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 and is independent of s. Using Q(x) = (1/√2π) ∫_x^∞ e^(-t^2/2) dt, the optimum symbol error probability is _________.

GATE 2024 Electronics & Communication Q45 — Electronics and Communication Engineerin

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Electronics and Communication Engineering · Communication Systems - Digital Communication

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Drill mode: error probability · 2/3

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Communication Systems - Digital Communication has appeared in GATE Electronics & Communication 3 times across 3 years (2019, 2024, 2025).

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