FDD - Frequency Division Duplex. You can communicate in both directions simultaneously using different frequency bands.

/MiO

William Cox wrote:
Lin,
I don't know what FDD is. The board would only support it if the original board does, and/or if someone implements it. As of yet, I'm trying to figure out if reducing the size of the USRP1 baord, by removing one of the transceivers, is feasible. I'm a GNURadio/USRP newbie and I'm just going off looking at the pysical board and thinking I didn't need half of it.
-William


On Sun, Aug 29, 2010 at 10:32 PM, Lin HUANG <huanglin.b...@gmail.com <mailto:huanglin.b...@gmail.com>> wrote:

    Will it support FDD full duplex? I'd like to run OpenBTS on a
    smaller USRP.

    -Lin

    2010/8/28 William Cox <wc...@ncsu.edu <mailto:wc...@ncsu.edu>>:
     > Yes, same functions, just smaller and only one rx/tx pair.
     > -William
     >
     > On Friday, August 27, 2010, Abdalaleem Andy James Potter
     > <ajpot...@youdinar.com <mailto:ajpot...@youdinar.com>> wrote:
     >> Would it have the same functionality?
     >>
     >>
     >> On 27 Aug 2010, at 22:05, William Cox wrote:
     >>
     >>
     >> I'm interested in making a much smaller USRP1 board. Has anyone
    tried this? I was planning on stripping out the 2nd AD9862 and the
    power supply circuit. Is there anything I should watch out for?
     >> Thanks.
     >> -William
     >>
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     >>
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