License the project under GPL-3.0-or-later

README.md

 # pyPlutoDPD
 Pre-Distortion for Linearization of RF power amplifier in python using ADALM PLUTO.
 
+This program is released under GPL version 3 or any later version.
+
 ## Overview
 The pyPlutoDPD is a python implementation of Digital Pre-Distortion, a most used technique to linearize the distortions introiduced by the RF Power Amplifiers.
 

commonFunctions.py

+##############################################################################
+#
+# Copyright (C) 2024 XLIM-Laboratory UMR-CNRS, Rapid.Space International
+#
+# This program is free software: you can Use, Study, Modify and Redistribute
+# it under the terms of the GNU General Public License version 3, or (at your
+# option) any later version, as published by the Free Software Foundation.
+# 
+# You can also Link and Combine this program with other software covered by
+# the terms of any of the Free Software licenses or any of the Open Source
+# Initiative approved licenses and Convey the resulting work. Corresponding
+# source of such a combination shall include the source code for all other
+# software used.
+# 
+# This program is distributed WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# 
+# See COPYING file for full licensing terms.
+#
+##############################################################################
+
 import numpy as np
 import matplotlib.pyplot as plt
 from scipy.signal import get_window

pyPlutoDPD.py

 #!/usr/bin/env python
 # coding: utf-8
 
+##############################################################################
+#
+# Copyright (C) 2024 XLIM-Laboratory UMR-CNRS, Rapid.Space International
+#
+# This program is free software: you can Use, Study, Modify and Redistribute
+# it under the terms of the GNU General Public License version 3, or (at your
+# option) any later version, as published by the Free Software Foundation.
+# 
+# You can also Link and Combine this program with other software covered by
+# the terms of any of the Free Software licenses or any of the Open Source
+# Initiative approved licenses and Convey the resulting work. Corresponding
+# source of such a combination shall include the source code for all other
+# software used.
+# 
+# This program is distributed WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# 
+# See COPYING file for full licensing terms.
+#
+##############################################################################
+
 # # pyPlutoDPD
 # Pre-Distortion for Linearization of RF power amplifier in python using ADALM PLUTO.
 
 # ## Overview
 # The pyPlutoDPD is a python implementation of Digital Pre-Distortion, a most used technique to linearize the distortions introiduced by the RF Power Amplifiers.
 #
-# This has been developed under python by: </br>
+# This has been developed under python by:
 # - Smail Bachir, University of Poitiers, XLIM-Laboratory UMR-CNRS 7252
 #
 # in collaboration with: