Hello, I'm doing my College final project about gnuradio companion. I have to calculate the BER with OFDM using different modulations to the subcarriers. After that, I have to do a graphic with the BER numbers. The configuration I use is in the images attached. Specifically, I have to send an image and after that I have to calculate the BER. Also, I need to send an random vector and calculate the BER in the same way as with the image. The image that I send in the example is called "imagen" and it's attached in this email.
When I'm using GRC to calculate BER I always have the same problem. First I try to simulate without introducing any noise and get a BER data. Then I try to introduce AWGN noise and the BER data is the same. Clearly I'm making a mistake, but I'm not able to identify what it is. In view of the configuration used, someone could tell me which are my mistakes? Also, I would like to know how to configure the block Channel Model correctly. Thank you all.
Sistema_OFDM_Pruebas.grc
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Sistema_OFDM_Pruebas1.grc
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