Modulation is a process of changing the characteristics of a carrier signal like amplitude, frequency and width, etc. It is the process of adding information to the carrier signal. A carrier signal is a steady waveform with constant amplitude and frequency.
Modulation is normally applied to electromagnetic signals like radio laser and optical signals. The Audio, video, images and text data are added to the carrier signal for transmission over telecommunication.
Types of Modulation
Modulation is categorized into two types depending on the type of signal.
Continuous-wave Modulation
Pulse Modulation
Continuous-wave modulation and Pulse modulation are further categorized as shown below.
Types of Modulationshttps://www.elprocus.com/wp-content/uploads/Types_of_Modulations.jpg
Continuous-wave Modulation
In continuous wave modulation signal is used as a carrier signal which modulates the message signal. There are three parameters that can be altered to achieve modulation namely, frequency, amplitude and phase. Thus, there are three types of modulations.
Amplitude Modulation
Frequency Modulation
Phase Modulation
Types of Analog Modulationhttps://www.elprocus.com/wp-content/uploads/Types-of-Analog-Modulation.jpg
Pulse Modulation
Pulse modulation is a technique in which the signal is transmitted with the information by pulses. This is divided into Analog Pulse Modulation and Digital Pulse Modulation.
