Re: [Discuss-gnuradio] using DAB+FM+DVB-T dongle for spectrum monitoring

2016-04-05 Thread Nate Temple
Hi vempati, You need to blacklist the default driver for the RTL. Create/open this file: sudo nano /etc/modprobe.d/rtlsdr-blacklist.conf And add the 3 lines below to it, and then restart your machine. blacklist dvb_usb_rtl28xxu blacklist rtl2832 blacklist rtl2830 - Nate > On Apr 4, 2016,

Re: [Discuss-gnuradio] MIMO implementation in GNU

2016-04-05 Thread Marcus Müller
Yes, there's several people that worked on different types of MIMO projects. However, MIMO really just means Multiple Input, Multiple Output. What kind of MIMO system are you after? Do you want to do digital beamforming to direct an antenna beam for maximum power transmission? Do you want to use d

[Discuss-gnuradio] Extracting tags from gr-zeromq blocks directly in python with pmt.deserialize

2016-04-05 Thread Johannes Schmitz
Hello everyone, is there a way to use pmt.serialize(pmt_t obj, std::streambuf sink) and especially pmt.deserialize(std::streambuf source) in Python? Or is there another recommended way how to extract the serialized data from the zeromq messages? See documentation here http://gnuradio.org/doc/s

Re: [Discuss-gnuradio] SIGSEGV on benchmark_rx.py

2016-04-05 Thread Marcus Müller
Hi Serdar, that is peculiar; if you update GNU Radio and VOLK, does it still happen? Best regards, Marcus PS: your English is excellent, don't worry. On 26.03.2016 16:03, Serdar KOYLU wrote: > I recently get two USRP-N210 device, two desktop computer etc., build > GNURadio and others... > > Fin

[Discuss-gnuradio] GRCON 16 hotels

2016-04-05 Thread Jason Matusiak
Do we have an idea when preferred hotels will be announced? Also I heard rumor that there might be some shuttles lining up to take people from DEN to the hotels, is that still a possibility (just trying to book things soon)? ___ Discuss-gnuradio mai

Re: [Discuss-gnuradio] Is cmake 3.0 really required now?

2016-04-05 Thread Tom Rondeau
On Tue, Apr 5, 2016 at 1:22 AM, Martin Braun wrote: > Greg, > > note that this is a requirement of gr-fcdproplus. GNU Radio works with > CMake 2.6, although we'll surely bump that in the not-to-far future. > > M And in general, we have a very strict policy about changing minimum versions of an

[Discuss-gnuradio] gr-fosphor under pybombs-2

2016-04-05 Thread Robert McGwier
I recently updated pybombs to latest version using the git based installation command line from the github instructions. I could not install gr-fosphor because it would not configure. The issue appears to be that the recipe is incomplete. rwmcgwi@origin1:~/gnuradio$ pybombs install gr-fosphor |

Re: [Discuss-gnuradio] gr-fosphor under pybombs-2

2016-04-05 Thread Sylvain Munaut
Hi, > I recently updated pybombs to latest version using the git based > installation command line from the github instructions. I could not install > gr-fosphor because it would not configure. > > The issue appears to be that the recipe is incomplete. That's unfortunately kind of expected. Th

Re: [Discuss-gnuradio] SIGSEGV on benchmark_rx.py

2016-04-05 Thread Marcus Müller
Hi Serdar, I asked Nathan West, and he pointed me to the commit that fixed that [1]. I hope it works now; could you drop us a quick mail whether it's working for you? Best regards, Marcus [1] https://github.com/gnuradio/gnuradio/commit/6baa4c86c5e1f5889e44a4e8e38750b0de3bf061 On 05.04.2016 10:53

[Discuss-gnuradio] Own block in GNURADIO-COMPANION

2016-04-05 Thread Ganesh Patel
I have successfully created my own block(not fully), but I am not able to see this block in GNURADIO's block list. What should I do? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Own block in GNURADIO-COMPANION

2016-04-05 Thread Andrej Rode
Hello Ganesh, > I have successfully created my own block(not fully), but I am not able to > see this block in GNURADIO's block list. What should I do? I guess you have created your own OOT-Block with gr_modtool. Did you read and understand the guided tutorials? [0] If not, you should definitiv

[Discuss-gnuradio] Overflow error in benchmark receiver side "DDDD"

2016-04-05 Thread monika bansal
Hii, I am running benchmark code and on the receiver side after receiving some number of packets(8000 so), it starts showing overflow errors ("") on terminal. Following is the system configuration python benchmark_rx.py -f 1100M --args "addr=10.32.38.163" --to-file=/home/ashokbandi/GNU/a_rx.t

Re: [Discuss-gnuradio] Overflow error in benchmark receiver side "DDDD"

2016-04-05 Thread Marcus Müller
Hi Monika, "D" is a really bad state; it indicates that the network stack or the network card had to drop network packets. It's like "O", but worse. so, how what does benchmark_rate --rx_rate 1e6 say? What is your network card, what is your OS, are you using a firewall, and are you sure everyth

Re: [Discuss-gnuradio] Overflow error in benchmark receiver side "DDDD"

2016-04-05 Thread mleech
What if you make the file "/dev/null" -- does this still happen? On 2016-04-05 14:12, monika bansal wrote: > Hii, > > I am running benchmark code and on the receiver side after receiving some > number of packets(8000 so), it starts showing overflow errors ("") on > terminal. > Follow

Re: [Discuss-gnuradio] Trying to build a DVB-S2 LDPC decoder

2016-04-05 Thread Jose Ruvalcaba
Hi Martin, In fact I did take a look into the gr-FEC folder and the different .cc and .h files available in GNU radio. I was actually looking at the ldpc_decoder .cc and .h files and took note on how it did its decoding process. In fact I had some questions regarding the implementation of the ldpc

Re: [Discuss-gnuradio] Trying to build a DVB-S2 LDPC decoder

2016-04-05 Thread Tracie Perez
Hi Jose, There are 2 LDPC decoders in gr-fec. One is a hard decision bit flip decoder, and I've only tested it on code lengths up to n=2400. The other one is a message passing decoder but I'm not sure of its capabilities/limits. There's no special reason that the biggest matrix is size n=240

Re: [Discuss-gnuradio] costas ambiguity and correlate-and-sync block in qpsk

2016-04-05 Thread Andy Walls
On Tue, 2016-04-05 at 00:00 +, Landsman, Arik wrote: > Hi Andy, > > Added a few comments inline (marked with "==" in lieu of a better email > client).. > > But overall corr_est works very consistently. I did have a few observations: Hi Arik: For my responses to the next two, I'm assuming