Electronics and Communication Engineering - Communication Systems - Discussion

The correct statement for the coherent binary PSK is that the bandwidth efficiency is 0.5, and carrier synchronization is required. Explanation The bandwidth efficiency of coherent binary PSK is 0.5, meaning that only two bits can be transmitted per symbol. This is because the phase of the carrier wave is used to transmit digital symbols, and only two phases are available.

Carrier synchronization is required for coherent binary PSK because the receiver needs to know the carrier wave's phase to correctly demodulate the received signal. Without carrier synchronization, the receiver will not be able to distinguish between the two phases and decode the received signal correctly.

Yes @Piku, the answer is A.

Answer is A.

Solution : Bandwidth efficiency defined as the ratio of the data rate in bits per second to the effectively utilised channel Bandwidth:

r =[Rb/ B] bit/s/Hz,
= [log2 M/2].
where M = Number of changing in coding i.e. M array PSK.

For Binary PSK, M = 2.
The r = [log2 2/2] = [1/2] = 0.5.