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From: | Ekko |
Subject: | Re: [Discuss-gnuradio] transmit file with qpsk on e310 |
Date: | Sun, 29 Nov 2015 12:53:36 +0800 |
Hi,First you should have a look at the PSK demodulation tutorial : http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorial_PSK_Demodulation .It uses a Polyphase Clock Sync between the receiver and the constellation decoder.Alternatively, you can use the Constellation Receiver which is a Constellation Decoder with freq and phase correction.But if you want a more simple solution, the DPSK Mod/DPSK Demod blocks seems like the best solution.When your receiver works, you can have a look at the Packet Operators to send delimited messages.Good luck.Le sam. 28 nov. 2015 à 9:55, Ekko <address@hidden> a écrit :
hello alli want to transmit a file with the way of QPSKthis is my send grcfile source----repack bits-----chunks to symbol-----multile const------uhd_inkthis is my receive grcuhd_source-----constellation decoder-----repack bits-----file sinknext is the "qt gui constellation sink" of the oupotput ofchunks to symbol in the send
next is the output of UHD_source in recieve "qt frequence sink""qt gui constellation sink"
in this picture ,i think the recieve got the signal,but i do not know the constellation mean,next is the set of my uhd_source and uhd_sinksourcesink
my problem is that my recieve file is completely different with the source filei use simulation way (no uhd),the recieve is same as source,so i think there is some block needed between the constellation coder and uhd_source,for example the sync blockhope someone knows how to solve this sync problem or how to transmit a file with QPSK on e310 with the antennathank you---Ekko
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