Thursday, February 14, 2019

[Discuss-gnuradio] GFSK + STREAM MUX working wrong

Hello everyone,

I am creating signal with use of STREAM MUX. I want 128 samples of constant = 0 and two bytes modulated with GFSK mod. 2 bytes and 8 samples/bit.... 2*8*8 = 128.
(128, 128) these are the two values in the STREAM MUX.

https://ctrlv.cz/XR97

As you can see I modulate vector 255 and 0. Binary it is 11111111 00000000.
But after quadrature demod (picture 2 - top graph). I get 00111111 11000000 as a result.

https://ctrlv.cz/9vgX


Do you have any idea what is wrong? And how to solve this problem? 

Thank you.

Petr





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