I am working with the OFDM and FEC blocks combined in the same flowgraph, but this configuration led to some issues and I am not being able to sort this out.
I am using the OFDM Transmitter and Receiver Hier Blocks and FEC Encoder and Decoder, but I already used "FEC Extended Decoder/Encoder" with convolutional and dummy variables. With the following parameters: OFDM: * FFT Length: 64 * CP Lenght: 16 * Packet Length: 96 FEC (Repetition) * Frame Bits: 2048 * Repetitions: 2 * a prior prob: 500m I have made individual tests using this configuration and each block works perfectly fine. But apparently there is a bug with their integration Then, I created file sinks in the flowgraph for debugging: One just after the encoder, to show me how the repetition encoder works and if it's working properly; other after the receiver, to look into the packet after all OFDM process. The file after reception lost part of the packets, thus, I believe it means that they are being dropped somewhere between transmission and reception. For example: If I am transmitting: "A B C\nD E F\nG H I\n" I am receiving: "A B C\nG H I\nD E F\nG H I\nA B C\n", i.e. one packet with "D E F\n" and other with "A B C\n" were dropped or lost along the way. After searching for this type of problem, I found something about "Header/Payload Demuxer". Best Regards, Davi
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