Title :
On the degrees of freedom of time correlated MISO broadcast channel with delayed CSIT
Author :
Kobayashi, Mari ; Yang, Sheng ; Gesbert, David ; Yi, Xinping
Author_Institution :
SUPELEC, Gif-sur-Yvette, France
Abstract :
We consider the time correlated MISO broadcast channel where the transmitter has partial knowledge on the current channel state, in addition to delayed channel state information (CSI). Rather than exploiting only the current CSI, as the zero-forcing precoding, or only the delayed CSI, as the Maddah-Ali-Tse (MAT) scheme, we propose a seamless strategy that takes advantage of both. The achievable degrees of freedom of the proposed scheme is characterized in terms of the quality of the current channel knowledge.
Keywords :
MIMO communication; broadcast channels; precoding; radio transmitters; wireless channels; MAT scheme; Maddah-Ali-Tse scheme; degree of freedom; delayed CSIT; delayed channel state information; time correlated MISO broadcast channel; transmitter; zero-forcing precoding; Channel estimation; Fading; Interference; MIMO; Multiplexing; Receivers; Transmitters;
Conference_Titel :
Information Theory Proceedings (ISIT), 2012 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
978-1-4673-2580-6
Electronic_ISBN :
2157-8095
DOI :
10.1109/ISIT.2012.6283967