Oregon State University

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Event Details

PhD Final Oral Examination – Ruiqing Ye

Wednesday, June 13, 2012 12:00 PM - 2:00 PM

Ultra-wideband Indoor Localization System
The accuracy and precision requirements of localization systems depend on specific application characteristics. This study focuses on developing algorithms and architectures of ultra-wideband (UWB) indoor localization systems with a variety of accuracy requirements and system complexity constraints.

In this study a centimeter-accuracy UWB localization system is developed. The technical challenges of achieving centimeter localization accuracy are investigated. A wireless localization system with centimeter accuracy is introduced and a two-step synchronization algorithm with picoseconds accuracy is presented.

This study also focuses on reducing the complexity of UWB localization systems when the localization accuracy requirement is down to a decimeter level. An UWB 3-D localization scheme employing the time-of-arrival (TOA) technique with single cluster of receivers is proposed. A hardware and software prototype that works in the 3.1-5.1 GHz range is constructed. This TOA scheme with receivers in a single unit requires synchronization between the transmitter and the receiver unit. A new TDOA localization scheme with multiple units, each of which operating with its own clock, is proposed to further reduce system complexity.

Major Advisor: Huaping Liu
Committee: Patrick Chiang
Committee: Raviv Raich
Committee: Thinh Nguyen
GCR: David Roundy 

Kelley Engineering Center (campus map)
Shannon Thompson
1 541 737 7234
shannon.thompson at oregonstate.edu
Sch Elect Engr/Comp Sci
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