NDLI: Transmit power estimation using spatially diverse measurements under wireless fading

Content Provider	ACM Digital Library
Author	Ko, Bong Jun Ho, Ivan Wang-Hei Zafer, Murtaza
Copyright Year	2011
Abstract	Received power measurements at spatially distributed monitors can be usefully exploited to deduce various characteristics of active wireless transmitters. In this paper, we study the problem of "blind" estimation of a wireless node's transmit power utilizing solely received power measurements at spatially distributed monitors, without any prior knowledge about the transmitter's location or any statistical characterization of its transmit power. We first consider a deterministic setup and utilize a geometrical approach to obtain fundamental limitations on estimating the transmit power and location of an unknown wireless node. We show that a regular placement of monitors, though appealing, does not provide sufficient measurement diversity to yield a unique estimate. We then extend the setup to consider wireless fading and present a theoretical analysis of maximum likelihood (ML) estimate, which is analytically shown to be asymptotically optimal. Finally, we provide numerical results comparing the performance of the estimator through simulations and on a dataset of field measurements.
Starting Page	1171
Ending Page	1180
Page Count	10
File Format	PDF
ISSN	10636692
DOI	10.1109/TNET.2009.2039801
Volume Number	18
Issue Number	4
Journal	IEEE/ACM Transactions on Networking (TON)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-08-01
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cooperative monitoring Localization Mobile ad hoc network Power estimation Sensor Wireless
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Networks and Communications Software Computer Science Applications

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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