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From: | Kyeong Su Shin |
Subject: | Re: [Discuss-gnuradio] PSK modulation and demodulation from gnu radio tutorial. |
Date: | Sat, 29 Jun 2019 10:13:11 +0000 |
Hello Atiqur:
If all you want is writing a simple DQPSK transceiver, then you can use a Constellation Decoder block, as like in the attached file. I cannot comment much on the problems that you are experiencing, as I have not looked on the source codes that you are trying to build.
Please note that you may have to change numbers in the "delay" block at the end of the flow graph to get a correct plot. This is because the synchronizer and the equalizer blocks in the flow graph may end up adding a few numbers to the stream, and introduce "time differences" between the two streams.
Also, please add the mailing list ('discuss-gnuradio.gnu.org') as a recipient when replying to the e-mail thread, as this discussion could useful for other people as well.
Regards, Kyeong Su Shin 보낸 사람: Md. Atiqur Rahman <address@hidden>
보낸 날짜: 2019년 6월 29일 토요일 오전 5:23:59 받는 사람: Kyeong Su Shin 제목: Re: [Discuss-gnuradio] PSK modulation and demodulation from gnu radio tutorial. Hello
Kyeong,
First of thank you so much for your quick reply. From
the tutorial one, I am following all section. Unfortunately, from gnuradio with python, I am facing problems. I made the multiply block and its working but when I try to make the qpsk_demod_py_cb
it is not working. I have tried to do the same tutorial so many times. Then I shifted to do the oot module by c++. Sometime in the tutorial, some file name changed. Like tutorial with c++ I am working now, my lib/ folder files like .h and .cc edited successfully
but for making test: in my python/ folder qa_my_qpsk_demod_cd.py is present but in the tutorial it's named is qa_qpsk_demod.py!!!! However, I made the change .xml file and .py as suggested but still not working. When I do the make test it says tutorial passed
but qa_qpsk_demod failed! I make the test and it failed again and again. Honestly, I don't know what I am doing wrong!
I do even see the source code from github and yet their file name is also changed!
All I wanted to do the generating the PSK signal (transceiver). I have failed for the last 3 weeks! Please would you give me some solutions here? I will
be so grateful. Thank you.
Sincerely,
Atiqur
On Fri, Jun 28, 2019 at 4:32 PM Kyeong Su Shin <address@hidden> wrote:
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stage6_fixed.grc
Description: stage6_fixed.grc
sc.png
Description: sc.png
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