SEECS Colloquium

In this talk, I will explain my research on robust delivery of multimedia over packet networks when time or scalability constraints on the multimedia prevent direct retransmission of lost packets. The primary mechanism that I used to ensure robust delivery is the controlled application of redundant data in the form of forward error correction. In particular, I used Reed-Solomon erasure correcting codes and allocate bandwidth between media and FEC to maximize the quality of the received media. I'll begin the talk with work on unicast transmissions as applied to images. Next, I'll show how those techniques were extended to multicast transmission of video. Finally, I'll conclude the talk with directions for future work.

Alex Mohr received both the B.S.E. (1994) and M.S.E. (1999) from the Department of Bioengineering at the University of Washington. He continued his studies with the Department of Computer Science and Engineering, where he received an M.S. (2000) and will soon graduate with a Ph.D. (2002). His research interests include robust delivery of time-sensitive multimedia, scalability issues for multicast and peer-to-peer media distribution, network quality of service provisioning, and network design to support future and interactive media.