Modulation

NI RF Vector Signal Analyzers (NI-RFSA 18.1) Help

Edition Date: June 2018

Part Number: 372058U-01

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Modulation is a process that alters the characteristics of a carrier wave according to information in the message signal, m(t), to generate and transmit a modulated wave. There are several types of modulation.

The unmodulated carrier is represented by the following equation:

The amplitude-modulated carrier signal is represented by the following equation:

The frequency-modulated carrier signal is represented by the following equation:

The phase-modulated carrier signal is represented by the following equation:

where m(t) is the time-varying message signal, Ac is the amplitude of the carrier wave, and fc is the frequency of the carrier wave.


Related Topics

Message Signal

Carrier Wave

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