NLOS identification and mitigation for localization based on UWB experimental data

Sensor networks can benefit greatly from location-awareness, since it allows information gathered by the sensors to be tied to their physical locations. Ultra-wide bandwidth (UWB) transmission is a promising technology for location-aware sensor networks, due to its power efficiency, fine delay resolution, and robust operation in harsh environments. However, the presence of walls and other obstacles presents a significant challenge in terms of localization, as they can result in positively biased distance estimates. We have performed an extensive indoor measurement campaign with FCC-compliant UWB radios to quantify the effect of non-line-of-sight (NLOS) propagation. From these channel pulse responses, we…

• NS
  National Science Foundation

  Award: 0901034
• MI
  Massachusetts Institute of Technology
• ET
  Eidgenössische Technische Hochschule Zürich
• OO
  Office of Naval Research

  Award: N00014
• DO
  Division of Electrical, Communications and Cyber Systems