Assignment:
Consider a voice-grade telephone circuit with a bandwidth of 3 kHz. Assume that the circuit can be modeled as an AWGN channel.
(a) What is the capacity of such a circuit if the SNR is 30 dB?
(b) What is the minimum SNR required for a data rate of 4800 bits/s on such a voice-grade circuit?
(c) Repeat part (b) for a data rate of 19,200 bits/s.
Provide complete and step by step solution for the question and show calculations and use formulas.