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Re: [Discuss-gnuradio] Info regarding replacing USB with Infiniband Opti
From: |
Martin Dvh |
Subject: |
Re: [Discuss-gnuradio] Info regarding replacing USB with Infiniband Optical Fiber |
Date: |
Sun, 25 Feb 2007 14:43:29 +0100 |
User-agent: |
Debian Thunderbird 1.0.2 (X11/20070113) |
Rohit Gupta wrote:
> Hi,
>
> We are working on using GNURadio for using it as RF node capable of
> 2*2/4*4 MIMO. All the RF nodes are connected to very big FPGA like the
> one used in "Berkeley Emulation Engine (BEE)" using "Infiniband"
> Optical Fiber. All the signal processing is implemented in "BEE"
> hardware. We wanted to replace USB with Infiniband so that we can send
> raw ADC/DAC samples to/from BEE processing engine. It would be very
> helpful if some body could give us pointers on how to do this so that
> we can reuse most of the design of GNUradio board.
>
> Also, I have come across some people using two GNURadio boards for 4*4
> MIMO. Is there a document which describes how to synchronize the LOs
> of two GNURadio boards for coherent MIMO processing and program two
> GNURadio boards for 4*4 MIMO??
Read this document, it should explain it:
gnuradio-examples/python/multi_usrp/README
(online available as
http://gnuradio.org/trac/browser/gnuradio/trunk/gnuradio-examples/python/multi_usrp/README
)
Also read:
http://gnuradio.org/trac/wiki/USRPClockingNotes
Make sure you understand the hardware requirements, have the right cables, and
set the usrp clock input and output accordingly.
I wrote the code to enable this and have experience in using it.
I you have any questions or problems getting it to work feel free to ask.
Greetings,
Martin
>
> Thanks,
> Rohit
>
>
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