Sampling Frequency Optimisation and Nonlinear Distortion Mitigation in Subsampling Receiver


Wong, Chian Hong (2015) Sampling Frequency Optimisation and Nonlinear Distortion Mitigation in Subsampling Receiver. Masters thesis, Multimedia University.

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Subsampling receivers utilise the subsampling method to down convert signals from radio frequency (RF) to a lower frequency location. Multiple signals can also be down converted using the subsampling receiver, but using the incorrect subsampling frequency could result in signals aliasing one another after down conversion. The existing method for subsampling multiband signals focused on down converting all the signals without any aliasing between the signals. The case considered initially was a dual band signal, and then it was further extended to a more general multiband case. In this thesis, a new method is proposed with the assumption that only one signal is needed to not overlap the other multiband signals that are down converted at the same time. The proposed method will introduce unique formulas using the said assumption to calculate the valid subsampling frequencies, ensuring that the target signal is not aliased by the other signals. Simulation results show that the proposed method will provide lower valid subsampling frequencies for down conversion compared to the existing methods.

Item Type: Thesis (Masters)
Additional Information: Call No.: TK5102.9 .W66 2015
Uncontrolled Keywords: Signal processing -- Digital techniques
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering and Technology (FET)
Depositing User: Ms Nurul Iqtiani Ahmad
Date Deposited: 07 Sep 2017 10:58
Last Modified: 07 Sep 2017 10:58


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