Second International Workshop Networking with Ultra Wide Band

Workshop on Ultra Wide Band for Sensor Networks

Rome, July 4-6, 2005


Prof. Branimir Vojcic



Energy-aware and Link-adaptive Routing Metrics for Ultra Wideband Sensor Networks



Wireless Sensor Networks are energy constrained since sensors operate with limited battery capacity. Thus, energy consumption is one of the most critical issues in the design of routing protocols. In addition, the link quality needs to be taken into account in the route decision for a wireless multihop network in order to efficiently exploit the inherent spatial diversity. In this talk we consider energy-aware and link-adaptive routing strategies for a UWB (Ultra Wide Band) sensor networks. We utilizes the ranging capabilities offered by UWB and employ adaptive modulation to take advantage of favorable link conditions. Different routing metrics are proposed based on the availability of sensor node’s location, link quality and next hop battery capacity information. These routing metrics integrate the measure of next hop remaining battery capacity with the throughput performance measures, Maximum Forward Progress (MFP) or Maximum Information Progress (MIP). The effectiveness of these metrics is evaluated in different simulation scenarios in terms of network throughput and lifetime for both random and grid sensor network topologies


Prof. Branimir Vojcic,

Department of Electrical and Computer Engineering at the

George Washington University


Prof. Alberto Sangiovanni-Vincentelli


Platform-based Design of Wireless Sensor Networks: the Metropolis Approach



Wireless Sensor Networks are a very active area of research. Their applications in all industrial and personal activities are compelling. The evolution of IC manufacturing and design technology is at the basis of the rapid advances in this field. After a brief overview of wireless technology and its use, I will focus on the challenges that a designer has to face to develop applications on a wireless network. A design methodology will be presented that is based on a rigorous abstraction and refinement process (platform-based design) and a proposal for the standardization of appropriate APIs will be introduced. I will then outline a design flow that spans application specification to implementation based on the Metropolis framework, a general environment for system level design. The framework is centered on rigorous semantics and orthogonalization of concern principles that allow separating communication from computation, functionality from architecture and optimizing the final implementation with respect to a set of complex constraints and requirements


Prof. Alberto Sangiovanni-Vincentelli

The Edgar L. and Harold H. Buttner Chair of Electrical Engineering and Computer Science

University of California at Berkeley

Co-founder, Chief Technology Advisor and Member of the Board, Cadence Design Systems

Prof. Rafael Pérez Jiménez



A Comparison Between Impulse Radio UWB and Wireless Optical Diffuse Systems for Sensor Networking


In the last years, UWB has become one of the most promising technologies for radio networking and sensor interconnection. One of the UWB techniques is impulse radio, offering large available transmission speed over short range distances. At the same time, wireless optical communications offers an alternative to classical radio systems in some especial environments which are severely affected by EM interferences as nuclear plants, hospitals or in-board systems. They do not require legal procedures for frequency assignment and the cost of the transceivers is usually lower than in radio-frequency. Both technologies share some characteristics as the absence of a carrier, the short duration of the pulse and the amount of bandwidth available. In this dissertation we will consider using similar strategies for medium-access control, coding and pulse conformation in both scenarios, we shall also explore other similitudes on the present standards for both technologies in order to study possible future concurrency.


Rafael Perez-Jimenez (Madrid, Spain, 1965) obtained his M.S. degree at the Polytechnic University of Madrid in 1991, and his Ph.D. in Telecommunications (Honors, Best Ph.D. Thesis award), in 1995 from the University of Las Palmas, Spain; where he is currently a Full Professor of Communications at the Signal and Communications Department, Telecommunications School. He has held visiting positions at the University of California-Davis, the Polytechnic University of Madrid and the Università degli Studi di Roma “La Sapienza”. His research interests include optical wireless communications, wireless personal area networks and free space optical communications. He has participated on several research projects with the Spanish research administration and communication companies from 1991.





















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