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Advanced communications

Wireless (RF)

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Displaying 251 - 275 of 648

PSCR 2017 Stakeholder Conference Presentation Materials -- Day 1

October 16, 2018
Author(s)
Jeremy E. Benson, Jeff Johnson, Eric W. Anderson, Carol Politi, TRX Systems, Inc., Anthony Rowe, A Shkel, Chenji Harsha, Nancy French, Murat Yuskel, Benjamin J. Posthuma, Margaret Pinson, Dereck R. Orr
This document is a compilation of the slides presented during Day 3 of the 2017 Public Safety Communications Research Program's (PSCR) Annual Stakeholder Conference. Day 3 topics include PSCR research plans and results for Location-Based Services

Correlation-Based Uncertainty in Loaded Reverberation Chambers

October 1, 2018
Author(s)
Maria G. Becker, Michael R. Frey, Sarah B. Streett, Catherine A. Remley, Robert D. Horansky, Damir Senic
When reverberation chambers are loaded to increase the coherence bandwidth for modulated-signal measurements, a secondary effect is decreased spatial uniformity. We show that an appropriate choice of stirring sequence, consisting of a combination of mode

Probability of Coexistence of LTE-LAA and WLAN Systems Based on Delay Constraints

July 29, 2018
Author(s)
Yao Ma, William Young, Eric W. Anderson, Jason Coder
To support efficient spectrum sharing and related standardization efforts in unlicensed spectrum, it is important to develop analytical tools to accurately quantify coexistence performance between long-term evolution license assisted access (LTE-LAA) and

Model-based Cosimulation for Industrial Wireless Networks

June 15, 2018
Author(s)
Ging Jeng, Honglei Li, Yanzhou Liu, Yongkang Liu, Mohamed Hany, Rick Candell, Shuvra Bhattacharyya
Wireless communications technology has the potential to provide major benefits in lowering the cost and increasing the efficiency of factory automation (FA) systems. However, design of FA systems that employ wireless networks involves stringent constraints

Importance of Preserving Correlations in Error-Vector-MagnitudeUncertainty

June 14, 2018
Author(s)
Ben Jamroz, Dylan Williams, Kate Remley, Rob Horansky
Correlations are an important consideration in the uncertainty analysis of high-frequency electronic systems. We introduce a method to scramble the correlations of a correlated uncertainty analysis and develop a software tool to do this as part of the NIST

Dimensioning Wireless Use Cases in Industrial Internet of Things

June 12, 2018
Author(s)
Yongkang Liu, Rick Candell, Mohamed Hany, Lotfi Benmohamed
Industrial wireless is becoming increasingly needed in the Industrial Internet of Things (IIoT) for carrying mission-critical data to leverage the visibility, control, and safety of industrial environments. In this paper we propose a framework that

Guide to Industrial Wireless Systems Deployments

May 21, 2018
Author(s)
Richard Candell, Mohamed T. Hany, Kang B. Lee, Yongkang Liu, Jeanne T. Quimby, Catherine A. Remley
This document is intended to be a practical guide used by engineers and managers facilitating them to go through the process of defining the objectives of their wireless systems and examining the environments where the wireless systems are to be deployed

Quasi-Deterministic-Channel-Propagation Model for a Data Center at 60 GHz

April 30, 2018
Author(s)
Camillo Gentile, Peter B. Papazian, Roy Sun, Jelena Senic, Jian Wang
We describe a measurement campaign conducted in a data center, a unique environment in which transceivers are positioned above the server racks. A total of 80 channel acquisitions, including small-scale measurements, were recorded using our 3D double

Fading due to static and dynamic features in a factory environment on wireless channels

April 20, 2018
Author(s)
Alexandra Curtin, David R. Novotny, Richard Candell, Galen H. Koepke, Peter B. Papazian, Jeanne T. Quimby, Catherine A. Remley
Channel sounding of dense or complex environments such as industrial or factory spaces is an important piece to the puzzle of increasing the deployment of current and next-generation wireless technologies. The deployment of machine--to-machine or vehicle

Bringing Precision to 5G Test: Activities in the U.S.

April 9, 2018
Author(s)
Catherine A. Remley, Maria G. Becker
(Workshop Abstract) The next generation (5G) network won’t just deliver much faster connection and higher data capacity. It also promises to provide reliable connectivity, low energy consumption, and connecting billions of people and trillions of things

Spatial Channels for Wireless Over-the-Air Measurements in Reverberation Chambers

April 9, 2018
Author(s)
Maria G. Becker, Rob Horansky, Damir Senic, Vincent T. Neylon, Kate Remley
NIST is developing a hybrid test chamber for over-the-air characterization of the next generation of wireless devices in spatial channel environments. By combining features of both reverberation and anechoic chambers, the hybrid chamber will produce

The New Large Antenna Positioning System for Over-The-Air Testing at the National Institute of Standards and Technology

April 8, 2018
Author(s)
Jeffrey R. Guerrieri, David R. Novotny, Josh Gordon, Alexandra Curtin, Michael S. Allman, Kim Hassett, Quang Ton
This paper introduces the new Large Antenna Positioning System (LAPS) at the National Institute of Standards and Technology (NIST). For the last eight years NIST has been pioneering the use of robotics for antenna measurements. Starting with the

Cooperative Vehicular Networking: A Survey

March 8, 2018
Author(s)
Hamid Gharavi
With the remarkable progress of cooperative communication technology in recent years, its transformation to vehicular networking is gaining momentum. Such a transformation has brought a new research challenge in facing the realization of cooperative
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