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[Discuss-gnuradio] OFDM demodulation problem / example video

From: Jens Elsner
Subject: [Discuss-gnuradio] OFDM demodulation problem / example video
Date: Mon, 3 Apr 2006 12:55:14 +0200
User-agent: Mutt/1.3.28i

Here is my little problem in animated frames.

What you are seeing is already DQPSK. Displayed is the signal
constellation for one OFDM frame, 75 symbols. The code was posted earlier.

The problem: The (differential!) signal constellation has a constant phase 
offset for each OFDM symbol. Why? What to do about it?


Attachment: ofdm_dqpsk.gif
Description: GIF image

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