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-rw-r--r--usrp2/sdr_lib/hb_interp.v17
1 files changed, 17 insertions, 0 deletions
diff --git a/usrp2/sdr_lib/hb_interp.v b/usrp2/sdr_lib/hb_interp.v
index d16807e15..deb4fe056 100644
--- a/usrp2/sdr_lib/hb_interp.v
+++ b/usrp2/sdr_lib/hb_interp.v
@@ -1,3 +1,20 @@
+//
+// Copyright 2011 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+
// First halfband iterpolator
// Implements impulse responses of the form [A 0 B 0 C .. 0 H 0.5 H 0 .. C 0 B 0 A]
// Strobe in cannot come faster than every 4th clock cycle,