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In telecommunications, a carrier signal, carrier wave, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an input signal for the purpose of conveying information.This carrier wave is usually a much higher frequency than the input signal.n the case of single-sideband modulation (SSB), the carrier is suppressed (and in some forms of SSB, eliminated). The carrier must be reintroduced at the receiver by a beat frequency oscillator (BFO).
modulating differences in am a radio wave known as the carrier or carrier wave is modulated in amplitude by the signal that is to be transmitted the frequency and phase remain the same in fm a radio wave known as the carrier or carrier wave is modulated in frequency by the signal that is to be transmittedm works by modulating varying the amplitude of the signal or carrier transmitted according to the information being sent while the frequency remains constant this differs from fm technology in which information sound is encoded by varying the frequency of the wave and the amplitude is kept constant