Abstract

Multihop wireless network (a.k.a. ad hoc wireless network) is inherently constrained by limited energy, bandwidth resources, and its distributed nature of network-wide control. In this presentation, we will discuss scenario-specific improved routing and system design strategies in multihop wireless networks. First, the main features of our approaches to real-time quality-of-service support in mobile ad hoc networks and reliable data dissemination in field sensor networks will be outlined. Next, we will consider the effect of lower layer behavior on the network-level performance in a disributed-control multihop wireless CDMA sensor networks. How the link layer characteristics (such as multi-access interference) affect the routing functionality in a random setting of active node locations will be shown. Then, different network topologies will be discussed in a bid to achieve a better trade-off between multi-access interference and network connectivity. The effect of physical receiver structure and signature codes on low-cost system realization will also be discussed. Finally, we will conclude by outlining a few directions of future research.

Biography

Swades De received his B.Tech degree in Radiophysics and Electronics from University of Calcutta, India, in March 1993, M.Tech degree in Optoelectronics and Optical Communication from Indian Institute of Technology, Delhi, in December 1998, and PhD degree in Electrical Engineering from State University of New York at Buffalo in February 2004. During 1993-1997 he was a hardware development engineer and in the first half of 1999 he was a software engineer in different telecommunication companies in India. Since January 2004, he has been working at ISTI-CNR, in Pisa, Italy, through a European research fellowship. His current research interests include performance study, resource-effieicnt routing in multihop wireless networks and high-speed networks, integrated wireless technologies, and communication and systems issues in optical networks.