Question

Define amplitude modulation in communication system.

Answer 1

Amplitude Modulation:-

AM is the simplest way of modulating a signal. Production of amplitude modulated signals is easy. Also the requirements are feasible. When an amplitude modulated signal is created the amplitude of the created signal represents the original baseband signal is transmitted.

Modulation Index

$M=\frac{A_M}{A_C}$

$A_m\to$ Amplitude of Modulating signal

$A_c\to$ Amplitude of carrier wave