ohhh, now I understand. It produces UUUU in the transmitter side - which probably means underflow with my laptop. Do you know how to decrease this power?
Mon, 31 Mar 2014 08:44:49 -0700 (PDT) от Bogdan Diaconescu <b_diacone...@yahoo.com>: >For dvbt the bandwidth is around 9.14Msps so with the rational resampler you >need to set-up the USRP at 10Msps. 1Msps will not work as only a part of the >spectrum will be received. > >Bogdan > > >On Monday, March 31, 2014 6:36 PM, Nasi <nesaz...@mail.ru> wrote: >Hi, > >Thanks! > >I am using collected data also as you say. >I am using sampling rate of 1 Mbps instead of 10 Mbps which must be the same >for static transmission. Isn't it? > > > > >Mon, 31 Mar 2014 08:23:01 -0700 (PDT) от Bogdan Diaconescu ><b_diacone...@yahoo.com>: >Hi, not having access to my setup for now but for the beginning you could try >recording the spectrum with your USRP and then use the file source to decode >the signal offline. There is a script file apps/capture.sh that I usually use >to capture data. You may tweak it for your needs (frequency, gain). > >Sometimes it was reported that on old cpus the processing power is not enough >so that the result is an overflow (you directly see a long OOO message in this >case). Try to see if this is the case. > >One way to reduce the overhead is to run the receiving flow directly from >command line instead of gnuradio-companion (e.g. ./top_block > out.txt) after you have generated the flowgraph. The gnuradio-companion cannot cope with big amount of data when the blocks gets out a lot of text. > >Bogdan > > >On Monday, March 31, 2014 1:22 PM, Nasi <nesaz...@mail.ru> wrote: >Hi all, > >I am using ubuntu 13.04, GNURADIO 3.7. >I cannot transmit or receive using two (USRPN200 + XCRV2450 d.board+VERT2450 >antennas) devices for DVB-T project. >Here is the dvb-t project: https://github.com/BogdanDIA/gr-dvbt > >It will be very helpful and appreciated if you help me. If someone tested it >or can do it, please let me know. As far as I know someone tested it with N210 >model. > > I think this failure is due to high noise/interference or smt. else. However >I tested it already with all possible configurations. I also attach my .grc >files. > > >-- >NE >_______________________________________________ >Discuss-gnuradio mailing list >Discuss-gnuradio@gnu.org >https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > >-- >NE > > -- NE
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