Hi Diyar,
it's always better to reply to the Mailing list in whole rather than
just to individuals on there; the point is that eye only have one
pair of eyes, and others can help, too!
>I know there is different type of MIMO coding techniques, but I
could not find an example of them. for example, Alamouti coding (two
transmitter and two receiver).
I'm replying to the discuss-gnuradio mailing list, too. I'd
recommend following up there, it's much more likely that you find
someone who has used done that with GNU Radio on there.
Is there any example to get two channels
between two usrp devices (x310)?
Now, we're dealing with two different meanings of the word
"channel":
1. if you simply want samples from both daughterboards, use the "Num
Channels" option in the USRP source/sink block and set it to 2.
2. if you mean "two independent channels recovered from the channel
matrix, typically via singular value decomposition": I'm not aware
of any ready-to-use example, but I'm sure the GNU Radio mailing list
would know more.
Best regards,
Marcus
On 17.01.2016 14:53, Diyar Muhammed
wrote:
Dear Marcus,
Thank you for your recommendation.
I have good knowledge how to use blocks in gnuradio
software, and know how to add blocks out of tree.
I know there is different type of MIMO coding techniques,
but I could not find an example of them. for example, Alamouti
coding (two transmitter and two receiver).
Is there any example to get two channels between two usrp
devices (x310)?
In advance thank you.
Regards,
diyar
Dear Diyar,
MIMO has very many applications; hence, there can't be a
single block labeled "MIMO".
In general, this sounds like you want to configure your
USRP source and sink for two channels, and follow our
manual page on phase synchronization[1] to get coherent
channels. You'll have to modify the python code that the
GNU Radio companion generates to achieve this.
All in all, getting a MIMO system to run is not what I'd
recommend for a GNU Radio beginner to get started. I'd
strongly suggest starting by going through the GNU Radio
guided tutorials[2] from chapter 1 to 6, to know what you
will have to do to make things work. It's a bit of work at
the beginning, but you'll get results much faster if you
work through all of these, I promise!
Best regards,
Marcus
PS: there's ladies on this mailing list, too, not only
sirs ;)
[1]
http://files.ettus.com/manual/page_sync.html
[2]
https://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials
On 17.01.2016 12:35, Diyar
Muhammed via USRP-users wrote:
Dear sir,
I would like to
implement 2x2 mimo by using gnuradio software and
USRP x310. but I could not find block named mimo
on ettus live usb sdr environment.
Could you recommend
how I can start with 2x2 Mimo?
Regards,
Diyar
PhD student NoU
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