values, thereby justifying the use of the analytical derivations to reduce simulation complexity in cell capacity evaluation studies
Keywords :
array signal processing; cellular radio; channel capacity; correlation methods; covariance matrices; direction-of-arrival estimation; error analysis; feedback; filtering theory; land mobile radio; pseudonoise codes; radio links; statistical analysis; CDMA; Cramer-Rao lower bound; IS-95 coding scheme; IS-95 reverse link; PN code sequence; Walsh chip; accuracy; algorithm; beamforming weight estimation method; cell capacity evaluation; code filtering correlation; covariance matrices; eigenvector perturbation analysis; error analysis; feedback correlation beamforming; observed values; predicted values; simulation complexity reduction; statistical parameters; Analytical models; Antenna arrays; Array signal processing; Directive antennas; Error analysis; Feedback; Mobile antennas; Predictive models; Receiving antennas; Yield estimation;
Conference_Titel :
Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-4788-9
DOI :
10.1109/ICC.1998.685171
