Aperture Jitter Analysis of Sampling System and Its Effect on Communication Systems in AWGN and Frequency-Nonselective Slow Fading Channels

ABSTRACT 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).