i want to transmit a file with the way of QPSK
this is my send grc
file source----repack bits-----chunks to symbol-----multile const------uhd_ink
this is my receive grc
uhd_source-----constellation decoder-----repack bits-----file sink
next is the "qt gui constellation sink" of the oupotput of
chunks 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_sink
source
sink
my problem is that my recieve file is completely different with the source file
i 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 block
hope someone knows how to solve this sync problem or how to transmit a file with QPSK on e310 with the antenna
thank you
---Ekko