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(a) "Pulse Code Modulation (PCM), as used in telephony, samples a signal at 8 kHz using 256 quantization levels".
i. Outline how this scheme works with the help of sketches and, by reference to the Nyquist's Sampling Theorem, illustrate how the sampling rate was chosen.
ii. Determine the SNR in dB for the quantization error of this PCM setup.
iii. Determine the data rate achievable.
(b) Give three advantages that digital transmission has over analogue transmission.
(c) Explain three types of communication impairments that you are familiar with and, with reference to a standard communication model, state where the above-mentioned impairments generally occur.
Find the resistance of 1 km of copper cable having a diameter of 10 mm if the resistivity of copper is 0.017 x 10 -6 Ωm.
Build an intersection traffic light using the LED's as in the diagram below Day Use the LED's on the trainer (port 11) Main Street and Side Street alternate. Mai
The property due to which the resistance of some metal or compound vanishes under certain conditions is (A) Semi conductivity. (B) Super conductivity.
Modern complex systems are normally constructed by interconnecting sub-units. Therefore the systems engineer is often not too concerned about the details of what is inside these
what is difference between scot and delta connection.
Q. Explain Current-to-Current Amplifier ? The circuit given in Figure is to amplify a current fed to the input of the op amp. Applying KCL at Y, i 1 + i S = i o S
Design 8:1 Mux for a given function, f=Σ (0, 1,5,7,9, 13)
what do you mean by band in communication? how it differs from bandwidth?
derive the transfer function of diesel generator
Speed Control Using Phase Controlled Converters Phase controlled converters converts a constant ac voltage into variable controlled dc voltage. This variable dc voltage
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