error probability

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...

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 t...

A random variable X takes values -1 and +1 with probabilities 0.2 and 0.8, respectively. It is transmitted across a channel which adds noise N, so that the random variable at the c...