How to observe QAM singals in time-domain in Simulink?
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From: Lei on 19 Apr 2010 03:45 I am trying to build up an OFMD transmitter by using Simulink. The chosen modulation scheme is 64-QAM. I am wondering how to observe the QAM signals in time-domain. My simulink model consists of the following key blocks: Random integer generator, QAM modulator, S/P converter, IFFT block, Cyclic prefix block, buffer and Spectrum scope. After the IFFT algorithm, the frequency-domain QAM signals in converted to time-domian signals. How to observe the QAM signals in time-domain? Many thanks if someone can give some guidance./Lei
From: koubaa kamal on 26 Apr 2010 06:48
Hello, I think there is nothing to observe after IFFT, but you can observe the QAM signal after the QAM bloc, using the "XY graph" bloc that you find in simulink/Sinks, but before that you need to get the real and imaginary parts of the QAM signal, you'll find the bloc for that in math operations in Simulink bloc set, you may need to use Scope also to visualize the imaginary and real signals independently. > After the IFFT algorithm, the frequency-domain QAM signals in converted to time-domian signals. How to observe the QAM signals in time-domain? |