A Novel Optical Code RAKE Receiver Using a Multiport Encoder/Decoder

A New Decorrelating RAKE Receiver for Long-code WCDMA

Implementation of a Rake Receiver Design

In this paper, we describe the design and implementation of a rake receiver for use with ultra wide band (UWB) systems. The rake receiver uses spread spectrum modulation (SSM) aided by kasami sequence generator .The combination is found to be effective in dealing with multipath fading and signal to noise ratio. The design is initially simulated using MATLAB 7.10 and is implemented using a HDL c...

A Blind Receiver Using Optical Hard-Limiters for Optical Code Division Multiple Access

We propose a receiver using two optical hardlimiters (OHL’s) for optical code division multiple access (CDMA). In the receiver the likelihood ratio test is made by using the photocounts obtained by the intensities in the weighted positions of the signature sequence. Before the test, two OHL’s enable the proposed receiver to remove the effect of the multiaccess interference (MAI), without knowle...

Performance Analysis of Beam-Former Rake receiver and Adaptive Rake receiver for WCDMA

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 formerRake receiver can be an effective solution to provide the recei...

Throughput Enhancement in Wcdma Using the Generalized Rake Receiver

In a multipath fading channel, when there are many interfering CDMA signals, the multipath causes loss of orthogonality between different signals leading to intracell interference. The Generalized RAKE receiver, proposed recently in the literature, is based on the concept that this interference is not white but colored. Therefore, unlike the conventional RAKE receiver, GRAKE tries to match to t...