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Versatile Modulator

version 1.0 (223 KB) by

Template for signal manipulation GUI.

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This GUI has been thought to be a templete for new projects that required signal manipulation.
GUI manipulate files. Those files must be created by the digital signal processor, and should contain the signals of the more relevant points of the systems.

Exists a function that works as interface between GUI and the processor. Changing that function properly allow to reuse the GUI on different projects.

On this example, a versatile modulator has been place as DSP.
Basically consists on a IQ modulator used for M-ASK, M-QAM, BPSK, QPSK modulated signal generation.

Hope this could be useful,

César

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IMPLEMENTARION ASPECTS
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A.- Not heavily test, and not finshed yet.

B.- Block processing style: so, generate an process a set of samples, then the next set, etc. This allow to process a large amount of samples on a reasonable time, cause the memory is not overloaded.

C.- Bits representation over signals does not work fine yet.

D.- Easy implementation: easy to understand and with few well commented functions and scripts to config.
All the system is distributed on a folder hierarchy, each folder with the functions related to one specific goal.

E.- Constelation calculation wrong: cause it is not well considered the group delay of the raise cosine filter.

F.- Take special care on:
F.1.- Time vector definition: in order to continue properly the time axe between blocks
F.2.- Memory manipulation: to extract the initial conditions and save the final conditions of each block properly.

G.- DSP environment parameters: memory can also be used to keep all the required environment of the DSP (filters coeficients, flags, initial conditions of the system for the incoming block, etc.).

Comments and Ratings (8)

Vini .......

want a matlab code for ASK, PSK, FSK....

ANKIT GARG

THIS IS REALLY A NICE THING TO HAVE.

Cesar Delgado

The code of the modulator is on processing folder. About the demodulation, there are two families: coherent and incoherent. From each family there are several types, and depends on the modulation used.

The more general way is the Costas Loop but, unfortunately, it is not implemented. The only one implemented is the square demodulator for BPSK. You can also find it on the processing folder.

ripan das

just give me the matlab code of ASK,FSK & PSK modulation & demodulation.

liliam RODRIGUEZ

lkjfgkhfk

jose pacheco

me parece un interesante trabajo. felicitaciones..

Gurminder Dhanjoon

thac chi dinh sy

Updates

1.0

BSD License

Completing explanation

Refreshing the ScreenShot

New update

New update of teh system.

Completely different squeme, more focus to be a GUI for signal manipulation, that comes from user configurable signal processing squeme.

New review of the code

Update of the system

MATLAB Release
MATLAB 6.5 (R13)

Download apps, toolboxes, and other File Exchange content using Add-On Explorer in MATLAB.

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Config/

Config/Menus/

GUI/Build/

GUI/Build/Processing/

GUI/Build/Visual/

GUI/Update/Processing/Capture/

GUI/Update/Processing/Refresh/

GUI/Update/Processing/Run/

GUI/Update/Processing/

GUI/Update/

GUI/Update/Visual/Capture/

GUI/Update/Visual/Plots/General/

GUI/Update/Visual/Plots/Specific/

GUI/Update/Visual/Refresh/

GUI/Update/Visual/

Processing/Libs/Files/

Processing/Libs/Filters/

Processing/Libs/GenSignals/

Processing/Libs/QoS/

Processing/Libs/Text/

Processing/Modulators/QAM/IQ/

Processing/Modulators/QAM/

Processing/PLL/

Processing/