railway RRB JE (CBT I + CBT II) Mock Test 2024 Communication Systems Passband Transmission Phase Shift Keying (PSK)
In binary PSK modulation, the signal representation of binary bits is given by:
1
\(S_1(t)=A\cos\left(\omega{_o}t\right)\ \ \rm{and}\ \ S_2(t)=-A\cos\left(\omega{_o}t\right)\)
2
\(S_1(t)=S_2(t)=A\cos\left(\omega{_o}t\right)\)
3
\(S_1(t)=A\cos\left(\omega{_o}t\right)\ \ \rm{and}\ \ S_2(t)=A\cos\left(\omega{_o}t+{\pi\over2}\right)\)
4
\(S_1(t)=A\cos\left(\omega{_o}t\right)\ \ \rm{and}\ \ S_2(t)=-A\cos\left(\omega{_o}t+{\pi\over2}\right)\)