Title :
CTH07-1: Effect of Feedback Delay on Multi-Antenna Limited Feedback for Temporally-Correlated Channels
Author :
Huang, Kaibin ; Mondal, Bishwarup ; Heath, Robert W., Jr. ; Andrews, Jeffrey G.
Author_Institution :
Wireless Networking & Commun. Group, Univ. of Texas at Austin, Austin, TX
fDate :
Nov. 27 2006-Dec. 1 2006
Abstract :
A novel method based on Markov chain theory is proposed for analyzing the effect of feedback delay on a transmit beamforming system with limited feedback. Using this method, the ergodic capacity with delayed feedback of channel state information is derived. The capacity gain with respect to the case of no feedback is shown to decrease at least exponentially with the feedback delay. From these results, useful design guidelines can be derived for choosing system parameters including the vehicular speed and the tolerable feedback delay.
Keywords :
Markov processes; antenna arrays; channel capacity; correlation methods; delays; feedback; wireless channels; Markov chain theory; channel state information; ergodic channel capacity; feedback delay effect; multi-antenna limited feedback; temporally-correlated channels; transmit beamforming system; Array signal processing; Base stations; Channel state information; Delay effects; Fading; Heat engines; Resistance heating; Shape; State feedback; Vector quantization;
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.2006.70
