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High Altitude Platform Stations (HAPS): Architecture and System Performance
Yunchou Xing, Frank Hsieh, Amitava Ghosh +1
High Altitude Platform Station (HAPS) has the potential to provide global wireless connectivity and data services such as high-speed wireless backhaul, industrial Internet of thing…
Millimeter Wave and sub-THz Indoor Radio Propagation Channel Measurements, Models, and Comparisons in an Office Environment
Yunchou Xing, Theodore S. Rappaport, Amitava Ghosh
This letter provides a comparison of indoor radio propagation measurements and corresponding channel statistics at 28, 73, and 140 GHz, based on extensive measurements from 2014-20…
Leveraging Sensing at the Infrastructure for mmWave Communication
Anum Ali, Nuria González-Prelcic, Robert W. Heath +1
Vehicle-to-everything (V2X) communication in the mmWave band is one way to achieve high data-rates for applications like infotainment, cooperative perception, and augmented reality…
Passive Radar at the Roadside Unit to Configure Millimeter Wave Vehicle-to-Infrastructure Links
Anum Ali, Nuria González-Prelcic, Amitava Ghosh
Millimeter wave (mmWave) vehicular channels are highly dynamic, and the communication link needs to be reconfigured frequently. In this work, we propose to use a passive radar rece…
Max-Min Rates in Self-backhauled Millimeter Wave Cellular Networks
Mandar N. Kulkarni, Amitava Ghosh, Jeffrey G. Andrews
This paper considers the following question for viable wide-area millimeter wave cellular networks. What is the maximum extended coverage area of a single fiber site using multi-ho…
Coexistence of 5G mmWave Users with Incumbent Fixed Stations over 70 and 80 GHz
Ghaith Hattab, Eugene Visotsky, Mark Cudak +1
Millimeter wave spectrum access over the 70GHz and 80GHz is central to unlocking gigabit connectivity and meeting the explosive growth of mobile traffic. A pressing question, howev…
Base Station Diversity Propagation Measurements at 73 GHz Millimeter-Wave for 5G Coordinated Multipoint (CoMP) Analysis
George R. MacCartney, Theodore S. Rappaport, Amitava Ghosh
This paper describes wideband (1 GHz) base station diversity and coordinated multipoint (CoMP)-style large-scale measurements at 73 GHz in an urban microcell open square scenario i…
Performance of Dynamic and Static TDD in Self-backhauled mmWave Cellular Networks
Mandar N. Kulkarni, Jeffrey G. Andrews, Amitava Ghosh
Initial deployments of millimeter wave (mmWave) cellular networks are likely to be enabled with self-backhauling. In this work, we propose a random spatial model to analyze uplink…
Indoor 5G 3GPP-like Channel Models for Office and Shopping Mall Environments
Katsuyuki Haneda, Lei Tian, Henrik Asplund +25
Future mobile communications systems are likely to be very different to those of today with new service innovations driven by increasing data traffic demand, increasing processing…
Investigation of Prediction Accuracy, Sensitivity, and Parameter Stability of Large-Scale Propagation Path Loss Models for 5G Wireless Communications
Shu Sun, Theodore S. Rappaport, Timothy A. Thomas +6
This paper compares three candidate large-scale propagation path loss models for use over the entire microwave and millimeter-wave (mmWave) radio spectrum: the alpha-beta-gamma (AB…
5G 3GPP-like Channel Models for Outdoor Urban Microcellular and Macrocellular Environments
Katsuyuki Haneda, Lei Tian, Yi Zheng +26
For the development of new 5G systems to operate in bands up to 100 GHz, there is a need for accurate radio propagation models at these bands that currently are not addressed by ex…
Propagation Path Loss Models for 5G Urban Micro- and Macro-Cellular Scenarios
Shu Sun, Theodore S. Rappaport, Sundeep Rangan +7
This paper presents and compares two candidate large-scale propagation path loss models, the alpha-beta-gamma (ABG) model and the close-in (CI) free space reference distance model,…
A Comparison of MIMO Techniques in Downlink Millimeter Wave Cellular Networks with Hybrid Beamforming
Mandar N. Kulkarni, Amitava Ghosh, Jeffrey G. Andrews
Large antenna arrays will be needed in future millimeter wave (mmWave) cellular networks, enabling a large number of different possible antenna architectures and multiple-input mul…
3D Channel Model in 3GPP
Bishwarup Mondal, Timothy A. Thomas, Eugene Visotsky +9
Multi-antenna techniques capable of exploiting the elevation dimension are anticipated to be an important air-interface enhancement targeted to handle the expected growth in mobile…
Adaptive Millimeter Wave Beam Alignment for Dual-Polarized MIMO Systems
Jiho Song, Junil Choi, Stephen G. Larew +3
Fifth generation wireless systems are expected to employ multiple antenna communication at millimeter wave (mmWave) frequencies using small cells within heterogeneous cellular netw…
Tractable Model for Rate in Self-Backhauled Millimeter Wave Cellular Networks
Sarabjot Singh, Mandar N. Kulkarni, Amitava Ghosh +1
Millimeter wave (mmW) cellular systems will require high gain directional antennas and dense base station (BS) deployments to overcome high near field path loss and poor diffractio…
Kronecker Product Correlation Model and Limited Feedback Codebook Design in a 3D Channel Model
Dawei Ying, Frederick W. Vook, Timothy A. Thomas +2
A 2D antenna array introduces a new level of control and additional degrees of freedom in multiple-input-multiple-output (MIMO) systems particularly for the so-called "massive MIMO…
Millimeter Wave Beamforming for Wireless Backhaul and Access in Small Cell Networks
Sooyoung Hur, Taejoon Kim, David J. Love +3
Recently, there has been considerable interest in new tiered network cellular architectures, which would likely use many more cell sites than found today. Two major challenges will…
Spectrum Sharing for Device-to-Device Communication in Cellular Networks
Xingqin Lin, Jeffrey G. Andrews, Amitava Ghosh
This paper addresses two fundamental and interrelated issues in device-to-device (D2D) enhanced cellular networks. The first issue is how D2D users should access spectrum, and we c…
Analytical Evaluation of Fractional Frequency Reuse for Heterogeneous Cellular Networks
Thomas D. Novlan, Radha Krishna Ganti, Arunabha Ghosh +1
Interference management techniques are critical to the performance of heterogeneous cellular networks, which will have dense and overlapping coverage areas, and experience high lev…