Quiz-1 ( Sampling)

digital communication, digital communication Quiz,  digital communication sampling,  digital communication questions,  digital communication all assignments, Pulse code modulation, folding frequency, Nyquist criteria, nyquist rate, sampling theorem

Quiz 1

Sampling

Q.1) Determine the Nyquist rate & Nyquist interval for

Q.2) A waveform   [10+10 sin (500t + 30)] is to be sampled periodically and reproduced from these sample values. Find maximum allowable time interval between sample values. How many sample values are needed to be stored in order to reproduce one second of this waveform?
Q.3) A signal

is uniformly sampled.

                

          a) What is the maximum allowable time interval between sample values that will ensure                       faithful signal reproduction?

          b)    If one hours of signal to be produced, how many samples needs to be stored?

Q.4) Consider a signal with given PSD. Alias will be possible if signal is sampled at rate of 90% of Nyquist rate. In such scenario what is folding frequency.

Q.5) Consider a compact disc that uses pulse-code modulation to record audio signals whose bandwidth

Specifications of the modulator include the following:

Quantization:        uniform with 512 levels

Encoding:             binary

Determine (a) the Nyquist rate, and (b) the minimum permissible bit rate.

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