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GATE Electronics & Communication · Digital Communication - QPSK, BER, AWGN · 2014-2026
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All concepts →2026 Q44
A QPSK modulated signal from an additive white Gaussian noise (AWGN) channel is received with an Eb/No = 8.4 dB at the input of a coherent QPSK demodulator. A maximum-likelihood re...
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2014 PYQ
Consider a discrete-time channel Y = X + Z, where the additive noise Z is signal- dependent. In particular, given the trasmitted symbol $$X\, \in \,\{ \, - \,a,\,\, + \,a\} $$ at a...
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