Hi Marcus, My goal is to first build a 2-by-2 space multiplexing MIMO using two X310s and GNU Radio. As I'm new to all this stuff, I'm starting from building 2 parallel SISOs. If there are some good kick-start materials or any resources, they will be very valuable. Thanks.
Rui On Tue, Aug 1, 2017 at 11:37 AM, Marcus Müller <muel...@kit.edu> wrote: > Hi Rui, > > sorry, I might simply have missed those, and didn't find your first email > when I saw your recent one! I apologize. > > So, hm, interestingly, we have a severe bug in the packet_encoder block > (its design is pretty bad, and that triggers an unexpected behaviour > underneath). That might mean the packet_encoder is just consuming items as > fast as it can, without actually producing packets. In other words, > packet_encoder is broken; you can't use it right now. > > The more appropriate way of dealing with data might be in the example > flowgraphs that you'd find under /usr/[local/]share/doc/ > gnuradio/examples/digital/packet_loopback_hier.grc ; it's a lot more > complicated, though, and you'd have to write a message / PDU source that > gives you the data you want to transmit, rather than the Random PDU block! > > I don't really know if that is the way to go. What is it, that you want to > build? Maybe the mailing list can advise? > > Best regards, > > Marcus > > On 08/01/2017 05:26 PM, Rui ZOU wrote: > > Here are the two flowgraphs I have used. I have tried to attach the two > files in my first email. Probably failed in doing that. If still not seen, > please let me know so I will try again. Thanks for your help. > > Running the first flow graph will cause GRC stop responding instantly, > while the second one can run for a little while and produce lots of 'L' > before going not responsive. > > Rui > > On Tue, Aug 1, 2017 at 11:09 AM, Marcus Müller <muel...@kit.edu> wrote: > >> Hi Rui, >> >> don't know, to me, it looks like replying didn't work out great, since my >> mail client showed your mail in a new thread. Really, replying to a mailing >> list mail should be nothing more than hitting the "reply" or "reply all" >> button. >> >> Anyway, even the slowest PC/laptop/Raspberry Pi/… I could think of would >> be able to deal with these rates, so there's very, very likely something >> wrong with the GNU Radio flowgraph you're using. Maybe you'd want to share >> that! >> >> Best regards, >> >> Marcus >> >> On 08/01/2017 04:59 PM, Rui ZOU wrote: >> >> Hi Marcus, >> >> Sorry for leaving the title empty, that's the first time to post to a >> mailing list. This is also the first time to reply, no sure if I replied >> correctly. >> >> I use 390.625k as the sampling rate because this is the lowest I can get >> using the Ettus X310 without giving me a warning saying that the sampling >> rate cannot be provided by the hardware. The application is just >> transmitting a file using GMSK modulation on the two daughter boards of >> X310. >> >> Rui >> >> >> _______________________________________________ >> Discuss-gnuradio mailing >> listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >> > >
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