EC > GATE 2017 SET-1 > Digital Modulation
In binary frequency shift keying (FSK), the given signal waveforms are u0(t)=5cos(20000πt);0≤t≤T, and u1(t)=5cos(22000πt);0≤t≤T, where T is the bit-duration interval and t is in seconds. Both u0(t) and u1(t) are zero outside the interval 0≤t≤T. With a matched filter (correlator) based receiver, the smallest positive value of T (in milliseconds) required to have u0(t) and u1(t) uncorrelated is
Correct : b
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