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
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