Hi all,
I am using QPSK Mod and demod I have issue of how to synchronize
my
frame means how to remove delays from my received data in using GRC
block
my flow graph is attached with this mail. I am trying to use packet
encoder
and decoder for frame synchronization but it is not working with my mod
and
demod.
Regards,
Irfan U.
On 19.05.2014 13:23, Irfan U. wrote:
Hi all,
I am using QPSK Mod and demod I have issue of how to synchronize
my frame means how to remove delays from my received data in using GRC
block my flow graph is attached with this mail. I am trying to use
packet encoder and decoder for frame synchronization but it is not
working with my mod and demod.
Hey Irfan,
I’m not sure phase is preserved in your flow graph. I recommend you
start with a few components and slowly add things until you realize
where the problem lies. Make use of the GUI sinks to check out signals
and constellations.
Martin
On Tue, May 20, 2014 at 5:06 AM, Martin B.
[email protected]wrote:
Hey Irfan,
I’m not sure phase is preserved in your flow graph. I recommend you start
with a few components and slowly add things until you realize where the
problem lies. Make use of the GUI sinks to check out signals and
constellations.Martin
Indeed. One of the reasons we often use differential encoding.
Tom