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Journal articles
A consensus approach to PI gains tuning for quality-fair video delivery
Abstract : In this paper we provide necessary and sufficient conditions for 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 (PI) 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 PI gains tuning problem. We demonstrate the effectiveness of our method in simulations, where we compare it to pre-existing approaches.
https://hal-centralesupelec.archives-ouvertes.fr/hal-01576615
Contributor : Michel Kieffer Connect in order to contact the contributor
Submitted on : Wednesday, August 23, 2017 - 3:27:50 PM
Last modification on : Wednesday, June 9, 2021 - 10:00:17 AM
Contributor : Michel Kieffer Connect in order to contact the contributor
Submitted on : Wednesday, August 23, 2017 - 3:27:50 PM
Last modification on : Wednesday, June 9, 2021 - 10:00:17 AM
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