Minimizing the effect of feedback delay in a multi-user system through adaptive feedback scheduling

Bhamri, Ankit; Hämäläinen, Jyri; Kaltenberger, Florian; Knopp, Raymond
VTC Fall 2013, IEEE 78th Vehicular Technology Conference, 2-5 September 2013, Las Vegas, USA

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.


DOI
Type:
Conference
City:
Las Vegas
Date:
2013-09-02
Department:
Communication systems
Eurecom Ref:
4084
Copyright:
© 2013 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

PERMALINK : https://www.eurecom.fr/publication/4084