##### 50. Coherent orthogonal binary FSK modulation ...

50. Coherent orthogonal binary FSK modulation is used to transmit two equiprobable symbol waveforms s1(t)=αcos2πf1t and s2(t)=αcos2πf2t , where α=4mV. Assume an AWGN channel with two-sided noise power spectral density ${N_0\over 2}=0.5*10^{-12}W/Hz$. Using an optimal receiver and the relation Q(v)=${1\over{\sqrt{2\pi}}}\int^\infty_ve^{-u^2/2}du$ the bit error probability for a data rate of 500 kbps is

(A) Q(2)

(B) $Q(2\sqrt2)$

(C) Q(4)

(D) $Q(4\sqrt2)$

Hint:

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