News Column

Investigators at Research Institute Report Findings in Circuits and Signal Processing

March 5, 2014



By a News Reporter-Staff News Editor at Telecommunications Weekly -- New research on Circuits and Signal Processing is the subject of a report. According to news reporting from Atlanta, Georgia, by VerticalNews journalists, research stated, "Non-cooperative localization is an important class of applications with the goal of detecting and tracking objects without their explicit participation. Recognizing that these objects will attenuate any radio signals that pass through them, recent works have proposed using the received signal strength (RSS) measurements from networks of portable wireless devices to detect, localize, and track objects through radio frequency (RF) tomography."

The news correspondents obtained a quote from the research from Research Institute, "Because the effects of these objects on radio signals can be relatively small, accurate radio propagation models are essential to the accuracy and reliability of these methods. Despite their critical importance, only limited work has been done to develop and test such models. In this paper, we describe the RF tomography problem in detail, comparing both existing and novel shadowing models analytically. We design an RF tomography testbed and describe the techniques used to conduct field test measurements. We present the experimental results from our RF tomography testbed comparing several different shadowing models."

According to the news reporters, the research concluded: "Further, we present the results of applying the different shadowing models to RSS measurements obtained in a field test and evaluate how well each model approximates the radio propagation experienced during our test."

For more information on this research see: Propagation Modeling for Radio Frequency Tomography in Wireless Networks. IEEE Journal of Selected Topics in Signal Processing, 2014;8(1):55-65. IEEE Journal of Selected Topics in Signal Processing can be contacted at: Ieee-Inst Electrical Electronics Engineers Inc, 445 Hoes Lane, Piscataway, NJ 08855-4141, USA. (Institute of Electrical and Electronics Engineers - www.ieee.org/; IEEE Journal of Selected Topics in Signal Processing - ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4200690)

Our news journalists report that additional information may be obtained by contacting B.R. Hamilton, Georgia Technical Res Inst, Informat & Commun Lab, Atlanta, GA 30332, United States. Additional authors for this research include X.L. Ma, R.J. Baxley and S.M. Matechik.

Keywords for this news article include: Atlanta, Georgia, United States, Wireless Network, Wireless Technology, North and Central America, Circuits and Signal Processing

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Source: Telecommunications Weekly


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