Title :
Adaptive downlink multi-user MISO transmission systems exploiting statistical channel state information
Author :
Xiao Li ; Liulei Zhou ; Jue Wang ; Shi Jin ; Xiqi Gao
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
In this paper, we investigate the ergodic sum rate for multiple-input single-output(MISO) downlink multi-user systems. We assume that each user has perfect channel state information( CSI), while the base station has only statistical CSI of all users. We derive an approximation of the ergodic sum rate. Then, new scheduling and statistical beamforming space division multiple access(SDMA) transmission are derived through maximizing the approximation. The proposed algorithm are shown to perform well.
Keywords :
MIMO communication; space division multiple access; MISO downlink multiuser system; SDMA transmission; adaptive downlink multiuser MISO transmission system; ergodic sum rate; multiple-input single-output downlink multiuser system; statistical CSI; statistical beamforming space division multiple access; statistical channel state information;
Conference_Titel :
Communications and Networking in China (CHINACOM), 2012 7th International ICST Conference on
Conference_Location :
Kun Ming
Print_ISBN :
978-1-4673-2698-8
Electronic_ISBN :
978-1-4673-2697-1
DOI :
10.1109/ChinaCom.2012.6522592
