Fundamental limits of wideband localization
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.
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| Format: | Thesis |
| Jezik: | eng |
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Massachusetts Institute of Technology
2008
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| Online dostop: | http://hdl.handle.net/1721.1/43069 |
| _version_ | 1826190204435693568 |
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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 |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008. |
| first_indexed | 2024-09-23T08:36:40Z |
| format | Thesis |
| id | mit-1721.1/43069 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T08:36:40Z |
| publishDate | 2008 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| 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 |