Journal of Applied Science and Engineering

Published by Tamkang University Press


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Chung-Liang Chang This email address is being protected from spambots. You need JavaScript enabled to view it.1 and Te-Ming Tu2

1Chung-Shan Institute of Science and Technology, Taoyuan, Taiwan, R.O.C.
2Department of Electrical Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan, Taiwan 335, R.O.C.


Received: April 28, 2006
Accepted: June 8, 2007
Publication Date: March 1, 2008

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This work examines aperture jitter of the sampling system and its effect on communication systems in additive white Gaussian noise (AWGN) and the frequency-nonselective slowly fading channels. In AWGN channel, we demonstrate that the aperture jitter can influence the input signal of a sampling system, but is independent of AWGN. For the frequency-nonselective slowly fading channel, the noise power due to the aperture jitter has been derived and shown to be as the function of the input signal, the aperture jitter, and the channel envelope. The average bit error rate (BER) of a binary phase shift keying (BPSK) communication system is heavily deteriorated by the aperture jitter noise through the reduction of received signal to noise ratio (SNR).

Keywords: Aperture Jitter, AWGN Channel, Frequency-Nonselective Slowly Fading Channel


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