Universidade Federal do Rio de Janeiro COPPE

Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia

Instituto de Matemática

 
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Evento: 'Seminário: Profa. Elza Erkip '

Eventos PESC (Palestras, Seminários, etc.)
Palestras, Seminários, etc. do PESC/COPPE/UFRJ.
Data: Thursday, April 16, 2009 At 10:00
Duração: 2 Horas

Seminário: Profa. Elza Erkip

A Profa. Elza Erkip da Polytechnic University (agora NYU) estará visitando a UFRJ nesta quinta-feira, dia 16/4/2009. A Profa. Erkip atua na área de Redes de Computadores e Teoria da Informação e possui diversos trabalhos em redes sem fio. Ela irá proferir uma palestra bem abrangente no dia 16/4 às 10h na sala H310-B (ver detalhes abaixo). Ela também está disponível para conversar sobre trabalhos de pesquisa em andamento. Caso alguém esteja interessado em se reunir com ela (individualmente ou em pequenos grupos), basta enviar uma mensagem Daniel Ratton que agendará um horário.

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Title:
Cooperative Wireless Networking: From Theory to Practice

Abstract:
Wireless will be the dominant mode of internet access for end users in near future. However, bandwidth limitations of the wireless channel, interference from multiple users operating in the same band and channel variations due to fading become bottlenecks for typical multimedia applications that require high bandwidth and an error resilient communication medium. Cooperative networking, by enabling wireless terminals to assist each other in transmitting information to their desired destinations, provides a promising technology for improving the performance of wireless networks.

In this talk we provide an overview or cooperative wireless networking, and summarize some of our recent research activities that span multiple layers of the protocol stack. We describe the tradeoff between reliability and rate (also known as the diversity-multiplexing tradeoff) in cooperative systems. We suggest cooperative techniques that improve the reconstructed signal quality in sensor and multimedia applications. By incorporating the notion of user cooperation at the medium access control (MAC) layer, we show how the benefits can be realized in a large network. We also outline our current efforts in building a large scale experimental cooperative networking testbed.

Biography:
Elza Erkip received the Ph.D. and M.S. degrees in Electrical Engineering from Stanford University, and the B.S. degree in Electrical and Electronics Engineering from Middle East Technical University, Turkey. She joined Polytechnic University in Spring 2000, where she is now an Associate Professor of Electrical and Computer Engineering. She also held visiting positions at Princeton University and Rice University.

Dr. Erkip received the NSF CAREER award in 2001, the Communications Society Rice Paper Award in 2004 and the ICC Communication Theory Symposium Best Paper Award in 2007. She co-authored a paper that won the ISIT Student Paper Award in 2007. She is currently an Associate Editor of IEEE Transactions on Information Theory and a co-chair of IEEE Globecom 2009, Communication Theory Symposium. In the past she was an Associate Editor of IEEE Transactions on Communications, a Publications Editor of IEEE Transactions on Information Theory and a Guest Editor of IEEE Signal Processing Magazine.


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