fixed a compilation issue in pbchsim.c. Protected configuring ue_dlsch...

fixed a compilation issue in pbchsim.c. Protected configuring ue_dlsch reception upon false DCI detection. changed visualization of channel estimates in UE signal scope

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7679 818b1a75-f10b-46b9-bf7c-635c3b92a50f