Question: Repeat Illustrative Problem II with a rectangular pulse shape in the presence of AWGN for SNR values of 20, 10, 5, and 2 dB.
Problem II: Repeat Illustrative Problem I when the carrier frequency ƒc = 45/T.
Problem I: In a carrier-amplitude-modulated PAM system, the transmitter filter has a squareroot raised-cosine spectral characteristic with rolloff factor ex = 0.5. The carrier frequency is fc = 40 / T. Evaluate and graph the spectrum of the baseband signal and the amplitude-modulated PAM signal.