Abstract:
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Abstract
According to Nyquist law of baseband communication, the received signal against a rectangular
transmitted pulse will be a sinc pulse. Therefore rectangular pulse train will produce sinc pulse
train at receiving end and the sampling instant will be at zero crossing points of the sinc pulse
train. Only the desired pulse will provide the level of received signal since all other sinc pulses
passed through zero but small jitter will produce huge error which is minimized by using raised
cosine pulse instead of sinc pulse. Then raised cosine pulse alleviates the limitation of ideal LP
characteristics of sinc pulse as well as the amplitude of tails of since pulse is heavily reduced in
raised cosine pulse. Our objective is to make the amplitude of tail of sinc or raised cosine pulse to
zero (hence jitter error is eliminated) at the same time the limitation of ideal LP characteristics of
since pulse will be eliminated. The job is done Gaussian pulse at receiving end since Fourier
transform of such pulse does not change the shape of the pulse at the same time amplitude of tail of
the Gaussian pulse is zero. We measure the performance of three pulses at receiving end based on
received SNR in dB varying jitter error and found the Gaussian as the best.
Description:
This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh
