Answer Happy

Q2)(15 points) A message m(t) with a bandwidth of B = 1 KHz modulates a cosine carrier of frequency fo = 14 KHz to obtain a modulated signal s(t) = m(t)cos (27fct) a) What is the maximum frequency of s(t)? What would be the values of the sampling frequency fs in Hz that could be used to sample s(t)? b) Assume the spectrum of m(t) is a triangle, with maximum amplitude 1, carefully plot the spectrum of s(t). c) Would it be possible to sample s(t) with a sampling frequency fs1 = 10 KHz and recover the original message m(t)? Obtain the spectrum of the sampled signal and show how you would recover m(t), if possible.