| Communications Toolbox | |
In most media for communication, only a fixed range of frequencies is available for transmission. One way to communicate a message signal whose frequency spectrum does not fall within that fixed frequency range, or one that is otherwise unsuitable for the channel, is to alter a transmittable signal according to the information in your message signal. This alteration is called modulation, and it is the modulated signal that you transmit. The receiver then recovers the original signal through a process called demodulation.
The sections of this chapter are as follows.
| Modulation Features of the Toolbox | Overview of the modulation types and modulation operations that the Communications Toolbox supports |
| Modulation Terminology | Definitions of terms, as well as inequalities that certain modulation quantities must satisfy |
| Analog Modulation | Representing analog signals and performing analog modulation |
| Digital Modulation | Representing digital signals, representing signal constellations for digital modulation, and performing digital modulation |
| Selected Bibliography for Modulation | Works containing background information about modulation |
| | Selected Bibliography for Interleaving | Modulation Features of the Toolbox | |
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