diff --git a/ploti.m b/ploti.m
index f95e0d3..6c211e5 100644
--- a/ploti.m
+++ b/ploti.m
@@ -1,3 +1,10 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Project code file for ECE 257B SP2018                                   %
+% Author: Yu-Jen Ku, Xueshi Hou                                            %
+%         Department of Electrical and Computer Engineering,              %
+%         University in San Diego, California, USA                        %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
 function ploti(Target,k)
 X = 1:size(Target,2);
 num_t = size(Target,1);
@@ -13,4 +20,4 @@ for i = 1:num_t
 plot(X,angle(Target(i,:)));
 end
 
-end
+end
\ No newline at end of file