Modulation and it's techniques

Question

Accepted Answer

Modulation is the process of varying a carrier signal to transmit information.

Modulation techniques include Amplitude Modulation (AM), Frequency Modulation (FM), and Phase Modulation (PM).
AM involves varying the amplitude of the carrier signal to transmit information.
FM involves varying the frequency of the carrier signal to transmit information.
PM involves varying the phase of the carrier signal to transmit information.
Other modulation techniques include Quadrature Amplitude Modulation (QAM) and Orthogonal Frequency Division Multiplexing (OFDM).