Berna, Gedik2008-05-162008-05-162008-05-162008-06http://hdl.handle.net/10012/3688Cooperative diversity has been proposed as a powerful means to enhance the performance of high-rate communications over wireless fading channels. It realizes spatial diversity advantages in a distributed manner where two or more nodes share their antennas to mimic a virtual antenna array.enwireless communicationsChannel estimation for Amplify and Forward ChannelsMaster ThesisElectrical and Computer Engineering