Communications Blockset | ![]() ![]() |
Modulation
The Modulation library contains four sublibraries, each of which addresses a category of modulation:
The main Modulation library appears below. You can open it by double-clicking on its icon in the main Communications Blockset library (commlib
), or by typing commmod2
at the MATLAB prompt. Each icon in the Modulation window represents a sublibrary. In Simulink, double-clicking on one of these icons opens the sublibrary. In this document, clicking on one of the icons below jumps to an overview of that sublibrary.
The first column shows the sublibraries for baseband simulation; the second column shows the sublibraries for passband simulation. The first row shows the sublibraries for digital modulation and demodulation. The second row shows the sublibraries for analog modulation and demodulation.
You can open the Digital Baseband sublibrary of Modulation by double-clicking on the Digital Baseband icon in the main Modulation library, or by typing commdigbbnd2
at the MATLAB prompt. In this document, clicking on one of the icons below jumps to an overview of that sublibrary.
Digital Baseband is further divided into sublibraries according to specific modulation techniques:
The figures and tables below show and list the blocks in the method-specific sublibraries. For information about a specific block, see the reference pages that follow.
AM Sublibrary
PM Sublibrary
FM Sublibrary
Block Name |
Purpose |
M-FSK Demodulator Baseband |
Demodulate FSK-modulated data |
M-FSK Modulator Baseband |
Modulate using the M-ary frequency shift keying method |
CPM Sublibrary
Analog Baseband Modulation
You can open the Analog Baseband sublibrary of Modulation by double-clicking on the Analog Baseband icon in the main Modulation library, or by typing commanabbnd2
at the MATLAB prompt.
The table below lists and describes the blocks in the Analog Baseband sublibrary of the Modulation library. For information about a specific block, see the reference pages that follow.
You can open the Digital Passband sublibrary of Modulation by double-clicking on the Digital Passband icon in the main Modulation library, or by typing commdigpbnd2
at the MATLAB prompt. In this document, clicking on one of the icons below jumps to an overview of that sublibrary.
Digital Passband is further divided into sublibraries according to specific modulation techniques:
The figures and tables below show and list the blocks in the method-specific sublibraries. For information about a specific block, see the reference pages that follow.
AM Sublibrary
PM Sublibrary
FM Sublibrary
Block Name |
Purpose |
M-FSK Demodulator Passband |
Modulate using the M-ary frequency shift keying method |
M-FSK Modulator Passband |
Modulate using the M-ary frequency shift keying method |
CPM Sublibrary
Analog Passband Modulation
You can open the Analog Passband sublibrary of Modulation by double-clicking on the Analog Passband icon in the main Modulation library, or by typing commanapbnd2
at the MATLAB prompt.
The table below lists and describes the blocks in the Analog Passband sublibrary of the Modulation library. For information about a specific block, see the reference pages that follow.
![]() | Interleaving | Channels | ![]() |