Group Meetings Schedule

Archives of Previous Meetings

• 2007-2008: Autumn 2007, Winter 2008, Spring 2008
• 2006-2007: Autumn 2006, Winter 2007, Spring 2007, Summer 2007
• 2005-2006: Autumn 2005, Winter 2006, Spring 2006
• 2004-2005: Autumn 2004
• 2002-2003: Autumn 2002, Winter 2003, Spring 2003
• 2001-2002: Autumn 2001, Winter 2002
• 2000-2001: Autumn 2000, Winter 2001, Spring 2001, Summer 2001

Current Meetings At a Glance

On the design of secure and efficient wireless network

Lifeng Lai

ABSTRACT: In this talk, I will address two issues in wireless communications: security and spectrum efficiency. In the first part, I will show that some characteristics of wireless channels, such as channel fading, can be utilized to enhance the security. I will then show that these results can then be utilized to design efficient fraud detection algorithms. In the second part of the talk, I will discuss how we can use tools from machine learning to significantly increase the spectrum efficiency of wireless networks. More specifically, medium access control problem in cognitive radio is considered. Optimal as long as lower complexity order optimal medium access protocols are developed. Finally, I will briefly discuss how to apply the insights, obtained from the study in wireless security, on the biometric security systems.


BIO: Lifeng Lai received his B. Eng and M. Eng from Zhejiang University, China in 2001 and 2004 respectively, both in Information Science and Electronic Engineering. He obtained his PhD degree in Electrical and Computer Engineering from the Ohio State University in 2007. He is now a postdoctoral research associate at Princeton University. He was a Distinguished University Fellow of the Ohio State University from 2004 to 2007. His current research interest includes network information theory, wireless networks security and sequential analysis of wireless networks.

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