PAM PPM

Submitted by efrenreyes on Wed, 04/07/2010 - 02:19
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Hi i am new to Vissim and i'd like to ask for a project i have to do. Its about pulse modulations ppm pam and pwm. has anyone any ideas about the schematics ? Thanks

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Thanks for answering i'd like

Submitted by efrenreyes on Wed, 05/12/2010 - 00:13.

Thanks for answering i'd like to say that it is for simulation system and i dont know about the frequency. I was asked to create other schematics and not those from the database of vissim so i can compare the results at any time of signal proccesing.

Are you doing simulation or

Submitted by Richd on Thu, 04/08/2010 - 09:00.

Are you doing simulation or hardware system? What signal frequencies are you looking at? For simulation I recommend VisSim/Comm, our data comms package. You can download a free 2 month trial here. VisSim/Comm performs PAM, PWM, PPM, PCM, ASK, FSK, and BPSK as well as spectrally efficient technologies such as QPSK, QAM and adaptive filtering. You can look at bit error rates, energy per bit, and channel fading effects.
For hardware implementation, I recommend the VisSim/Embedded Controls Developer with a low cost TI experimenter board. The board has built-in hardware for generating any kind of PWM waveform, and you can generate Pulse Position Modulation as well. You can read PAM with the 16 ADC channels, but output of PAM will require some additional hardware.