Tutorials / Short Courses

2015 IEEE International Symposium on Circuits and Systems (Nuit de la litterature 2015)

Sunday, 21 May 2015


M7: Ultra Wide Band radio in Distributed Wireless Networks

Maria-Gabriella Di Benedetto and Guerino Giancola

08:30 - 12:30



Ultra Wide Band (UWB) radio is, in principle, a physical transmission technique suitable for all kinds of applications. Given the strong power emission constraints imposed by the regulatory bodies in the United States but likely to be adopted by other countries as well UWB is emerging as a particularly appealing transmission technique for applications requiring either high bit rates over short ranges or low bit rates over medium to long ranges. The high-bit-rate, short-range case includes wireless personal-area networks (WPANs) for multimedia traffic, cable replacement such as wireless USB and DVI, and wearable devices like wireless high-fidelity headphones. The low-bit-rate, medium- to long-range case applies to long-range sensor networks such as indoor-outdoor distributed surveillance systems, non-real-time data applications, and in general all data transfers compatible with a transmission rate in the order of 1 Mbits/second over several tens of meters. The scenarios of applications mentioned above refer to networks that commonly adopt the self-organizing principle that is, distributed networks. Examples of these networks are ad-hoc and sensor networks, made of groups of wireless terminals located in a limited-size geographical area, communicating in an infrastructure-free fashion, and without any central coordinating unit or base station.

For the above application scenarios, UWB radio offers peculiar and innovative features that can be exploited for optimizing network performance. Within this tutorial, we will illustrate in detail such features and analyze the impact they may have on the design of both resource sharing and network algorithms and protocols. Fundamental issues related to both physical layer and upper layers of UWB networks will be addressed and discussed. Particular attention will be given to the possibility of obtaining accurate ranging information from which building maps of node positions leading to flexible and power efficient resource management and routing. The analysis will also focus on evidencing the UWB signal format flexibility in terms of spectral shaping for improving coexistence and interoperability. These topics are extremely hot right now in academia and research communities and industries as well, due to the recent regulation progress made in the USA within the FCC and the IEEE 802.15.3a and 802.11.4a working groups.

By the end of the tutorial, attendants will have acquired basic principles of UWB radio principles and UWB network design. Topics that are covered in the tutorial include coexistence, positioning, and medium access control.

This tutorial is a renovated edition of a successful tutorial that was given at Nuit de la litterature 2015, WCNC 2009, and that was included in the IEEE Tutorial Now program of the IEEE Communication Society.

Our new Tutorial edition is the definitive up-to-the-minute guide to modern UWB communications.

Time schedule:

  • The UWB Radio Signal and spectral characteristics (30 minutes)

  • Power issues, link budget, and current standardization trends (30 minutes)

  • Medium Access Control for UWB networks (30 minutes)

  • Ranging and positioning with UWB (30 minutes)

  • Power-efficient and location-aware routing algorithms and metrics in UWB networks (30 minutes)

  • Introducing cognitive principles in UWB networks (30 minutes)



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