Question

Q3) In coherent schemes, a small pilot is added for synchronization. Because the pilot does not carry information, it causes degradation in P_b. Consider Coherent PSK. Assume that the following two pulses of duration T_b is used:

p(t) = A (1 – B2)cos(wet) + AB sin(wet)

$q(t) = -A\sqrt{1-\beta ^2} cos(w_ct) + A\beta sin(w_ct)$
where $A\beta sin(w_ct)$ is the pilot. Find the error probability when the channel is additive white Gaussian noise with power spectral density of N/2. Hint: Use the general expression for the error rate in binary signaling.

Answer 1

lt) Hence, E A2 (1 To t (A2 2. Simula 2 Tb tHenca