Publications

Displaying 1 - 8 of 8

Raytracing Digital Trees at Millimeter-Wave: Calibration Against 60 GHz Channel Measurements in Summer and Winter

December 19, 2023

Author(s)

Chiehping Lai, Jelena Senic, Camillo Gentile, Nada T. Golmie

Accurate channel propagation modeling of foliage is critical to the design and deployment of wireless networks, given its pervasive nature in rural, suburban, and urban environments. Its blockage effects can be particularly devastating at millimeter-wave

Measuring the Impact of Beamwidth and Bandwidth on the Wide-Sense Stationarity of Millimeter-Wave Channels

September 26, 2023

Author(s)

Anmol Bhardwaj, Jack Chuang, Camillo Gentile, Chiehping Lai

A wireless channel is wide-sense stationary (WSS) when the mean and autocorrelation of its small-scale fading are displacement invariant. This occurs when the channel is rich in propagation paths – their complex summation averages out any displacement

Quasi-Deterministic Channel Propagation Model for 60 GHz Urban Wi-Fi Access From Light Poles

April 29, 2022

Author(s)

Chiehping Lai, Jian Wang, Jelena Senic, Neeraj Varshney, Camillo Gentile

There is strong impetus by the Telecom Infra Project to exploit the 60 GHz unlicensed band for public Wi-Fi in urban environments, by installing access points on light poles. Although many 60 GHz urban channel measurements have been recorded to date, they

Anaylsing the 3GPP Spatial Consistency Procedure through Channel Measurements

October 21, 2021

Author(s)

Camillo Gentile, Chiehping Lai

Millimeter-wave channel measurements for a meeting room, lecture room and open plan office floor were used to analyse and model the spatial consistency of channel clusters. Particularly, how the angle of arrivals and delays of extracted multi-path

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

April 16, 2021

Author(s)

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

Quasi-Deterministic Channel Model for mmWave: Mathematical Formalization and Validation

January 25, 2021

Author(s)

Chiehping Lai, Jian Wang, Camillo Gentile, Nada T. Golmie

5G and beyond networks will use, for the first time, the millimeter wave (mmWave) spectrum for mobile communications. An accurate performance evaluation is fundamental for the design of reliable mmWave networks, with the accuracy depending on the fidelity

Calibration of Ray-Tracing with Diffuse Scattering against 28-GHz Directional Urban Channel Measurements

November 18, 2020

Author(s)

Camillo Gentile, Jelena Senic, Chiehping Lai, Derek Caudill, Jack Chuang, Nada Golmie

This paper describes the calibration of the Volcano ray-tracing engine against channel measurements collected in an urban environment with a 28 GHz directional channel sounder. Channel multi-path components were extracted from the measurements in the delay

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

March 1, 2019

Author(s)

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

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