Multiple choice

If S represents the carrier synchronization at the receiver and $\rho$ represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is

  1. $\rho$ = 0.5, S is required
  2. $\rho$ = 1.0, S is required
  3. $\rho$ = 0.5, S is not required
  4. $\rho$ = 1.0, S is not required
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A Correct answer
Explanation