UWB Systems for Wireless Sensor Networks

Research output: Contribution to journalArticle

Abstract

Wireless sensor networks are emerging as an important area for communications. They enable a wealth of new applications including surveillance, building control, factory automation, and in-vehicle sensing. The sensor nodes have to operate under severe constraints on energy consumption and form factor, and provide the ability for precise self-location of the nodes. These requirements can be fulfilled very well by various forms of ultra-wide-band (UWB) transmission technology. We discuss various techniques and tradeoffs in UWB systems and indicate that time-hopping and frequency-hopping impulse radio physical layers combined with simple multiple-access techniques like ALOHA are suitable designs. We also describe the IEEE 802.15.4a standard, an important system that adopts UWB impulse radio to ensure robust data communications and precision ranging. in order to accommodate heterogeneous networks, it uses specific modulation, coding, and ranging waveforms that can be detected well by both coherent and noncoherent receivers.

Details

Authors
  • Jinyun Zhang
  • Philip V. Orlik
  • Zafer Sahinoglu
  • Andreas Molisch
  • Patrick Kinney
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • ultra-wide-band (UWB), time-hopping impulse radio (TH-IR), (PPM), pulse position modulation, precision ranging (PR), physical layer (PHY), non-line-of-sight (NLOS), multipath component (MPC), modulation, low rate (LR), Coding and multiple access (MCM), line-of-sight (LOS), wireless personal-area network (WPAN), wireless sensor networks (WSNs)
Original languageEnglish
Pages (from-to)313-331
JournalProceedings of the IEEE
Volume97
Issue number2
Publication statusPublished - 2009
Publication categoryResearch
Peer-reviewedYes