A linearized power method for adaptive beamforming in a multipath fading CDMA environment

✍ Scribed by Sungsoo Ahn; Seungwon Choi; Tapan K. Sarkar

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 157 KB
• Volume: 31
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.10034

✦ Synopsis

Abstract

This paper discusses an adaptive procedure of a simplified power method for computing the eigenvector corresponding to the largest eigenvalue of an autocovariance matrix. The objective is to generate a suboptimal weight vector for an adaptive array operating in a multipath fading CDMA (code‐division multiple access) channel. The total computational load of the proposed procedure is about O(4__N__), including an autocovariance matrix update, where N is the number of weights. The performance of the proposed array system is shown in terms of the BER (bit‐error rate) and the allowable capacity in a modeled IS‐95 CDMA signal environment. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 31: 361–365, 2001.