Communication Systems - Digital Communication

A source transmits symbol S that takes values uniformly at random from the set {-2,0,2}. The receiver obtains Y = S + N, where N is a zero-mean Gaussian random variable independent of S. The receiver uses the maximum lik...

A source transmits a symbol s, taken from {-4,0,4} with equal probability, over an additive white Gaussian noise channel. The received noisy symbol r is given by r = s + w, where the noise w is zero mean with variance 4...

A single bit, equally likely to be 0 and 1, is to be sent across an additive white Gaussian noise (AWGN) channel with power spectral density $N_0/2$. Binary signaling, with $0 \mapsto p(t)$ and $1 \mapsto q(t)$, is used...