Date Added: Aug 2009
As the title suggests, the present dissertation is focused on the physical layer security in wireless networks. The concept of communication security is linked to two main desired features. The first of these is the system reliability, which means that a certain message (encoded for transmission and transmitted over a wireless channel) intended for a specific user (or "Legitimate Receiver"), should be reliably received by that user. In practical terms, the legitimate receiver's decoding error should satisfy an acceptable specification. The "Enemy" of system reliability is called a jammer. The purpose of a jammer is solely to disrupt the process of communication by increasing the legitimate receiver's probability of decoding error, and/or by causing "Reliability Outage".