Wireless networks in non-ergodic multipath fading : capacity and relaying performance analysis

OF THE DISSERTATION Wireless Networks in Non-Ergodic Multipath Fading: Capacity and Relaying Performance Analysis by Yoav Nebat Doctor of Philosophy in Electrical Engineering (Communication Theory and Systems) University of California, San Diego, 2007 Professor Laurence B. Milstein, Chair Professor Rene L. Cruz, Co-Chair Wireless channels experience random multipath fading. Reliable and efficient communication in slow-varying channel fading conditions may be challenging due to limited time diversity. This problem may be alleviated by leveraging network path diversity, which is a form of distributed spatial diversity. Utilization of relays and node cooperation in wireless communication have been proposed in recent years to achieve a certain level of spatial diversity. Cooperative diversity is mostly needed when other sources of diversity, namely frequency diversity, time diversity and conventional spatial diversity, are limited. Under such conditions, the coherence time of the channel is likely to be sufficiently large to allow local channel state information to