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Search Publications by

Camillo Gentile (Fed)

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Displaying 1 - 25 of 74

Quasi-Deterministic Channel Propagation Model for an Urban Environment at 28 GHz

April 16, 2021
Neeraj Varshney, Jian Wang, Chiehping Lai, Camillo Gentile
We reduced parameters of the Quasi-Deterministic channel propagation model, recently adopted by the IEEE 802.11ay task group for next-generation Wi-Fi at millimeter-wave, from measurements collected in an urban environment with our 28 GHz directional

Geometrical-Empirical Channel Propagation Model for Human Presence at 60 GHz

March 2, 2021
Camillo Gentile, Anmol Bhardwaj, Derek Caudill, Peter B. Papazian, Jack Chuang, David Michelson
Previous efforts to develop simulation and/or measurement-based channel propagation models for the effect of human blockage on millimeter-wave communication systems have yielded important results, but lack either accuracy, generality, or simplicity. To

Over-The-Air Calibration of a Dual-Beam Dual-Polarized 28-GHz Phased-Array Channel Sounder

July 10, 2020
Sung Yun Jun, Derek Caudill, Jelena Senic, Camillo Gentile, Jack Chuang, Nada Golmie
This paper describes an over-the-air calibration procedure for the impulse response of a 28-GHz phased-array antenna channel sounder. The silicon-germanium (SiGe) antenna board is composed from two 8x8 planar arrays; each array can generate a distinct beam

Penetration Loss at 60 GHz for Indoor-to-Indoor and Outdoor-to-Indoor Mobile Scenarios

July 8, 2020
Sung Yun Jun, Derek Caudill, Jack Chuang, Peter B. Papazian, Anuraag Bodi, Camillo Gentile, Jelena Senic, Nada T. Golmie
This paper investigates the penetration loss of an office building in indoor-to-indoor and outdoor-to-indoor mobile scenarios. The measurements were collected using our 60-GHz double- directional switched-antenna channel sounder. During measurement, the

Blind Calibration of Phase Drift in Millimeter-Wave Channel Sounders

June 11, 2020
Jack Chuang, Jelena Senic, Chunmei Liu, Camillo Gentile, Sung Yun Jun, Derek Caudill
Millimeter-wave channel sounders are much more sensitive to phase drift than their microwave counterparts by virtue of shorter wavelength. This matters when coherently phasing (electronic or mechanical) antenna scans collected over seconds, minutes, or

Simplified Ray Tracing for the Millimeter Wave Channel: A Performance Evaluation

February 14, 2020
Mattia Lecci, Paolo Testolina, Marco Giordani, Michele Polese, Tanguy Ropitault, Camillo Gentile, Neeraj Varshney, Michele Zorzi
Millimeter-wave (mmWave) communication is one of the cornerstone innovations of fifth- generation (5G) wireless networks, thanks to the massive bandwidth available in these frequency bands. To correctly assess the performance of such systems, however, it

A Classification Scheme for Wireless Channel Models Across the Development Life Cycle

July 12, 2019
David Michelson, Camillo Gentile, Nada T. Golmie, Jeanne Quimby, Kate Remley, Ken Gracie, Yvo de Jong
Wireless channel models play a critical role at all stages of the product life cycle, from standards development to network deployment. However, the distinctive needs and requirements for the channel models used at each stage of the cycle are rarely

62.5-GHz Phased-Array Channel Sounder for Double-Directional Angle Estimation

July 1, 2019
Peter B. Papazian, Derek Caudill, Camillo Gentile, Jack Chuang, Nada T. Golmie
The paper describes implementation of phased array antennas for use in a wideband channel sounding system. The antennas are 62.5 GHz prototypes, utilizing SiGe chips on a printed circuit-board. Each board consists of two 16-element series-fed patch array

Omnidirectional Channel Sounder with Phased-Array Antennas for 5G Mobile Communications

