Hi Johnathan, can you suggest me a place where I can find more information about the phase sync and the freq sync methods you used in your work. It will be of great help to me.
Thanks, Ali. On Tue, Feb 3, 2009 at 6:45 PM, Johnathan Corgan < jcor...@corganenterprises.com> wrote: > On Tue, Feb 3, 2009 at 4:28 PM, Mark Kuhr <kuhr...@auburn.edu> wrote: > > > So your DSSS code is not yet public? How did you manage waveform > > synchronization among multiple USRPs? > > Not sure I understand your question. My DSSS implementation is a > unidirectional continuous transmitter and separate receiver, > implementing m-sequence based chipping. The receiver performs code > phase synchronization using early/prompt/late correlation power and > frequency synchronization using a Costas loop on the despread BPSK > signal. > > Or perhaps you're asking about multiple, simultaneous > transmitter/receiver pairs. Right now, this is not optimal, as > m-sequences have poor cross-correlation properties, but I'll > eventually put in Gold code generators. While this system was > designed with a completely different purpose in mind, one goal I have > is to eventually be able to use the receiver part of the code as a GPS > L1 demodulator. > > Johnathan > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Mir Murtuza Ali Graduate Student Center for Wireless Communications University of Mississippi University, MS 38677
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