Abstract:
Direct Sequence Code Division Multiple Access (DS-CDMA) is a multiple
access radio communication system where multiple users can have access to
the same system using the same frequency spreading over the entire
transmission band. DS-CDMA is one of the techniques to efficiency overcome
the frequency selective fading and interferences. In this thesis, an analytical
approach is presented to evaluate the bit error rate (BER) performance of DSCDMA
system over frequency selective multipath Rayleigh fading channel
with perfect power control using the standard Gaussian approximation. The
performance of DS-CDMA over the frequency selective fading channel in
terms of bit error rate (BER) is examined with the varying numbers of
multipath components, varying number of interfering cells, various process
gain, varying the amplitude of the signal and fading variances etc. From the
analytical results we have found out the limitations of the system BER on the
signal amplitude and signal to noise ratio (SNR). Thereafter, we have
determined the optimum system design parameters. The evaluated results show
that the BER performance is affected by these parameters.
Description:
We would like to thank our thesis supervisor Lieutenant Colonel A K M
Nazrul Islam for his support and guidance during the duration of our thesis
work “Performance Analysis of DS-CDMA System over a Frequency
Selective Multipath Rayleigh Fading Channel with Perfect Power Control”.
His dedication and knowledge truly inspired us during our work.
We would like to express our heartfelt gratitude to our supervisor for
providing us with all the useful materials which proved really helpful during
our analysis. We would like to express our gratitude to our teachers who
instructed us a lot by their constructive suggestions and encouragement. We
also thank all the teaching and non-teaching staff for their nice cooperation.
This report would have been impossible without the perpetual moral support
of our family members. We would like to thank them all.
