QPSK DS-CDMA SYSTEM over RICIAN FADING CHANNEL with RAKE RECEIVER for WIRELESS COMMUNICATION

Communication

In this paper we have shown the performance analysis of DS-CDMA wireless communication system with Rake Receiver for Rician fading channel using QPSK Modulation using MATLAB simulator. Next generation requirement of multiple input environments could be satisfied by it. The MATLAB simulator is used here which simulates the multiple input waveform signals in the form of Rake fingers or channels over wireless network just before the Rake Receiver which follows through the DS-CDMA technique due to its performance. We know that the CDMA is an very good technique to analyze the cellular systems. The simulator will give the tremendous functional ideas about the different values of the design option. Here, the backbone of this system is a Matlab Simulator. As nowadays this becomes the iconic tradition to do the analysis. The effective method of system modeling is used to speed up the simulations. With the help of simulator we get the variations in the system parameters due to its different inputs. The transmitted data and the received data can be analyzed in the form of signal waveforms and channels. We can also analyze and Compare the BER for Rician and Rayleigh fading channel under QPSK Modulation scheme. For RAKE, we compare the parameters like SNR, BER in multipath environment. It will be shown that the use of number of bit error in the received data by the RAKE receiver is less than the received data without RAKE receiver

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