Theory and Practice of Lossy Joint Source-Channel Coding

Speaker: Maria Fresia
Princeton UniversityAbstract: With the communication revolution, the number of mobile, satellite and computer communication systems has grown exponentially with the consequence that the available bandwidth for each service is shrinking. The Shannon source-channel separation principle, a milestone on efficient data transmission, states that the optimal performance can be approached by independently designing the source and the channel codes. Driven by this principle, modern communication systems have been developed accordingly. However, the existing source coding schemes exhibit catastrophic behavior with respect to channel errors, thus inducing a significant sub-optimality in the overall transmission system. In this talk a practical lossy joint source-channel coding approach, aimed at avoiding this catastrophic behavior is presented. Applications of the proposed approach to point-to-point images transmission and to the broadcasting scenario, where several users have to receive data generated from common sources, are illustrated.Biography: Dr. Fresia received the laurea degree (eqv. M. Sc.) in Telecommunications Engineering and the Ph.D. degree in Electronic and Computer Engineering from the University of Genova, Italy in 2002 and 2006 respectively. From September 2006 to September 2007 she was postdoctoral research associate at the Department of Electrical Engineering at the University of Louvain la Neuve, Belgium (in collaboration with Prof. Luc Vandendorpe). She is currently a postdoctoral research associate at the Department of Electrical Engineering at Princeton University (in collaboration with Professor H. V. Poor). Her research interests include coding theory and signal processing with particular interest to joint source-channel coding, distributed source coding and unequal error protection for embedded images transmission.Host: Giuseppe Caire, caire@usc.edu, EEB 528, x07326

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Gerrielyn Ramos