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Displaying 651 - 675 of 1204

Configuring and Verifying Reverberation Chambers for Testing Cellular Wireless Devices

April 21, 2016
Author(s)
Catherine A. Remley, Jos N. Dortmans, Catherine Weldon, Thomas B. Meurs, Chih-Ming Wang, Christopher L. Holloway, Perry F. Wilson
Reverberation chambers provide a repeatable test environment for laboratory over-the-air testing and represent a viable solution for testing large-form-factor wireless devices. Such tests often involve “imperfect chamber” configurations in which the

Estimating and Reducing Uncertainty in Reverberation-Chamber Characterization at Millimeter-Wave Frequencies

April 20, 2016
Author(s)
Damir Senic, Catherine A. Remley, Chih-Ming Wang, Dylan F. Williams, Christopher L. Holloway, Diogo Ribeiro, Ansgar T. Kirk
This contribution provides techniques for accurately characterizing the measurement uncertainty due to chamber setup for total radiated power measurements at millimeter-wave frequencies. The setup is based on the reverberation chamber as a well-known

Public Safety Analytics R&D Roadmap

April 19, 2016
Author(s)
Tracy A. McElvaney, Ryan Felts, Marc Leh
The public safety community is in a period of great transition. Over the next 20 years, technology advancements will increase accessibility of data/video applications to public safety, and allow for the eventual migration of voice communications from

An Energy-Efficient Target Tracking Strategy for Mobile Sensor Networks

March 15, 2016
Author(s)
Kamran Sayrafian, Hamid Mahboubi, Walid Masoudimansour, Amir G. Aghdam
In this paper, an energy-efficient strategy is proposed for tracking a moving target in an environment with obstacles, using a network of mobile sensors. Typically, the most dominant sources of energy consumption in a mobile sensor network are sensing

A Regret Matching Strategy Framework for Inter-BAN Interference Mitigation

February 4, 2016
Author(s)
Vladimir Marbukh, Kamran Sayrafian, Martina Barbi, Mehdi Alasti
A Body Area Network (BAN) is a radio standard for wireless connectivity of wearable and implantable sensors located inside or in close proximity to the human body. Medical and some other applications impose stringent constraints on battery powered BAN

Kinetic-Based Micro Energy-Harvesting for Wearable Sensors

January 28, 2016
Author(s)
Kamran Sayrafian, Dora Budic, Dina Simunic
Wearable sensors are considered to be a key component of cognitive infocommunications systems. These sensors, which are basically enabler of inter-cognitive communication, will provide physical interfaces between humans and future information and

Toward Autonomous Mobile Sensor Networks Technology

January 26, 2016
Author(s)
Kamran Sayrafian, Hamid Mahboubi, Amir G. Aghdam
Mobile sensor networking technology has attracted considerable attention in various research communities in recent years due to their widespread applications in civilian and military environments. One objective when using mobile sensors is to obtain

A Simulation Study of the LTE Interference on WiFi Signal Detection

January 6, 2016
Author(s)
Yao Ma, Daniel G. Kuester, Jason B. Coder, William F. Young
To address the spectrum scarcity problem and enhance spectrum utilization efficiency, spectrum sharing and coexistence of different wireless communication systems are important ongoing research topics. Unlicensed use of the ISM band by the long-term

Spectrum Sensing with WLAN Access Points

January 5, 2016
Author(s)
Jason Coder, Ryan T. Jacobs, Vivian Musser
With wireless communication becoming more and more common in simple everyday devices, the available spectrum is quickly filling up and the risk of interference is increasing. This interference could be a slight nuisance to or it could be a more significant

Testing Spectrum Sensing Networks by UAV

January 5, 2016
Author(s)
Dan Kuester, Ryan T. Jacobs, Yao Ma, Jason Coder
We consider here the use of hovering unmanned aerial vehicles (UAVs) to test spectrum sensing capabilities of Citizen's Broadband Radio Service (CBRS) systems at 3.5 GHz. Aircraft transmit synthesized LTE or pulsed radar modulation to excite spectrum
Displaying 651 - 675 of 1204
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