Title :
On the Performance of MIMO Systems in Presence of Imperfect Channel Information
Author :
Sun, Kai ; Huang, Wei ; Yie, Yong ; Li, Shuhua
Author_Institution :
Coll. of Electron. Inf. Eng., Inner Mongolia Univ., Hohhot, China
Abstract :
Impact of the channel estimation error and feedback delay on the throughput of multi-input and multi-output (MIMO) downlink systems is investigated. The dynamic transmission schemes based on TDMA and SDMA with zero-forcing beamforming (ZFBF) are described and their associated system throughput are compared. It is shown that the system performance is sensitive to the channel estimation error, and degrades significantly as variance of estimation error increases.
Keywords :
MIMO communication; array signal processing; channel estimation; error analysis; space division multiple access; time division multiple access; MIMO system; SDMA; TDMA; channel estimation error; dynamic transmission scheme; feedback delay; imperfect channel information; multiple-input multiple-output downlink system; zero-forcing beamforming; Channel estimation; Downlink; Estimation error; Interference; MIMO; Signal to noise ratio; Time division multiple access;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5601346
