GFSK Mod

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Revision as of 14:46, 21 July 2021 by Solomonbstoner (talk | contribs) (Add example flowgraph for GFSK Mod block)
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Hierarchical block for Gaussian Frequency Shift Key (GFSK) modulation.

The input is a byte stream (unsigned char) and the output is the complex modulated signal at baseband.

Parameters

Samples/Symbol
Samples per baud >= 2 (integer)
Sensitivity
Given to the Frequency Mod
BT
Gaussian filter bandwidth * symbol time (float)
Verbose
Print information about modulator?
Log
Print modulation data to files?
Unpack
Unpack input byte stream?

Example Flowgraph

The flowgraph below shows an example of the GFSK Mod and GFSK Demod blocks in action. We GFSK modulate 9-bit long bit stream '000111011', and then GFSK demodulate it. Then we compare the two bit streams to make sure that they are the same.

Gfsk mod and demod.png

When the flowgraph runs, we see that the red and blue signals are the same, meaning that the bit streams before and after the GFSK modulation and demodulation are the same.

Gfsk mod and demod in action.png


Source Files

Python files
[1]
Block definition
[2]