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BER Analysis and MAI Cancellation in AWGN and Rayleigh Fading Channels for CDMA System

Author(s):

Raghu H S , VTU PG centre, Mysuru; Lohith B N, VTU PG centre, Mysuru

Keywords:

BER, MAI, ADALINE, AWGN, RAYLEIGH FADING, QPSK, CDMA, MMSE Equalizer

Abstract

The objective of project is a Bit Error Rate (BER) analysis and Multiple Access Interference (MAI) cancellation in AWGN and Rayleigh fading channels for Code Division Multiple Access (CDMA) communication systems using Adaptive linear neuron model(ADALINE) and MMSE Equalizer. The BER and SNR are the main performance parameter was chosen for simulation. The test performances are analyzed by simulating a CDMA communication system with QPSK modulation and demodulation. The present technology advancement in cellular mobile communication systems has become more demanding for better quality of service. It requires wide bandwidth for huge quanta of data transfer. CDMA communication system easily meets these requirements of cellular communications. In CDMA communication environment the channel is time varying. This characteristic feature of the channel leads to a phenomenon called Fading. Fading channels induce rapid amplitude fluctuations in the received signal. If they are not compensated for then this will lead to serious performance degradation. The functional performance is tested by carrying out simulations using MATLAB® platform 7.10 version. The simulated results subsequently have shown quite improved and optimized performance.

Other Details

Paper ID: IJSRDV3I31224
Published in: Volume : 3, Issue : 3
Publication Date: 01/06/2015
Page(s): 1737-1741

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