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Delay-Limited Cooperative Communication with Reliability Constraints in Wireless Networks

Speaker: Rahul Urgaonkar
USC PhD. StudentAbstract: We investigate optimal resource allocation for delay-limited cooperative communication in mobile ad-hoc networks. Motivated by real-time applications that have stringent delay constraints, we develop dynamic cooperation strategies that make optimal use of network resources to achieve a target outage probability (reliability) for each user subject to average power constraints. Using the technique of Lyapunov optimization, we first present a general framework to solve this problem and then derive quasi-closed form solutions for several cooperative protocols proposed in the literature (such as Amplify-and-Forward, Decode-and-Forward, etc.). Our work is the first to treat the problem of delay-limited cooperative communication with reliability constraints in a stochastic network characterized by fading channels, node mobility, and random packet arrivals, where opportunistic cooperation decisions are required.Biography: Rahul Urgaonkar obtained the B.Tech. degree in Electrical Engineering from the Indian Institute of Technology (IIT) Bombay in 2002 and the M.S. degree in Electrical Engineering from the University of Southern California, Los Angeles in 2005. He is currently a PhD student in Electrical Engineering at USC. His research interests are in the areas of stochastic network optimization, resource allocation, and scheduling in next generation Wireless Networks.Relevant papers: R. Urgaonkar and M. J. Neely, "Delay-limited Cooperative Communication with Reliability Constraints in Wireless Networks," IEEE INFOCOM, Mini-conference, Rio de Janeiro, Brazil, April 2009Link: http://www-scf.usc.edu/~urgaonka/papers/coop_comm_infocom09.pdfHost: Michael Neely, mjneely@usc.edu, EEB 520, x03505

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 539

Audiences: Everyone Is Invited

Contact: Gerrielyn Ramos