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From: | Jawad Seddar |
Subject: | Re: [Discuss-gnuradio] [USRP-users] N210s MIMO feature testing as in the Application Note Synchronization and MIMO updated kb |
Date: | Fri, 29 Jul 2016 10:22:46 +0200 |
Hello usrp-users,
I am trying to test the MIMO capability of two N210s connected. I kept the 2 N210s connected through Ethernet to my Ubuntu 14.04 machine.
Following the Application Note on synchronization and MIMO, I generated two GNU Radio flowgraphs: non-MIMO.grc
and MIMO.grc:
Some questions arise here: 1/ did the WX GUI Scope Sink changed or what ? the document shows something like
However I am getting I guess an “uglier” version
2/ I am not able to find a phase shift block in the gnu radio palette. Does delay or Freq. Selective IQ Correction do the same function ?
Or is there any other block that may allow me to phase correct thw two uhd_sources signals.
3/ Apart from a consideration of Host-Radio data rate, how does connecting both MIMO-connectd USRPs with Ethernet cables or not affect my data paths, alignments of streams.
My ultimate goal is to be to show a pair of coherent receivers as show in the note
Thanks and Regards,
Naceur El Ouni
NIST - Wireless Networks Division (673)
100 Bureau Dr. Building 222-A218
Gaithersburg, MD 20899
(301) 975-3353
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