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Re: [Discuss-gnuradio] OFDM results.

From: Andreas Müller
Subject: Re: [Discuss-gnuradio] OFDM results.
Date: Wed, 04 Jun 2008 12:48:00 +0200
User-agent: Thunderbird (X11/20080506)

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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