Title :
Structure of Optimal Input Covariance Matrices for MIMO Systems with Covariance Feedback under General Correlated Fading
Author :
Igor Bjelakovic;Holger Boche
Author_Institution :
Heinrich-Hertz-Chair for Mobile Communications, Berlin University of Technology, Werner-von-Siemens-Bau (HFT 6), Einsteinufer 25, 10587 Berlin, Germany. Email: igor.bjelakovic@mk.tu-berlin.de
fDate :
7/1/2006 12:00:00 AM
Abstract :
We describe the structure of optimal Input covariance matrices for single user multiple-input/multiple-output (MIMO) communication system with covariance feedback and for general correlated fading. Our approach is based on the novel concept of right commutant and recovers previously derived results for the Kronecker product models. Conditions are derived which allow a significant simplification of the optimization problem
Keywords :
"Covariance matrix","MIMO","Feedback","Fading","Mobile communication","Communication systems","Channel state information","Transmitters","Receiving antennas","Quantum entanglement"
Conference_Titel :
Information Theory, 2006 IEEE International Symposium on
Print_ISBN :
1-4244-0505-X
Electronic_ISBN :
2157-8117
DOI :
10.1109/ISIT.2006.261886
