need a topic for paperpresentation

hello...i am a student of electronics tele communication(3rd year)....i need a topic for paper presentation.I know some topics like RECENT TRENDS IN WIRELESS COMMUNICATION SYSTEM,4G technology,fibre optics..but i am confused which one is better..or pls suggest better latest topic..also pls suggest the sources from where i will get proper information..plz its my first paper presentation.