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Demodulation Of Narrowband Radio Frequency Signals By Aliasing Sampling, Chun-Ching Lin
Demodulation Of Narrowband Radio Frequency Signals By Aliasing Sampling, Chun-Ching Lin
Dissertations and Theses
The objective of this thesis is to study the demodulation of narrowband radio frequency signals by aliasing sampling in order to reduce the sampling rate. The spectrum can be recreated at the lower frequency position by aliasing sampling. However, if the sampling rate is deviated from the desired one, error will occur. The sensitivity to the frequency error of aliasing sampling is studied.
One main reason of the deviation of the sampling rate is the frequency drifting of the local oscillator. Being able to compensate the oscillator drifting errors inexpensively, automatic frequency control (AFC) loops are important at receivers. Two …