On Wed, Sep 1, 2010 at 8:52 PM, Sam Keene <[email protected]> wrote:
> Hi, > > Thanks for the reply. I guess I am just trying to better understand this > diagram: > > > http://www.linuxjournal.com/files/linuxjournal.com/linuxjournal/articles/073/7319/7319f3.inline.jpg > > I understand what the decimating filters are doing, but I'm a little > unclear about the NCO. Does this component phase and frequency lock for me, > or will I have to code that myself? > > thanks, > > -Sam > No, there is no freq/phase lock in the USRP/USRP2. We have to do this in software. You can reference the dbpsk and dqpsk blocks that we have already written or the newer dbpsk2/dqpsk2 blocks that use newer techniques for the phase, frequency, and timing locks. Tom
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