EC > GATE 2024 > Digital Communication
A digital communication system transmits through a noiseless bandlimited channel [-W, W].
The received signal z(t) at the output of the receiving filter is given by z(t) = Σn b[n] x(t − nT) where b[n] are the symbols and x(t) is the overall system response to a single symbol.
The received signal is sampled at t = mT. The Fourier transform of x(t) is X(f).
The Nyquist condition that X(f) must satisfy for zero intersymbol interference at the receiver is
Correct : B
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