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Home | Seminars and Symposia | Past seminars/symposia: Monday, October 14, 2002

DTC Seminar Series

Time-Varying Fair Queuing Scheduling for Multicode CDMA Based on Dynamic Programming


Anastasios Stamoulis
University of Minnesota
Electrical and Computer Science

Monday, October 14, 2002
1:00 pm

402 Walter Library

Fair Queuing (FQ) algorithms, which have been proposed for Quality of Service (QoS) wireline-wireless networking, rely on the fundamental idea that the service rate allocated to each user is proportional to a positive weight. Targeting wireless data networks with a multicode CDMA-based physical layer, we develop FQ with time-varying weight assignment in order to minimize the queuing delays of mobile users. Applying dynamic programming, we design a computationally efficient algorithm which produces the optimal service rates while obeying constraints imposed by the underlying physical layer, and QoS requirements. Furthermore, we study how information about the underlying channel quality can be incorporated into the scheduler to improve network performance.


Anastasios Stamoulis holds degrees in Computer Engineering (Diploma, University of Patras, Greece, July 1995), Computer Science (Master, University of Virginia, May 1997), and Electrical Engineering (Ph.D., University of Minnesota, December 2000). In 2001-2002, he was a Senior Technical Staff Member at AT&T Labs-Research. Anastasios is spending the academic year 2002-2003 at the University of Minnesota as a Visiting Assistant Professor with the ECE Department. His research interests include Wireless Networking, QoS Networks, Digital Communications, and Digital Signal Processing.