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Title: Nonuniform sampling algorithms for DASP-based instrumentation
Author: Qu, Dongdong
ISNI:       0000 0004 2671 4255
Awarding Body: University of Westminster
Current Institution: University of Westminster
Date of Award: 2008
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The aim of this project is to explore possibilities of implementing low-cost instruments such as spectrum analyzers and oscilloscopes by applying Digital Alias-free Signal Processing (DASP) techniques. For most of signal processing tasks where traditional DSP is applied the information of bandwidth of the processed signal is required to be known. Here the sampling rate is decided to be at least twice the actual bandwidth of the signal. However, there are cases where the exact bandwidth information of the processed signal is unknown or the reconstructibility of the processed signal is not needed. Then this demand on sampling rates leads to oversampling of the analysed signal. Review of literature shows that application of DASP is an ideal solution on this issue. In comparison with traditional DSP, DASP does not require the exact bandwidth information of the signal and can still process the analysed signals for different signal processing tasks at lower sampling rates such as sub-Nyquist, even sub-Landau rates. Therefore the work reported in this thesis concentrates on the investigation of DASP techniques for reducing the costs of contemporary instruments.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available