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EEE358S Fundamentals of Communications Engineering

Sampling. In many applications it is useful to represent a signal in terms of sample values taken at appropriatelly spaced intervals.The signal can be reconstructed from the sampled waveform by passing it through an ideal lowpass filter.In order to ensure a faithful reconstruction, the original s

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EEE358S Fundamentals of Communications Engineering

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    1. EEE358S Fundamentals of Communications Engineering Emmanuel O Bejide ebejide@ebe.uct.ac.za http://www.uct.ac.za/depts/staff/rebejide/ Department of Electrical Engineering University of Cape Town

    2. Sampling In many applications it is useful to represent a signal in terms of sample values taken at appropriatelly spaced intervals. The signal can be reconstructed from the sampled waveform by passing it through an ideal lowpass filter. In order to ensure a faithful reconstruction, the original signal must be sampled at an appropriate rate as described in the sampling theorem.

    3. Sampling sampling theorem A real-valued band-limited signal having no spectral components above a frequency of B Hz is determined uniquely by its values at uniform intervals spaced no greater than seconds apart.

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