Re: [Discuss-gnuradio] Frame delay synchronization issue

[Tom Rondeau]

On Tue, May 20, 2014 at 5:06 AM, Martin Braun <address@hidden> wrote:

On 19.05.2014 13:23, Irfan Ullah 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

Indeed. One of the reasons we often use differential encoding.

Tom