Problem 4.4 Consider the pulse p(t) whose Fourier transform satisfies P(f) = { 1, 0 ≤ |f| ≤ A; (B - |f|)/(B - A), A ≤ |f| ≤ B; 0, else where A = 250 kHz and B = 1.25 MHz.
(a) (True or false?) The pulse p(t) can be used for Nyquist signaling at rate 3 Mbps using an 8PSK constellation.
(b) (True or false?) The pulse p(t) can be used for Nyquist signaling at rate 4.5 Mbps using an 8PSK constellation.