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Basic Concepts of modulation

What are the 3 types of modulation?
The amplitude of the baseband signal is transferred to the high-frequency carrier.
Such a higher frequency carrier is able to travel much farther than the baseband signal.
Therefore, modulation can be defined as the process of superimposing a low-frequency signal on a high-frequency carrier signal.
What is the principle of modulation?
Modulation techniques are roughly divided into four types: Analog modulation, Digital modulation, Pulse modulation , and Spread spectrum method.
Analog modulation is typically used for AM, FM radio, and short-wave broadcasting.
Digital modulation involves transmission of binary signals (0 and 1).
What are the basic modulation techniques?
Fundamental digital modulation methods
The most fundamental digital modulation techniques are based on keying: PSK (phase-shift keying): a finite number of phases are used.
FSK (frequency-shift keying): a finite number of frequencies are used.
ASK (amplitude-shift keying): a finite number of amplitudes are used.

The process by which data/information is converted into electrical/digital signals for transferring that signal over a medium is called modulation. It increases strength for maximum reach of the signals. The process of extracting information/data from the transmitted signal is called demodulation.

Basic Concepts of modulation

What are the 3 types of modulation?

What is the principle of modulation?

What are the basic modulation techniques?