Klara Nahrstedt

Ralph M. and Catherine V. Fisher Professor
PhD, University of Pennsylvania, 1995

Research Area: Networking and Distributed Systems

Research Interests: Quality of Service Management, multimedia systems, integration of guaranteed and best effort services for audio/video/data traffic, QoS-aware resource management, QoS routing, soft real-time scheduling, middleware support for distributed multimedia Applications, multimedia security.

Research Group: Multimedia Operating NETworking (Monet)

Research Statement

Current advances in high-speed and mobile networks, as well as high-end and handheld computers enable different multimedia systems. In order to realize these systems, Professor Nahrstedt believes that new research in multimedia middleware, protocols, operating system support for multimedia, software engineering for distributed multimedia applications, and new thinking on availability and quality of service (QoS) on these systems are necessary. Although current multimedia is typically restricted to video, text and audio, other modalities such as tactile (haptic/sensory) data will force new requirements on delivered quality. Hence, her research interests are in services and protocols for provision of end-to-end quality of services within distributed multimedia systems. Her research group works on time-variant QoS management, QoS routing, multimedia middleware, peer-to-peer networks, multimedia services for smart rooms, pervasive computing, multimedia operating systems, adaptive cross-layer design of resource management for multimedia mobile systems, and HDTV distribution protocols.

Representative Publications

K-S. Lui, K. Nahrstedt, and S. Chen. Routing with Topology Aggregation in Bandwidth-Delay Sensitive Networks. accepted to IEEE/ACM Transactions on Networking, February 2004, Vol. 12, No. 1, pp. 17-29.
Y. Cui, B. Li, and K. Nahrstedt. Stream: Asynchronous Streaming Multicast in Application-Layer Overlay Networks. accepted to IEEE Journal on Selected Areas in Communications, January 2004, Vol. 22, No.1, pp. 191-196.
S. Shah, K. Chen, K. Nahrstedt. Dynamic Bandwidth Management in Single hop Ad hoc Wireless Networks, ACM/Kluwer Mobile Networks and Applications Journal (MONET), to appear February 2005, Vol. 10, No. 1.

Honors and Awards

Ralph M and Catherine V. Fisher Professor (2002)
Editor-in-Chief for ACM Multimedia Systems Journal (2001- )
IEEE Computer Society Leonard G. Abraham Prize (2000)
Campus Award for Innovation in Undergraduate Instruction Using Educational Technologies (2000)
C. W. Gear Junior Faculty Award (1999)
Xerox Award for Junior Faculty Research (1998)
NSF Career Award (1996)
Weierstrass Prize, Weierstrass Institute of Mathematics (1985)

Email: Klara Nahrstedt