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From: | Rafik ZITOUNI |
Subject: | Re: [Discuss-gnuradio] (no subject) |
Date: | Tue, 4 Jul 2017 11:20:30 +0200 |
Hi Rafik!
So, what's wrong with the BER and the SNR estimate?
Best regards,
Marcus
On 07/03/2017 11:29 PM, Rafik ZITOUNI wrote:
Dear all,
I translate the /gr-digital/examples/narrowband/digital_bert_tx.py and the /gr-digital/examples/ narrowband/digital_bert_rx.py python source codes to GRC flow graphs. The objective is to get more graphical possibilities with a GRC. My flow graph gives a fine result of BER and SNR for DBPSK modulation. The problem is with the rotating points of my constellation. I think that the rotation of my view comes from a lack of frequency synchronization, but why I obtained a correct BER and SNR?
You find attached to this message a constellation view obtained by my flow graph.
Please could you explain me this result or give an advice to improve the obtained result?
Regards,
--
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BPSKConstellation.png
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