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Search Publications by: Camillo Gentile (Fed)

Displaying 126 - 150 of 171

A Comprehensive Evaluation of Joint Range and Angle Estimation in Indoor Ultrawideband Location Systems

December 31, 2008

Author(s)

Camillo A. Gentile

Fine time resolution enables Ultra-Wideband (UWB) ranging systems to reliably extract the first multipath arrival corresponding to the range between a transmitter and receiver, even when attenuated in strength compared to later arrivals. Bearing systems

A Frequency-Dependence Model for the Ultra-Wideband Channel based on Propagation Events

August 8, 2008

Author(s)

Camillo A. Gentile

While the frequency dependence of the wireless channel may be negligible for narrow to wideband signals, it has been shown that modeling this dependence for bandwidths in excess of 2 GHz improves channel reconstruction up to 40%.Yet to our knowledge, only

Indoor Localization: Technology That Can Save First Responder Lives

December 1, 2007

Author(s)

Nader Moayeri, Camillo A. Gentile, Kamran Sayrafian, Michael R. Souryal

Every year a number of first responders lose their lives while battling fires or rescuing civilians during such emergencies. Indoor localization or location tracking roughly provides the same capability inside buildings that GPS does outdoors. It allows a

A Frequency-Dependence Model for the Ultra-Wideband Channel based on Propagation Events

November 26, 2007

Author(s)

Camillo A. Gentile, Alfred Kik

While the frequency-dependence of the wireless channel may be negligible for narrow to wideband signals, it has been shown that modeling this dependence for bandwidths in excess of 2 GHz improves channel reconstruction up to 40%. Yet to our knowledge, only

Distributed Sensor Location through Linear Programming with Triangle Inequality Constraints

July 2, 2007

Author(s)

Camillo A. Gentile

The falling price and reduced size of sensors for monitoring spatially-sensitive environmental properties such as temperature, light, sound, and vibration have motivated research in location algorithms in recent years. To our knowledge, the algorithm which

Sensor Location through Linear Programming with Arrival Angle Constraints

March 14, 2007

Author(s)

Camillo Gentile, J Shiu

In previous work, we established a linear programming framework to determine sensor location from measured link distances between neighboring nodes in a network. Besides providing greater accuracy compared to other techniques, linear programs in particular

A Comprehensive Evaluation of Indoor ranging using Ultra-Wideband Technology

January 15, 2007

Author(s)

Camillo Gentile, El Kik

Ultra-wideband technology shows promise for precision ranging due to its fine time resolution to resolve multipath fading and the presence of lower frequencies in the baseband to penetrate walls. While a concerted effort has been conducted in the extensive

Distributed Sensor Location through Linear Programming with Triangle Inequality Constraints

June 1, 2006

Author(s)

Camillo A. Gentile

Interest in dense sensor networks due to falling prices and reduced size has motivated research in sensor location in recent years. To our knowledge, the algorithm which achieves the best performance in sensor location solves an optimization program by

An Evaluation of Ultra Wideband Technology for Indoor Ranging

November 1, 2005

Author(s)

Camillo Gentile, El Kik

Ultra wideband technology shows promise for precision ranging due to its fine time resolution to resolve multipath fading and the presence of lower frequencies in the baseband to penetrate walls. While a concerted effort has been conducted in the

Sensor Location through Linear Programming with Triangle Inequality Constraints

October 1, 2005

Author(s)

Camillo A. Gentile

Interest in dense sensor networks due to falling price and reduced size has motivated research in sensor location in recent years. While many algorithms can be found in literature, no benchmark exists and most papers fail to compare their results to other

Evaluation of Indoor Localization Techniques

July 1, 2005

Author(s)

Camillo Gentile, Kamran Sayrafian, Nader Moayeri

We have implemented a quantum key distribution (QKD) system with polarization encoding at 850 nm over 1 km of optical fiber. The high-speed management of the bit-stream, generation of random numbers and processing of the sifting algorithm are all handled

Sensor Location Through Linear Programming With Triangle Inequality Constraints

May 16, 2005

Author(s)

Camillo A. Gentile

General Purpose Calculator for Outdoor Propagation Loss

February 1, 2005

Author(s)

Leonard E. Miller, Camillo Gentile, D Kaspar