Hi Andreas, where is the inaccuracy in sampling frequency exactly happening? In USRP?
Regards, Hoo Chang Shin. ----- Original Message ---- From: Andreas Müller <[EMAIL PROTECTED]> To: discuss-gnuradio@gnu.org Cc: [EMAIL PROTECTED] Sent: Wednesday, June 4, 2008 12:48:00 PM Subject: Re: [Discuss-gnuradio] OFDM results. Hello Per > What is the cause of the problems. Clock jitter ?, non-linearities ? > No idea what could be the problem in your case, but maybe try also plotting the phase of all symbols in one OFDM symbol vs the offset from the central carrier. I'm currently working on DAB and I found some problems by doing this, e.g. in [1] there is a frequency dependent phase offset due to an inaccurate the sampling frequency. Regards, Andreas [1] http://people.ee.ethz.ch/~andrmuel/tmp/phase-vs-subcarrier.png _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
