Official PYQ · 2008Set 1 · Q71Digital CommunicationsMCQ1 mark

GATE EC 2008 Set 1 Q71 — Digital Communications

A speech signal, band limited to $4 \; \mathrm{kHz}$ and peak voltage varying between $+5 \mathrm{V}$ and $-5 \mathrm{V}$ , is sampled at the Nyquist rate. Each sample is quantized and represented by $8$ bits.

If the bits $0$ and $1$ are transmitted using bipolar pulses, the minimum bandwidth required for distortion free transmission is

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Answer: A

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Published 10 Oct 2026

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