Diversity in Cooperative Networks

Recently, there has been much interest in modulation
techniques to achieve transmit
diversity motivated by the increased capacity of
multiple-input multiple- output (MIMO)
channels. It is affordable to equip base stations
with more than one antenna, but it is
difficult to equip the small mobile units with more
than one antenna. In such a case,
transmit diversity can only be achieved through user
cooperation leading to what is known
as cooperative diversity. Cooperation provides a new
dimension over which higher diversity
orders can be achieved.

In this thesis, we consider the design of protocols
that allow several terminals to cooperate
via forwarding each others' data, which can increase
the system reliability by achieving
spatial cooperative diversity. We consider the
problem of how to achieve and where to
exploit diversity in cooperative networks?

Autorentext

Dr. Seddik received his Ph.D. degree at the ECE Department,
University of Maryland at College Park 2008. Dr. Seddik is a
recipient of the Graduate School Fellowship from the University
of Maryland in 2004 and 2005 and the Future Faculty Program
Fellowship from the University of Maryland in 2006.

Klappentext

Recently, there has been much interest in modulation
techniques to achieve transmit
diversity motivated by the increased capacity of
multiple-input multiple- output (MIMO)
channels. It is affordable to equip base stations
with more than one antenna, but it is
difficult to equip the small mobile units with more
than one antenna. In such a case,
transmit diversity can only be achieved through user
cooperation leading to what is known
as cooperative diversity. Cooperation provides a new
dimension over which higher diversity
orders can be achieved.

In this thesis, we consider the design of protocols
that allow several terminals to cooperate
via forwarding each others' data, which can increase
the system reliability by achieving
spatial cooperative diversity. We consider the
problem of how to achieve and where to
exploit diversity in cooperative networks?