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[Discuss-gnuradio] MIMO Question

From: Bruce McGuffin
Subject: [Discuss-gnuradio] MIMO Question
Date: Fri, 14 Aug 2009 16:55:56 -0400
User-agent: Thunderbird (X11/20090625)

A while ago (Nov. 14, 2008) Matt talked about using a USRP2 with
two antennas and two external radio receivers driving the basicRx.
My question is, is it possible to do that if the external radio IF and
bandwidth are too high to sample at 25 MHz without mixing the
signal to a lower freqeuncy first? I'm concerned that the reference
frequency into the mixer is probably complex, and the mixing process
will wind up putting energy from both formerly real signals onto each
of the mixer outputs. Is that true, and if so is there a way around it
that is already implemented? What gnuRadio modules would I use?


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