Communications Blockset™

DSBSC AM Modulator Passband - Modulate using double-sideband suppressed-carrier amplitude modulation

Library

Analog Passband Modulation, in Modulation

Description

The DSBSC AM Modulator Passband block modulates using double-sideband suppressed-carrier amplitude modulation. The output is a passband representation of the modulated signal. Both the input and output signals are real sample-based scalar signals.

If the input is u(t) as a function of time t, then the output is

where f_c is the Carrier frequency parameter and θ is the Initial phase parameter.

Typically, an appropriate Carrier frequency value is much higher than the highest frequency of the input signal. By the Nyquist sampling theorem, the reciprocal of the model's sample time (defined by the model's signal source) must exceed twice the Carrier frequency parameter.

This block works only with real inputs of type double. This block is not suited to be placed inside a triggered subsystem.

Dialog Box

Carrier frequency (Hz)

The frequency of the carrier.

Initial phase (rad)

The initial phase of the carrier in radians.

Pair Block

DSBSC AM Demodulator Passband

See Also

DSB AM Modulator Passband, SSB AM Modulator Passband

DSBSC AM Demodulator Passband

Early-Late Gate Timing Recovery