Official PYQ · 2026Set 1 · Q12Digital CommunicationsMCQ1 mark

GATE EC 2026 Set 1 Q12 — Digital Communications

Consider a discrete memoryless source with an alphabet of four source symbols. $s(t)$ is a multi-level $(-1,0,+1,+2)$ signal representing a long sequence of random symbols from the above source which is generating $10^{4}$ symbols per second.

Which of the following options is the correct value of equivalent Nyquist bandwidth of $s(t)$ ?

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Answer: C

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Published 10 Oct 2026

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