Shannon Revisited: New Separation Principles for Wireless Multimedia
Event details
| Date | 15.09.2010 |
| Hour | 13:00 |
| Speaker | Prof. Mihaela van der Schaar, UCLA |
| Location | |
| Category | Conferences - Seminars |
Delay-sensitive communications (e.g. multimedia transmission) are booming over a variety of wireless and wired networks. However, the concepts and methods that have dominated multi-user communication and networking research in recent years are not well suited for efficiently designing and implementing systems aimed at supporting delay-sensitive applications. The problem is that this application class demands new theories, methods and metrics as compared to classical information theory (which ignores delay requirements and complexity limitations), queuing theory (which only considers stationary traffic and service processes and does not optimally control the queues), stochastic control theory (which does not exploit the structure of specific interaction scenarios to improve the devices’ ability to adapt online as well as to reduce their complexity) and online learning theory (which often suffers from slow convergence rates.
In this talk, I will present a new foundation for systematically designing and optimizing multi-user wireless networks and distributed systems aimed at supporting delay-critical applications. This foundation rests on three separation principles, which enable devices to autonomously (i) minimize the delay experienced by the various delay-critical applications sharing the network infrastructure; (ii) learn to operate optimally in time-varying and a priori unknown environments by deploying low-complexity online learning algorithms; and (iii) coordinate with each other in an informationally-decentralized manner in order to optimally utilize the available network resources and maximize the overall network performance.
Practical information
- General public
- Free
Contact
- Prof. Frossard