On the Accuracy of Localization Systems Using Wideband Antenna Arrays
Name
Shen-2010-On the Accuracy of Localization Systems Using Wideband Antenna Arrays.pdf
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381.8 KB
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Adobe PDF
Checksum (MD5)
9c767a12efccc2b2c3d645af4873278f
Author(s)
Shen, Yuan
Win, Moe Z.
Date Issued
January 2010
Journal
IEEE Transactions on Communications
Publisher
Institute of Electrical and Electronics Engineers
Citation
Win, M.Z., with Yuan Shen. “On the Accuracy of Localization Systems Using Wideband Antenna Arrays.” Communications, IEEE Transactions On 58.1 (2010) : 270-280.© 2010 IEEE.
Version
Final published version
Abstract
Accurate positional information is essential for many applications in wireless networks. Time-of-arrival (TOA) and angle-of-arrival (AOA) are the two most commonly used signal metrics for localizing nodes with unknown positions. In this paper, we consider a wireless network in which each node is equipped with a wideband antenna array capable of performing both TOA and AOA measurements. Since both the position and orientation of the agent are of interest, we propose a localization framework that jointly estimates these two parameters. The notion of equivalent fisher information is applied to derive the squared error bounds for the position and orientation. Since our analysis starts from the received waveforms rather than directly from the signal metrics, these bounds characterize the fundamental limits of the position and orientation accuracy. Surprisingly, our result reveals that AOA measurements obtained by wideband antenna arrays do not further improve position accuracy beyond that provided by TOA measurements.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Laboratory for Information and Decision Systems
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/tcomm.2010.01.080141
