Hello @All, i’m working on a project using the FTW 802.11 ofdm encoder Project from Cgran on Ubutntu 10.04 and Gnuradio3.2.2, Python 2.6 , USRP2 RFx2400. Transmitting single Frames works fine.
I want to send multiple packages, so i modified the send_pkt function in the ftw.ofdm.py file and call the “self._pkt_input.msgq().insert_tail(msg) twice. ( and only EOF is send) Both messages from the msgq are consumed, but only the first frame is transmittet. The script stops at tb.wait(). After reading a bit about the GR scheduler i guess there is a problem with the set_output_rate in the ftw_ofdm_preamble.cc ( line 52 ) Is there a way to set the output_rate without knowledge about the numbers of symbols per frame? (or is everything ok with the set_output_rate, and the error is somewhere else?) My frame consists of 2 symbols, each a vector of 80 elements after the passing the ofdm_mapper, pilot,cmap,ifft, cpadder, scale and strem2vec. (64QAM and 9 Byte payload) The preamble has 320 items. Divided by 80 the preamble is 4 symbols long. So the output is 6 symbols. Is that right? Has anybody else tried to send multiple frames? (without calling the whole script again) Where can I find more information about the output_rate and scheduler? Thanks for your help, Hans -- View this message in context: http://old.nabble.com/FTW-802.11-ofdm-encoder%2C-sending-multiple-packages-tp31010536p31010536.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
