Abstract:

Wireless sensor networks have emerged as the enabling technology 
for a wide spectrum of distributed systems for diagnosis, monitoring, 
detection and control in environmental, healthcare and military 
applications. The natures of sensor networks, such as their large-scale 
and the extreme resource poverty of their individual nodes in terms of 
energy and processing capability, have raised many new research challenges. 
In this talk, we address three specific cross-layer problems: sensor 
querying for networked control systems, dealing with challenges 
that arise at the intersection of control theory and networking; 
collaborative and feedback communications, exploiting the capability of 
sensor cooperation and feedback information; and power allocation 
in a fading channel via asymptotic queueing analysis of optimal 
power-delay tradeoff.