Here you can find a collection of softwares realized by the Scilab tool, these softwares are mainly oriented to the creation of plots;
there's no 100% compatibility with Matlab but Scilab is, for sure, a very good free alternative.
You can freely download, use or modify all the stuff you'll find here.
Anyone who wishes to collaborate and share his experience, is invited to send, his works.
Scilab is a free open source software, download it here.
Phase Shift Key - 4PSK
Plot of the carrier and of the modulated carrier. Modulator A type and B type. Use of mark_size_unit, mark_style e mark_size to set polylines thickness and color. example of the LaTeX use in Scilab
Amplitude Modulation - AM
plot of the modulating signal, carrier, envelope and modulated carrier. The amplitude of the modulating signal can be set at run time.
Amplitude Modulation - AM DSB - SC
Bode plots of the transfer function G(s)=1+τs
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