Chapter 3: The Simulink
Simulink is
one the powerful toolboxes in Matlab which is used for graphical representation
of model systems and their simulations. In this, block diagrams are used as
different elements of the system. You can also use an output virtual port such
as spectrum analysers, error checkers and others. So to start, you can type,
>>Simulink
Or you can
click the Simulink Library Browser here: (the one in yellow box)
You can use
the search button to find the block element you need.
From here,
you can start putting a simple system like this, I’m making a simple
transmission system:
You can
change the blocks parameter by double clicking the icon. You must connect the
blocks in the system, to do this click the arrow icon, before or after the
block element and drag it to the next block element you want. So, for the block
properties of each element I used these values:
Random Integer: FM Modulator Passband: Square root: Gain:
M-ary number
= 2 Carrier frequency = 300 *default settings Gain = 5
Initial seed
= 37 initial phase = 0
Sample time =
1.2945e-8 frequency deviation = 50
Output data
type: double
*uncheck everything
For the scope, I
used the spectrum analyzer block with default settings.
After placing and connecting all the blocks click the play button at the top and look at the result. Here is
what I got. Check/solve also manually if the output you desire is correct.
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