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New spectrum allocations in the 4--8 GHz FR1(C) and 7--24 GHz FR3 mid-band frequency spectrum are being considered for 5G/6G cellular deployments. This paper presents results from the world's first comprehensive indoor hotspot (InH)…

Signal Processing · Electrical Eng. & Systems 2024-05-08 Dipankar Shakya , Mingjun Ying , Theodore S. Rappaport , Hitesh Poddar , Peijie Ma , Yanbo Wang , Idris Al-Wazani

To fully exploit the millimeter-wave bands for the fifth generation cellular systems, an accurate understanding of the channel propagation characteristics is required, and hence extensive measurement campaigns in different environments are…

Signal Processing · Electrical Eng. & Systems 2019-10-22 Fatih Erden , Ozgur Ozdemir , Ismail Guvenc

This paper presents key parameters including the line-of-sight (LOS) probability, large-scale path loss, and shadow fading models for the design of future fifth generation (5G) wireless communication systems in urban macro-cellular (UMa)…

Information Theory · Computer Science 2016-11-17 Shu Sun , Timothy A. Thomas , Theodore S. Rappaport , Huan Nguyen , Istvan Z. Kovacs , Ignacio Rodrigue

In this paper, we present new measurement results to model large-scale path loss, angular spread and channel sparsity at the sub-THz (141-145 GHz) band, for both indoor and outdoor scenarios. Extensive measurement campaigns have been…

Over the past few decades, attempts had been made to build a suitable channel prediction model to optimize radio transmission systems. It is particularly essential to predict the path loss due to the blockage of the signal, in indoor radio…

Signal Processing · Electrical Eng. & Systems 2020-12-17 Taewon Kang , Jiwon Seo

This paper contains measured data and empirical models for 2.5 & 60 GHz in-building propagation path loss and multipath delay spread. Path loss measurements were recorded using a broadband sliding correlator channel sounder which recorded…

Networking and Internet Architecture · Computer Science 2017-01-13 Christopher R. Anderson , Theodore S. Rappaort

It is becoming clear that 5G wireless systems will encompass frequencies from around 500 MHz all the way to around 100 GHz. To adequately assess the performance of 5G systems in these different bands, path loss (PL) models will need to be…

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, for the design of fifth generation (5G) wireless…

This paper presents large-scale path loss models based on extensive ultra-wideband millimeter-wave propagation measurements performed at 28 GHz and 73 GHz in three typical indoor office layouts -- namely: corridor, open-plan, and…

Information Theory · Computer Science 2016-02-23 George R. MacCartney , Sija Deng , Theodore S. Rappaport

This paper presents detailed radio propagation measurements for an indoor factory (InF) environment at 6.75 GHz and 16.95 GHz using a 1 GHz bandwidth channel sounder. Conducted at the NYU MakerSpace in the NYU Tandon School of Engineering…

Signal Processing · Electrical Eng. & Systems 2025-03-31 Mingjun Ying , Dipankar Shakya , Theodore S. Rappaport , Peijie Ma , Yanbo Wang , Idris Al-Wazani , Yanze Wu , Hitesh Poddar

Global allocations in the upper mid-band spectrum (4--24 GHz) necessitate a comprehensive exploration of the propagation behavior to meet the promise of coverage and capacity. This paper presents an extensive Urban Microcell (UMi) outdoor…

Fifth-generation (5G) cellular systems are likely to operate in the centimeter-wave (3-30 GHz) and millimeter-wave (30-300 GHz) frequency bands, where a vast amount of underutilized bandwidth exists world-wide. To assist in the research and…

Signal Processing · Electrical Eng. & Systems 2020-12-02 Ahmed Iyanda Sulyman , Abdulmalik Alwarafy , George R. MacCartney , Theodore S. Rappaport , Abdulhameed Alsanie

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 (ABG) model, the close-in (CI) free space reference distance…

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 2014-2020 in an indoor office environment. Side-by-side comparisons…

Information Theory · Computer Science 2021-10-26 Yunchou Xing , Theodore S. Rappaport , Amitava Ghosh

Adequate coverage with high gain antennas is key to realizing the full promise of the bandwidth available at mm/cm wave bands. We report extensive indoor measurements at 28 GHz (1000 links, 9.9 million individual power measurements, 10…

Information Theory · Computer Science 2020-02-05 Dmitry Chizhik , Jinfeng Du , Rodolfo Feick , Mauricio Rodriguez , Guillermo Castro , Reinaldo. A. Valenzuela

In most countries, small (<2 kg) and medium (<25 kg) size unmanned aerial vehicles (UAVs) must fly at low altitude, below 120 m, and with permanent radio communications with ground for control and telemetry. These communications links can…

Signal Processing · Electrical Eng. & Systems 2025-02-26 Cesar Briso , Cesar Calvo , Zhuangzhuang Cui , Lei Zhang , Youyun Xu

With the anticipated increase in the number of low power base stations (BSs) deployed in small cell networks, blockage effects becoming more sensitive on wireless transmissions over high spectrums, variable propagation fading scenarios make…

Networking and Internet Architecture · Computer Science 2016-12-19 Jiaqi Chen , Fen Bin , Xiaohu Ge , Qiang Li , Cheng-Xiang Wang

This letter presents a probabilistic omnidirectional millimeter-wave path loss model based on real-world 28 GHz and 73 GHz measurements collected in New York City. The probabilistic path loss approach uses a free space line-of-sight…

Information Theory · Computer Science 2016-11-17 Mathew K. Samimi , Theodore S. Rappaport , George R. MacCartney

This paper presents 28 GHz and 73 GHz millimeter- wave propagation measurements performed in a typical office environment using a 400 Megachip-per-second broadband sliding correlator channel sounder and highly directional steerable 15 dBi…

Information Theory · Computer Science 2016-11-17 Sijia Deng , Mathew K. Samimi , Theodore S. Rappaport

In the upcoming 5G communication, the millimeter-wave (mmWave) technology will play an important role due to its large bandwidth and high data rate. However, mmWave frequencies have higher free-space path loss (FSPL) in line-of-sight (LOS)…

Signal Processing · Electrical Eng. & Systems 2021-01-08 Kairui Du , Ozgur Ozdemir , Fatih Erden , Ismail Guvenc
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