Official PYQ · 2004Set 1 · Q84Digital CommunicationsMCQ1 mark

GATE EC 2004 Set 1 Q84 — Digital Communications

A source produces binary data at the rate of $\text{10 kbps.}$ The binary symbols are represented as shown in the figure given below.

The source output is transmitted using two modulation schemes, namely Bìnary PSK (BPSK) and Quadrature PSK (QPSK). Let $\mathrm{B}_{1}$ and $\mathrm{B}_{2}$ be the bandwidth requirements of BPSK and QPSK respectively. Assuming that the bandwidth of the above rectangular puises is $10 \; \mathrm{kHz}, \mathrm{B}_{1}$ and $\mathrm{B}_{2}$ are

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Answer: C

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Published 10 Oct 2026

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