Communications Blockset

Analog Modulation Features of the Blockset

The following figure shows the modulation techniques that the Communications Blockset supports for analog signals. As the figure suggests, some categories of techniques include named special cases.

For a given modulation technique, two ways to simulate modulation techniques are called baseband and passband. Baseband simulation, also known as the lowpass equivalent method, requires less computation. This blockset supports both baseband and passband simulation. This guide recommends and focuses more on baseband simulation. For a comparison of baseband simulation and passband simulation using example models, see Comparing Baseband and Passband Simulation.

The modulation and demodulation blocks also let you control such features as the initial phase of the modulated signal and post-demodulation filtering.

Accessing Analog Modulation Blocks

Baseband Modulated Signals Defined