diff --git a/user_space/arbitrary_iq_gen/single_carrier_gen.m b/user_space/arbitrary_iq_gen/single_carrier_gen.m
index 67b5cfb..a8e9a5b 100644
--- a/user_space/arbitrary_iq_gen/single_carrier_gen.m
+++ b/user_space/arbitrary_iq_gen/single_carrier_gen.m
@@ -1,4 +1,6 @@
-% xianjun.jiao@imec.be
+% Author: Xianjun Jiao (xianjun.jiao@imec.be; putaoshu@msn.com)
+% SPDX-FileCopyrightText: 2023 UGent
+% SPDX-License-Identifier: AGPL-3.0-or-later
 
 function single_carrier_gen(carrier_freq, num_iq)
 if exist('carrier_freq', 'var')==0 || isempty(carrier_freq)