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In future wireless communication systems, millimeter waves (mmWaves) will play an important role in meeting high data rates. However, due to their short wavelengths, these mmWaves present high propagation losses and are highly attenuated by…

Networking and Internet Architecture · Computer Science 2025-01-16 Mbissane Dieng , Gheorghe Zaharia , Ghaïs El Zein , Raphaël Gillard , Renaud Loison

Millimeter wave (mmWave) technology is expected to dominate the future 5G networks mainly due to large spectrum available at these frequencies. However, coverage deteriorates significantly at mmWave frequencies due to higher path loss,…

Signal Processing · Electrical Eng. & Systems 2018-05-29 Wahab Khawaja , Ozgur Ozdemir , Yavuz Yapici , Ismail Guvenc , Yuichi Kakishima

The future 5G networks are expected to use millimeter wave (mmWave) frequency bands to take advantage of large unused spectrum. However, due to the high path loss at mmWave frequencies, coverage of mmWave signals can get severely reduced,…

Signal Processing · Electrical Eng. & Systems 2019-05-14 Wahab Khawaja , Ozgur Ozdemir , Yavuz Yapici , Fatih Erden , Martins Ezuma , Ismail Guvenc

The emerging 5G and future 6G technologies are envisioned to provide higher bandwidths and coverage using millimeter wave (mmWave) and sub-Terahertz (THz) frequency bands. The growing demand for higher data rates using these bands can be…

Signal Processing · Electrical Eng. & Systems 2023-06-27 Ashwini Pondeycherry Ganesh , Wahab Khawaja , Ozgur Ozdemir , Ismail Guvenc , Hiroyuki Nomoto , Yasuaki Ide

The availability of large unused spectrum at millimeter wave (mmWave) frequency bands has steered the future 5G research towards these bands. However, mmWave signals are attenuated severely in the non-lineof-sight (NLOS) scenarios, thereby…

Signal Processing · Electrical Eng. & Systems 2018-11-20 Wahab Ali Gulzar Khawaja , Ozgur Ozdemir , Fatih Erden , Ismail Guvenc , Martins Ezuma , Yuichi Kakishima

The future 5G networks are expected to use millimeter wave (mmWave) frequency bands, mainly due to the availability of large unused spectrum. However, due to high path loss at mmWave frequencies, coverage of mmWave signals can get severely…

Signal Processing · Electrical Eng. & Systems 2018-08-21 Wahab Khawaja , Ozgur Ozdemir , Yavuz Yapici , Ismail Guvenc , Martins Ezuma , Yuichi Kakishimay

One of the critical challenges of operating with the terahertz or millimeter-wave wireless networks is the necessity of at least a strong non-line-of-sight (NLoS) reflected path to form a stable link. Recent studies have shown that an…

Signal Processing · Electrical Eng. & Systems 2022-03-16 Chethan K. Anjinappa , Ashwini P. Ganesh , Ozgur Ozdemir , Kris Ridenour , Wahab Khawaja , Ismail Guvenc , Hiroyuki Nomoto , Yasuaki Ide

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

Due to large reflection and diffraction losses in the THz band, it is arguable to achieve reliable links in the none-line-of-sight (NLoS) cases. Intelligent reflecting surfaces, although are expected to solve the blockage problem and…

Information Theory · Computer Science 2023-06-14 Yuanbo Li , Yiqin Wang , Yi Chen , Ziming Yu , Chong Han

New millimeter-wave wireless communication systems can be strongly impacted by the blockage introduced by the human body. At 60 GHz, the coverage of these systems is relatively limited due to high propagation losses. Thus, beamforming…

Signal Processing · Electrical Eng. & Systems 2025-01-16 Mbissane Dieng , Gheorghe I. Zaharia , Ghaïs El Zein

This paper present the results from a 28 GHz channel sounding campaign performed to investigate the effects of outdoor to indoor penetration on the wireless propagation channel characteristics for an urban microcell in a fixed wireless…

Information Theory · Computer Science 2017-11-02 C. Umit Bas , Rui Wang , Thomas Choi , Sooyoung Hur , Kuyeon Whang , Jeongho Park , Jianzhong Zhang , Andreas F. Molisch

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

Wireless channel measurement results for 60 GHz within a closed metal cabinet are provided. A metal cabinet is chosen to emulate the environment within a mechatronic system, which have metal enclosures in general. A frequency domain…

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

28 GHz outdoor-indoor coverage into modern office buildings with high thermal efficiency windows is found to be severely limited due to 46 dB median penetration loss at normal incidence and additional 15 dB median oblique incidence loss.…

Networking and Internet Architecture · Computer Science 2024-01-09 Dmitry Chizhik , Jinfeng Du , Reinaldo Valenzuela , Andrea Bedin , Martti Moisio , Rodolfo Feick

Wireless communication using fully passive metal reflectors is a promising technique for coverage expansion, signal enhancement, rank improvement and blind-zone compensation, thanks to its appealing features including zero energy…

Information Theory · Computer Science 2022-11-17 Zhi Yu , Chao Feng , Yong Zeng , Teng Li , Shi Jin

This paper provides indoor reflection, scattering, transmission, and large-scale path loss measurements and models, which describe the main propagation mechanisms at millimeter wave and Terahertz frequencies. Channel properties for common…

Signal Processing · Electrical Eng. & Systems 2019-12-04 Yunchou Xing , Ojas Kanhere , Shihao Ju , Theodore S. Rappaport

mm-waves are envisaged as key enabler for 5G and 6G wireless communications, thanks to the wider bandwidth and to the possibility of implementing large-scale antenna arrays and new advanced transmission techniques, such as massive MIMO and…

Signal Processing · Electrical Eng. & Systems 2022-10-14 Leonardo Possenti , Marina Barbiroli , Enrico M. Vitucci , Franco Fuschini , Mattia Fosci , Vittorio Degli-Esposti

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

Millimeter-wave (mmWave) communication enables multi-gigabit-per-second data rates but is highly susceptible to path loss and blockage, especially indoors. Many indoor settings, however, include naturally occurring specular surfaces such as…

Networking and Internet Architecture · Computer Science 2025-11-14 Raj Sai Sohel Bandari , Amod Ashtekar , Omar Ibrahim , Mohammed E. Eltayeb
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