Title :
WLC21-2: Joint Antenna Selection in Space-Time Coded MIMO Systems with Outdated CSIT
Author :
Luo, Roderick T. ; Cheng, Roger S. ; Lau, Vincent K N
Author_Institution :
Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong
fDate :
Nov. 27 2006-Dec. 1 2006
Abstract :
Previous works on joint, both transmit and receive, antenna selection in MIMO systems have placed the computation burden to the receiver side, where perfect channel state information (CSI) at the receiver is assumed and the selected transmit antenna indices are sent back to the transmitter. This solution might not be practical, since with bursty packet transmission, the selected antenna subset may no longer be a good choice at the instant of actual transmission. In light of this, we formulate the problem such that the transmitter is performing the selection based on the CSI estimated a while back, or outdated CSI. A space-time coded MIMO channel with correlated flat fading and joint antenna selection is considered. Our closed-form optimal selection criterion incorporating the outdatedness of the CSI outperforms the existing solutions which treat the outdated CSI as the actual CSI.
Keywords :
MIMO communication; antennas; fading channels; space-time codes; channel state information; correlated flat fading; joint antenna selection; space-time coded MIMO systems; Channel state information; Costs; Fading; MIMO; Radio frequency; Radio transmitters; Receiving antennas; Space technology; Transmitting antennas; Wireless communication;
Conference_Titel :
Global Telecommunications Conference, 2006. GLOBECOM '06. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0356-1
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2006.734
