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A consensus approach to PI gains tuning for quality-fair video delivery.

Authors :
Dal Col, Laura
Tarbouriech, Sophie
Zaccarian, Luca
Kieffer, Michel
Source :
International Journal of Robust & Nonlinear Control. Jun2017, Vol. 27 Issue 9, p1547-1565. 19p.
Publication Year :
2017

Abstract

In this paper, we provide necessary and sufficient conditifor the quality-fair delivery of multimedia contents to mobile users. We control the encoding rates and the transmission rates of the video streams, delivered through a limited capacity channel. This problem is cast into a problem of consensus among identical discrete-time linear systems, connected through a network with fixed and fully connected topology. The information exchanged over the communication network is the measure of the quality of the encoded videos. Based on a consensus result for identical linear systems, we reduce the problem of designing the proportional and integral gains of the encoding rate and transmission rate controllers to a linear static output feedback. We propose an iterative design technique based on linear matrix inequalities to solve the corresponding nonconvex problem, thereby providing a constructive optimality-based approach to the proportional and integral gains tuning problem. We demonstrate the effectiveness of our method in simulations, where we compare it with pre-existing approaches. Copyright © 2017 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10498923
Volume :
27
Issue :
9
Database :
Academic Search Index
Journal :
International Journal of Robust & Nonlinear Control
Publication Type :
Academic Journal
Accession number :
122899536
Full Text :
https://doi.org/10.1002/rnc.3739