DocumentCode :
660004
Title :
Minimizing the Effect of Feedback Delay in a Multi-User System through Adaptive Feedback Scheduling
Author :
Bhamri, Ankit ; Hamalainen, Jyri ; Kaltenberger, Florian ; Knopp, Raymond
Author_Institution :
Eurecom, Sophia-Antipolis, France
fYear :
2013
fDate :
2-5 Sept. 2013
Firstpage :
1
Lastpage :
5
Abstract :
In this paper, we analyze the downlink performance of a multi-user system consisting of mobile users with wide range of velocity. We categorize these users into different groups on the basis of their velocity range and study the impact of feedback delay on each group for closed-loop transmit beamforming. Based on this analysis, we propose an adaptive feedback-scheduling algorithm to minimize the effect of feedback delay on the performance of the system. We derive generalized performance measuring expressions for the proposed algorithm and carry out simulations to validate the analysis.
Keywords :
adaptive signal processing; array signal processing; delays; feedback; mobile radio; scheduling; adaptive feedback-scheduling algorithm; closed-loop transmit beamforming; downlink performance analysis; feedback delay effect minimization; mobile user; multiuser system; Antenna feeds; Array signal processing; Delays; Scheduling algorithms; Signal to noise ratio; Transmitting antennas; Upper bound;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2013 IEEE 78th
Conference_Location :
Las Vegas, NV
ISSN :
1090-3038
Type :
conf
DOI :
10.1109/VTCFall.2013.6692284
Filename :
6692284
Link To Document :
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