H.İnaltekin; "Topics on Wireless Network Design:..." Jan.10,2007,13:40
  • FENS
  • H.İnaltekin; "Topics on Wireless Network Design:..." Jan.10,2007,13:40

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Faculty of Engineering and Natural Sciences
FENS SEMINARS


Topics on Wireless Network Design: Interference Analysis for Wireless Networks and Game Theoretic Wireless Network Deployment

Hazer İnaltekin
Cornell University

 

Abstract:
This talk will focus on two important issues, both in terms of practical and theoretical point of views, arising in the design of wireless networks. In the first part of the presentation, utility of the unbounded path-loss model G(x) = 1/xª in wireless networking research problems will be addressed. It is known that G(x) is not valid for small values of x due to the singularity at 0. G(x) will be compared to a more realistic bounded path-loss model, showing that the effect of the singularity on the total network interference power is significant and cannot be disregarded.
 

In the second part of the presentation, the behavior of  the selfish service providers in the form of IP sinks providing high-speed IP access will be analyzed. Service providers compete for mobile users by adjusting the price they charge for their services. Their aim is to maximize the total collected profit. Mobile users are also selfish choosing the service  provider offering the best quality of service and price combination. As the service providers come closer to each other, the existence of three critical phase transition in their behavior is shown. Depending on the separation between them, there may exist a unique Nash equilibrium, or a continuum of Nash equilibria, or no Nash equilibrium. The pricing strategies of service providers at Nash equilibria will be completely characterized. It will also be shown that the total social welfare in the presence of selfish providers is close to the maximum social welfare that can reached through non-selfish optimization. In other words, Price of Anarchy for  this game is small.

Biography:
Hazer İnaltekin received his B.S. degree with High Honors in electrical and electronics engineering from Bogazici University, Istanbul, Turkey, in 2001. After completing his undergraduate studies in Turkey, he started his M.S./Ph.D. program in electrical and computer engineering department of Cornell University. He earned his M.S. and Ph.D. degrees both from Cornell University in April 2005 and in May 2006, respectively. He is now postdoctoral research associate in Wireless Intelligent Systems Laboratory at Cornell University. His research interests include information theory, game theory, wireless communications, wireless networks and financial mathematics. He can be contacted at hi27@cornell.edu.

January 10, 2007, 13:40, FENS G032