July 1, 2019
Derek Caudill, Peter B. Papazian, Camillo Gentile, Jack Chuang, Nada T. Golmie
We describe the first, to our knowledge, 60-GHz channel sounder with phased-array antennas found in literature. The system features a 1-GHz bandwidth and measures the angle-of-departure / angle-of-arrival of channel multipath components by sweeping the

System Distortion Model for the Cross-Validation of Millimeter-Wave Channel Sounders

April 1, 2019
Camillo A. Gentile, Andreas Molisch, Jack Chuang, Anuraag Bodi, Anmol Bhardwaj, Ozgur Ozdemir, Ismail Guvenc, Zihang Cheng, Thomas Choi, Robert Mueller
Because millimeter-wave directional channel measurements are time-consuming and expensive to collect, there is considerable interest in combining measurement data obtained with different channel sounders in order to yield more comprehensive datasets. The

Methodology for Multipath-Component Tracking in Millimeter-Wave Channel Modeling

March 1, 2019
Chiehping Lai, Roy Sun, Camillo Gentile, Peter B. Papazian, Jian Wang, Jelena Senic
In this paper, we describe an extensive channel-measurement campaign - including 325 unique transmitter-receiver configurations - conducted in a lecture room with our 3D double- directional 60-GHz channel sounder. The receiver was mounted on a mobile robot

EMC and Metrology Challenges for 5G and Beyond

December 7, 2018
Perry F. Wilson, Catherine A. Remley, William F. Young, Camillo A. Gentile, John M. Ladbury, Dylan F. Williams
The potential to connect people and devices anywhere and anytime is driving the development and deployment of a multitude of wireless systems. Wireless connectivity is central to advanced communication technologies, the internet of things (IoT), the smart

Millimeter-Wave Channel Measurement and Modeling: A NIST Perspective

December 7, 2018
Camillo A. Gentile, Peter B. Papazian, Nada T. Golmie, Catherine A. Remley, Peter G. Vouras, Jelena Senic, Jian Wang, Jack Chuang, Ruoyu Sun
The exponential increase in wireless data transmission from smartphones has led to the saturation of the sub-6-GHz bands, forcing cellular providers to migrate to the millimeter-wave (mmWave) regime for 5G. Although available channel bandwidths will grow

Millimeter-Wave Propagation Channels vs. Synthetic Beamwidth

December 7, 2018
Roy Sun, Camillo A. Gentile, Jelena Senic, Peter G. Vouras, Peter B. Papazian, Nada T. Golmie, Catherine A. Remley
High-gain narrow-beam antennas or beamformed antenna arrays will likely be used in millimeter- wave (mmWave) bands and 5G to mitigate the high path loss. Since many multipath components may be excluded by the narrow beam, the mmWave propagation channels

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

May 1, 2018
Camillo A. 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

Angle- and Delay-Dispersion Characteristics in a Hallway and Lobby at 60 GHz

April 9, 2018
Roy Sun, Peter B. Papazian, Jelena Senic, Camillo A. Gentile, Catherine A. Remley
In this paper, we present results from measurement data collected in a hallway and lobby up to 33 meters in line-of-sight and non-line-of-sight conditions. The data was collected using a custom double-directional 60 GHz channel sounder. By tracking the

Unsupervised Clustering for Millimeter-Wave Channel Propagation Modeling

February 12, 2018
Jian Wang, Camillo A. Gentile, Jelena Senic, Roy Sun, Peter B. Papazian
We have designed and assembled millimeter-wave channel sounders at 28, 60, and 83 GHz. They can measure the three-dimensional (azimuth and elevation) double-directional angle (angle-of- departure and angle-of-arrival) of channel multipath components as

Increasing Public Safety Broadband Network Resiliency Through Traffic Control

February 1, 2018
Richard A. Rouil, Wesley D. Garey, Camillo A. Gentile, Nada T. Golmie
Long Term Evolution (LTE)-based cellular networks are being deployed around the world to provide public safety with enhanced capabilities and access to broadband technology. In the United States, the First Responder Network Authority (FirstNet) is on the