Re: [Discuss-gnuradio] Invalid packets in ofdm_rx example

2018-07-07 Thread Usama Saeed
Thanks for the reply, Michael. As you said, I found a lot of discussions about this topic, but no answers as to the solution of the issue. Some things that I tried to change were the fft length (changed to 128 from default 64), CRC length (32 to 64) and I changed the constant multiplier block such

Re: [Discuss-gnuradio] Invalid packets in ofdm_rx example

2018-07-05 Thread Michael Dickens
Hi Usama - I'm confident that if you searched back through the GR discussion archives, you'd find discussions about this topic: < https://lists.gnu.org/archive/cgi-bin/namazu.cgi?query=header_payload_demux0&submit=Search%21&idxname=discuss-gnuradio&max=20&result=normal&sort=score >. The "Parser ret

[Discuss-gnuradio] Invalid packets in ofdm_rx example

2018-07-05 Thread Usama Saeed
Hello, this is my first time posting a question: I tried using the ofdm_tx and ofdm_rx examples with two USRP B200s, but even though I could see the ofdm spectrum on the receiver end, the time graph at the end of the demodulation was blank (straight line at 0) and I received the error "gr::log :I