Did you solve it? I am trying to add FEC in the OFDM chain but I didn't figure out how to do this, yet.
Any advice or do you know if someone did it and the code is public? Thanks Veljko Pejovic wrote: > > Hi, > > I tried to use trellis_encoder from trellis package to perform > convolution coding before sending the message to the OFDM modulator. > However, ofdm_mod has zero input signature, and relies on send_pkt() > which calls ofdm_packet_utils.make_packet() and then puts the message > in the queue at gr.ofdm_mapper_bcv. Since the chain basically starts > with ofdm_mod I don't see the way to connect the trellis_encoder > before the signal is already modulated. In ftw80211 project they > modify ofdm_packet_utils and write their own convolution coding > method, I could do the same, but then I would miss all the benefits of > this nice trellis package. > > Interestingly, the other modulation blocks such as dbpsk or d8psk have > different input signatures, and I would put the trellis_encoder > between the gr.message_source and modulator in pkt.py. Is there a way > to seamlessly introduce trellis_encoder in the flow graph with an OFDM > modulator? Am I missing something here? > > > Thanks, > > > Veljko > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://old.nabble.com/trellis-encoder-and-OFDM-modulator-tp27801875p33174362.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
