Unquantized and uncoded channel state information feedback in multiple-antenna multiuser systems

Unquantized and Uncoded Channel State Information Feedback on Wireless Channels

In this paper we consider a system where a mobile terminal obtains the downlink channel state information (CSI) and feeds it back to the base station using an uplink feedback channel. If the downlink channel is an independent Rayleigh fading channel, then the CSI may be viewed as an output of a complex independent identically distributed Gaussian source. Further, if the uplink feedback channel ...

Channel State Information in Multiple Antenna Systems

This dissertation is dedicated to my wife Jijie for her patience, love, encouragement, and support. iii ACKNOWLEDGEMENTS I would like to thank my advisor, Prof. Douglas B. Williams for being a fantastic advisor. Prof. Williams always has great suggestions about research. I have always been greatly inspired by his research style, intellectual aspects, and insights. He has also been a good mentor...

Multiple Antenna Wireless Systems and Channel State Information

OF THE DISSERTATION Multiple Antenna Wireless Systems and Channel State Information by Dragan Samardzija Dissertation Director: Professor Narayan B. Mandayam The use of multiple antennas in wireless systems have been shown to provide tremendous capacity gains. A key factor in realizing such gains is the knowledge of the channel state information (CSI) at the receiver and transceiver. In this th...

Utilizing multiuser diversity for multiple antenna systems

Capacity of multiple-antenna systems with both receiver and transmitter channel state information

The capacity of multiple-antenna systems operating in Rayleigh flat fading is considered under the assumptions that channel state information (CSI) is available at both transmitter and receiver, and that the transmitter is subjected to an average power constraint. First, the capacity of such systems is derived for the special case of multiple transmit antennas and a single receive antenna. The ...