Hi everyone, I'd like to teach students about OFDM modulation and I'd like to use Gnuradio for the purpose. I'm trying to create a baseband signal with the dvbt_tx_8k.grc project and decode it with the dvbt_rx_8k.grc project. The problem is that the rx project cannot decode the baseband signal created with the tx project. Has anyone tried this before? What am I missing? Do I need to set something differently in the RX project compared to the default?
Is it possible to do it without actually transmitting the baseband signal? I would think so. But then what is the sample rate? The variable is only used in the UHD: USRP sink block, which I'd like to skip. I know I can download a sample baseband file, which works and I can see it is generated, because the SNR is basically infinite. But I'd like to go further and demonstrate with a longer video and possibly loop back the tx to rx to modify the signal on the fly and finally play the stream in vlc. Thanks, Tibor Herman Tibor
