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
