Faculty Advisor or Committee Member

Kaveh Pahlavan, Advisor

Faculty Advisor or Committee Member

Lifeng Lai, Committee Member

Faculty Advisor or Committee Member

Emmanuel Agu, Committee Member

Identifier

etd-050316-230330

Abstract

The ultra-wideband (UWB) technology has a vast unlicensed frequency spectrum, which can support precise indoor positioning in orders of centimeters. The features of UWB signals can be utilized for variety of applications. In this project first we present an empirical channel models to analyze the localization accuracy of the UWB technology for interactive electronic gaming (Ping-Pong) in Line-of-Sight (LOS) and Obstructed LOS (OLOS) scenarios. Then we introduce a new concept that we refer to as micro-gesture detection to handle the more refined motions of the hand, such as rotation, while one antenna is held by the user using features of UWB signal. We use four specific features of the UWB signals: time of arrival, power of the first peak, total power, and the Root-Mean Square (RMS) of the delay spread, for this purpose. As the hand rotates the position of the antenna in the hand and the external antenna changes from LOS to OLOS. We demonstrate that features of the UWB signals are more useful than the RSS signal of the Wi-Fi to detect this class of micro-gestures. We foresee this micro-gesture detection capabilities become helpful for the people with limited ability or visually impaired for implementation of simplified sign language to communication with electronic devices located away from a person. We compare gesture detection using multiple features of the UWB signal with traditional gesture detection using the received signal strength (RSS) of the Wi-Fi signal.

Publisher

Worcester Polytechnic Institute

Degree Name

MS

Department

Electrical & Computer Engineering

Project Type

Thesis

Date Accepted

2016-05-03

Accessibility

Restricted-WPI community only

Subjects

ultra wideband (UWB), motion gaming, gesture detection, indoor localization, line of sight (LOS), obstructed line of sight (OLOS), time of arrival (TOA), received signal strength (RSS), medical application

Available for download on Saturday, May 04, 2019

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