GMSK Demod

Hierarchical block for Gaussian Minimum Shift Key (GMSK) demodulation.

The input is the complex modulated signal at baseband.

The output is a stream of bits packed 1 bit per byte (the LSB)

Parameters

Samples/Symbol

Samples per baud

Gain Mu

Controls rate of mu adjustment

Mu

Fractional delay [0.0, 1.0]

Omega Relative Limit

Sets max variation in omega

Freq Error

Bit rate error as a fraction

Verbose

Print information about modulator?

Log

Print modulation data to files?

Example Flowgraph

This is an example flowgraph modified from https://github.com/gnuradio/gnuradio/blob/main/gr-channels/examples/demo_gmsk.grc to use a GMSK Demod block

Source Files

Python files

[1]

Block definition

[2]