Fundamental limits of wideband localization

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.

Bibliographic Details
Main Author: Shen, Yuan, Ph. D. Massachusetts Institute of Technology
Other Authors: Moe Z. Win.
Format: Thesis
Language:eng
Published: Massachusetts Institute of Technology 2008
Subjects:
Online Access:http://hdl.handle.net/1721.1/43069
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author Shen, Yuan, Ph. D. Massachusetts Institute of Technology
author2 Moe Z. Win.
author_facet Moe Z. Win.
Shen, Yuan, Ph. D. Massachusetts Institute of Technology
author_sort Shen, Yuan, Ph. D. Massachusetts Institute of Technology
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description Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.
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spelling mit-1721.1/430692019-04-09T18:46:22Z Fundamental limits of wideband localization Shen, Yuan, Ph. D. Massachusetts Institute of Technology Moe Z. Win. Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. Electrical Engineering and Computer Science. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008. Includes bibliographical references (p. 107-112). Location-awareness is essential for many wireless network applications. However, determining nodes' positions precisely is a challenging task, especially in harsh multipath propagation environments. To address this problem, wide bandwidth signals are envisioned to be used in future localization systems, since such signals can provide accurate range measurements. In this paper, we investigate the localization performance of wideband networks and proposed a performance measure called the squared position error bound (SPEB) to characterize the localization accuracy. We derive the SPEB succinctly by applying the notion of equivalent Fisher information (EFI). The EFI provides insights into the essence of localization problem by unifying the localization information from individual anchors and that from a priori knowledge of the agent's position in a canonical form. We also investigate the use of wideband antenna arrays and the effect of clock asynchronism on the localization accuracy. Our analysis begins with the received waveforms themselves rather than utilizing only signal metrics, such as time-of-arrival and received signal strength, extracted from the waveforms. Our framework exploits all the information inherent in the received waveforms, and therefore the SPEB serves as a fundamental limit of localization accuracy. by Yuan Shen. S.M. 2008-11-07T18:58:38Z 2008-11-07T18:58:38Z 2008 2008 Thesis http://hdl.handle.net/1721.1/43069 244112842 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 112 p. application/pdf Massachusetts Institute of Technology
spellingShingle Electrical Engineering and Computer Science.
Shen, Yuan, Ph. D. Massachusetts Institute of Technology
Fundamental limits of wideband localization
title Fundamental limits of wideband localization
title_full Fundamental limits of wideband localization
title_fullStr Fundamental limits of wideband localization
title_full_unstemmed Fundamental limits of wideband localization
title_short Fundamental limits of wideband localization
title_sort fundamental limits of wideband localization
topic Electrical Engineering and Computer Science.
url http://hdl.handle.net/1721.1/43069
work_keys_str_mv AT shenyuanphdmassachusettsinstituteoftechnology fundamentallimitsofwidebandlocalization