Hi
Im working on a stanag 4285 transmitter. To validate my work, Im trying
to record my transmitter output and play it in Sigmira (a SDR that
manage Stanag 4285).As I didnt get my USRP yet, Im using a
wavfile_sink. See my code bellow.
About my code :
self.tx=Txpath_ss(self.taille,s,1) is
Hi
Thanks for answering my questions.
I changed my code, it works now.
I will try the random interleaver, to see how it works. But in the end I
will need a super control over it. I need something that look like that :
http://www.mathworks.com/access/helpdesk/help/toolbox/commblks/ug/fp60504.html
Gr-trellis ; convolutional code and convolutionnal interleaver.
Hi,
I'm trying to design an error correction flow graph that would use a
convolutional encoder and a convolutional interleaver. I searched in
gr-trellis for the appropriate blocks, but I have a bunch of questions
about how to use
Hi,
Thanks for taking the time to reply. I changed my code to print the data
after the constuctor. But it is still not working. I guess, I 'm doing
something else wrong.
The changed code :
#My top block
from gnuradio import gr
from
Hi
I'm trying to make a very simple hier block. ( see the code below). When I
execute my top block i get no error, but the data seems to never enter the
hier block ( the print-line prints : ()). What am I doing wrong?
my hier block#
from gnuradio import gr
class
Hi
I'm facing 2 problemes :
- I'm trying to design a flow graph that creat a transmission frame from a
input file.
The frame must be like this :
[ (sync bytes x80)(data bytes x32)(0x16)(data bytes x32)(0x16)(data bytes
x32)(0x16)(data bytes x32) ]
My idea is to use vector/stream converters, to
Salut!
I think our issues are related to the synchronizations parameters (Costa's
loop and MM). It seems that they must be chosen very carefully,
especially costas_alpha and gain_mu.
In order to choose them, I plugged a constellation sink into my modulator
using GRC. As the constellation sink is
Thanks for the tips!
I was a bit confused with the concept of packet, It is much clearer now.
I took your advices. I have, now, a simulation that works, at least for
dbpsk. ( dqpsk and d8psk, still give odd output).
Just to let the GNUradio community know. My final aim is to realise a hf
Hi,
I'm new to gnu radio. To get familiar with this project, I'm trying to
simulate a dbpsk link.
My flow graph look like this :
stream of bits = Modulation = frequency up translation = Noisy channel
= frequency down translation = Demodulation
But, there is something going wrong!! If the input
