consider a binary PSK system with pilot carrier added forsynchronization purposes,resulting in
s1(t)=AcCos(ωct)+αAcCos(ωct+θ) 0 s0(t)=-AcCos(ωct)+αAcCos(ωct+θ) 0where Tb=(n/fc) and n is an integer.
a) Derive an expression for BER as a function of αand (Eb/No) if θ=0
b) Repeat part(a) if θ= -(π/2)