Cooperative and Adaptive
Hybrid ARQ: Cross-layer Design Perspectives
Farshad Lahouti
University of Tehran, Iran
Wednesday, September
8, 2pm
Location: BAB024 (Bahen Basement)
Abstract:
In this talk, we explore
the design interactions between different layers of the communications
protocol stack in a wireless cooperative network. In particular, the objective
is to analyze the performance and devise cross-layer design approaches for
hybrid automatic repeat request (HARQ) protocols in wireless networks, which
employ adaptive modulation and coding (AMC) in conjunction with adaptive
cooperative diversity and are subject to time-correlated fading channels. We
first start from simple point-to-point wireless fading scenarios and move
towards more complex cooperative settings. The mathematical models,
performance and QoS metrics for the systems under consideration are elaborated
and cross-layer design and optimization solutions are discussed. Extensive
numerical analytical results are presented which provide insight into the
effect of different design parameters and channel characteristics on the
overall system performance.
Joint work with Jalil S.
Harsini, Marco Levorato, and Michele Zorzi
Bio:
Farshad
Lahouti received his B.Sc. from the University of Tehran, Iran and his Ph.D.
from the University of Waterloo, Canada both in Electrical and Computer
Engineering in 1997 and 2002, respectively. Between 2002 and 2004, he worked
first as a Post Doctoral Fellow and subsequently as a research assistant
professor at the University of Waterloo. Part of his work is the main component
of a research project (co-funded by Nortel Networks and Communications and
Information Technology Ontario (CITO)) that has been documented as a CITO
success story. Farshad Lahouti is the recipient of a number of awards, including
a CITO Tomorrow’s Technology Leaders award. He is currently with the School of
Electrical and Computer Engineering, University of Tehran and is directing the
Communications Engineering Department and the Wireless Multimedia Communications
laboratory. He is also the founder of Mobile Communication System laboratory
complex at the University of Tehran in cooperation with the MCCI, Iran’s largest
mobile operator. His current research interests are cross-layer design for
wireless communications, source, channel and network coding, distributed
multimedia compression, and hardware implementation of coding schemes. He was a
member of the board at the University of Tehran Technology Incubator from 2005
to 2008.
Host of Talk:
Ben Liang
(liang@comm.utoronto.ca)