MT QAM transceiver carrier

[Wajahat]

In labview modulation tool kit you have provided us with an example MT QAM transceiver.vi,i want to know that where and what carriers has been used in it for frequency up conversion?

[Robert_F]

Hello,

This example is only demonstrating how to generate and perform an analysis on QAM signals.  This example just demonstrates how to perform analysis in software only.  This example only allows you to control the symbol rate and QAM modulation scheme (M-QAM).

Are you trying to generate QAM with RFSG and RFSA?  There are examples that allow you to generate and acquire QAM data, which does allow you to set the center frequency, power level, QAM modulation scheme, symbol rate, and samples per symbol.  (MT RFSG Generate QAM.vi & MT niRFSA QAM Demod.vi)

Are you just trying to implement a basic QAM example in software only or are you trying to implement QAM with RFSA as well as RFSG? 

[esalgado]

Robert (or anybody that knows),

I came across this post and was wondering if there are any combined RFSA/RFSG transceiver example VIs out there?  I havent found any, just pieces.  In particular I'm looking for PSK modulation, but could easily modify a hardware transceiver example with a different modulation.  In my research I've seen a transceiver in software only, HW RFSA examples and HW RFSG examples.  Separately I understand them and they seem fairly straighforward.  However I've found that its quite a big step to jump from a software only analysis to incorporating the necessary HW VIs.  In particular setting up two hardware sessions, creating proper tx/acquisition loop conditions, possible symbol synchronization and resampling issues.  If anybody has an example I could study I'd really appreciate it.

Thanks!

Eric

[Paul_C.]

Hello Eric,

 

I'm don't have anything compiled into a single example.  I did find a great example online here that has a generation an acquisition example with some great documentation.   With continuous generation, you should be able to keep the examples seperate and still generate and acquire appropriately.  Even with a finite generation, as long as you are triggering the acquisition to start at the appropriate time they can still be maintained seperately.  I asked a few colleagues here and I found some other great transmit and receive examples that contain the sync and guard bit information.  They can also be customized to different types of modulation.  Take a look at the llb attached and see if it helps you get started.  Make note to the fact that the generation example exports a marker event that can be used to trigger the acquisition.

I hope this helps,
Paul C.