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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

PerfLoc (Part 2): Performance Evaluation of the Smartphone Indoor Localization Apps

September 23, 2018

Author(s)

Nader Moayeri, Chang Li, Lu Shi

This paper describes the structure of the PerfLoc Prize Competition organized by the US National Institute of Standards and Technology (NIST). The Competition consisted of collecting an extensive repository of smartphone data, releasing the data to

Spectrum Occupancy and Ambient Power Distributions for the 3.5 GHz Band Estimated from Observations at Point Loma and Fort Story

September 11, 2018

Author(s)

Max Lees, Adam Wunderlich, Peter J. Jeavons, Paul D. Hale, Michael R. Souryal

This report presents descriptive statistics characterizing a set of over 14,000 spectrograms that were recorded by a recent measurement campaign at two coastal locations: Point Loma, in San Diego, California and Fort Story, in Virginia Beach, Virginia

Statistical Considerations for Total Isotropic Sensitivity of Wireless Devices Measured in Reverberation Chambers

August 26, 2018

Author(s)

Rob Horansky, Thomas B. Meurs, Chih-Ming Wang, Maria G. Becker, Kate Remley

The vast array of wireless device form factors being developed for internet-of-things applications necessitates a flexible test environment for determining performance metrics such as total isotropic sensitivity. Reverberation chambers loaded with lossy

Oblique Incidence Reflectivity of Microwave Radiometer Calibration Targets in G-band

August 13, 2018

Author(s)

Derek A. Houtz, Dazhen Gu

High emissivity temperature-controlled microwave blackbodies, or calibration targets, are often used as brightness temperature reference sources for radiometer calibration. Calibration targets are, in practice, often viewed from a range of angles due to

Analysis of Channel Access Priority Classes in LTE-LAA Spectrum Sharing System

July 29, 2018

Author(s)

Yao Ma

To provide differentiated quality of service (QoS) in long-term evolution (LTE) license assisted access (LAA) procedure, the 3GPP has defined several channel access priority classes (CAPCs), which use distinct arbitration inter-frame space (AIFS)

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

Spatial Uniformity Study in a Loaded Reverberation Chamber at Millimeter-Wave Frequencies

July 29, 2018

Author(s)

Damir Senic, Kate Remley, Maria G. Becker, Christopher L. Holloway

We performed a study of the spatial uniformity of the averaged fields in a reverberation chamber at millimeter-wave frequencies based on measurements of the power transfer function for six different reverberation chamber loading configurations. We show

Random-Deadline Missing Probability Analysis for Wireless Communications in Industrial Environments

July 5, 2018

Author(s)

Mohamed T. Hany, Nader Moayeri

The flexibility of wireless networks, and their cost-efficient setup and maintenance have motivated the deployment of wireless communications in industrial environments. Strict industrial requirements including the time-sensitive delivery of data have led

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

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