Help with simulation of Line Coding in Simulink

[GhS]

Line Coding in Simulink

Does anyone have tutorials or files for different line codes in Simulink?

I need to simulate Bipolar, Duobinary, HDB3, polar, unipolar and Bipolar line codes…anyone can help?

 

[mtarek16]

Re: Line Coding in Simulink

For line codes, the easiest way I found is to use the Repeating Sequence Stair block form "Sources".

The parameters you'd need to provide are :
1. a vector of the output values.
2. sampling time (== level time)

The problem with this is that you can't determine different pulse widths, so a square wave generated this way will always have a 50% duty cycle (maybe there's a workaround but I don't know of any ..)

So for a bipolar RZ signal your output vector would be something like this :

[-1 0 1 0]'

EDIT :
For variable pulse width, you could do the following :
Say you want a 75% duty cycle unipolar square wave, with unity period,
output vector : [0 1 1 1]'
sampling time : 0.25