GATE EC 2004 Set 1 Q80 — Digital Communications

Choose the correct one from among the alternatives $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ after matching an item from Group $1$ with the most appropriate item in Group $2.$

$$\begin{array}{|l|l|} \hline \text{Group 1} & \qquad \text{Group 2} \\ \hline \text{1: FM} & \text{P: Slope overload} \\ \text{2: DM} & \text{Q: } \mu-\text{law} \\ \text{3: PSK} & \text{R: Envelope detector} \\ \text{4: PCM} & \text{S: Capture effect} \\ & \text{T: Hilbert transform} \\ & \text{U: Matched filter} \\ \hline \end{array}$$