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TITLE:

Performance Evaluation of a DS-CDMA System in a Rayleigh Fading Environment

AUTHORS:
M. A. Rahman, M. M. Alam, Md. Khalid Hossain, Md. Khairul Islam, Khan M. Nasir Uddin, Md. Shahinuzzaman

KEYWORDS:
DS-CDMA, Rayleigh Fading, Performance Analysis, SNR, BER, ASK, PSK, FSK, MATLAB, AWGN

JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.4 No.1,
December
23,
2015

ABSTRACT: This work represents the performance evaluation of DS-CDMA in a Rayleigh fading environment. Performance analysis was carried out for a DS-CDMA system to evaluate the signal-to-noise ratio (SNR), signal-to-interference ratio (SIR) and bit error rate (BER) for different modulation schemes like ASK, PSK and FSK. Results were evaluated at different data rates and were presented in terms of SNR, SIR and BER. Computer simulation was also carried out by using Matlab to evaluate the signal waveforms with and without addition white Gaussian noise (AWGN). Butterworth filtered waveform was given to get better signal quality. Decoded output waveforms were also evaluated to confirm the simulation.