Author : Ahmed Refaat Hamad, Neelesh Agrawal, A.K.Jaiswal and Navendu Nitin

Direct-sequence code-division multiple-access (DSCDMA) cellular systems, such as Wideband CDMA (WCDMA), are limited in performance by interference. Several types of Rake Receivers like A-Rake, S-Rake, P-Rake, Adaptive frequency Rake, Time frequency Rake, Conventional MMSE Rake and Adaptive MMSE rake are used for WCDMA. A Beam former-Rake receiver can be an effective solution to provide the receivers enhanced capabilities needed to achieve the required performance of a WCDMA system. Beam former-Rake receivers for WCDMA uplink employ three Eigen-Beam forming techniques which based on the Maximum Signal to Noise Ratio (MSNR) and Maximum Signal to Interference and Noise Ratio (MSINR) criteria. In this paper, we have analyzed the performance of Beam-former rake receiver and Adaptive rake receiver for WCDMA.

Keywords: Adaptive MMSE Rake Receiver, Beam former-Rake receiver, Genetic Algorithm, Conventional Algorithm, Maximum Signal to Noise Ratio (MSNR).