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Multiple-input multiple-output (MIMO) millimeter wave (mmWave) communication is a key technology for next generation wireless networks. One of the consequences of utilizing a large number of antennas with an increased bandwidth is that…

信号处理 · 电气工程与系统科学 2020-02-19 Mingjin Wang , Feifei Gao , Mark F. Flanagan , Nir Shlezinger , Yonina C. Eldar

The millimeter wave (mmWave) bands offer the possibility of orders of magnitude greater throughput for fifth generation (5G) cellular systems. However, since mmWave signals are highly susceptible to blockage, channel quality on any one…

网络与互联网体系结构 · 计算机科学 2018-09-07 Michele Polese , Marco Giordani , Marco Mezzavilla , Sundeep Rangan , Michele Zorzi

Mobile operators are poised to leverage millimeter wave technology as 5G evolves, but despite efforts to bolster their reliability indoors and outdoors, mmWave links remain vulnerable to blockage by walls, people, and obstacles. Further,…

网络与互联网体系结构 · 计算机科学 2022-09-27 Kun Woo Cho , Mohammad H. Mazaheri , Jeremy Gummeson , Omid Abari , Kyle Jamieson

With the severe spectrum shortage in conventional cellular bands, millimeter wave (mmW) frequencies between 30 and 300 GHz have been attracting growing attention as a possible candidate for next-generation micro- and picocellular wireless…

网络与互联网体系结构 · 计算机科学 2014-04-29 Mustafa Riza Akdeniz , Yuanpeng Liu , Mathew K. Samimi , Shu Sun , Sundeep Rangan , Theodore S. Rappaport , Elza Erkip

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…

信号处理 · 电气工程与系统科学 2018-08-21 Wahab Khawaja , Ozgur Ozdemir , Yavuz Yapici , Ismail Guvenc , Martins Ezuma , Yuichi Kakishimay

Compared to the current wireless communication systems, millimeter wave (mm-Wave) promises a wide range of spectrum. As viable alternatives to existing mm-Wave channel models, various map-based channel models with different modeling methods…

信息论 · 计算机科学 2019-07-11 Yeon-Geun Lim , Yae Jee Cho , MinSoo Sim , Younsun Kim , Chan-Byoung Chae , Reinaldo A. Valenzuela

Channel acquisition is one of the main challenges for the deployment of reconfigurable intelligent surface (RIS) aided communication systems. This is because an RIS has a large number of reflective elements, which are passive devices with…

信号处理 · 电气工程与系统科学 2023-02-16 Jie Chen , Ying-Chang Liang , Hei Victor Cheng , Wei Yu

The premise of massive multiple-input multiple-output (MIMO) is based around coherent transmission and detection. Majority of the vast literature on massive MIMO presents performance evaluations over simplified statistical propagation…

信息论 · 计算机科学 2020-03-04 Harsh Tataria , Fredrik Tufvesson

The tremendous bandwidth available in the millimeter wave (mmW) frequencies between 30 and 300 GHz have made these bands an attractive candidate for next-generation cellular systems. However, reliable communication at these frequencies…

信息论 · 计算机科学 2014-10-20 Parisa A. Eliasi , Sundeep Rangan , Theodore S. Rappaport

In this paper, a framework of beamspace channel estimation in millimeter wave (mmWave) massive MIMO system is proposed. The framework includes the design of hybrid precoding and combining matrix as well as the search method for the largest…

信号处理 · 电气工程与系统科学 2019-01-08 Wenyan Ma , Chenhao Qi

Rapidly fading channels caused by pedestrians in dense urban environments will have a significant impact on millimeter-wave (mmWave) communications systems that employ electrically-steerable and narrow beamwidth antenna arrays. A…

信息论 · 计算机科学 2017-11-08 George R. MacCartney , Theodore S. Rappaport , Sundeep Rangan

Millimeter (mm) wave massive MIMO has the potential for delivering orders of magnitude increases in mobile data rates, with compact antenna arrays providing narrow steerable beams for unprecedented levels of spatial reuse. A fundamental…

信号处理 · 电气工程与系统科学 2018-12-05 Maryam Eslami Rasekh , Upamanyu Madhow

This paper investigates the robust wideband channel estimation problem in the millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems. In such a scenario, the beam squint effect that the array response vectors vary…

信号处理 · 电气工程与系统科学 2024-09-25 Li Ge , Lin Chen , Xue Jiang , Weifeng Zhu , Qibo Qin , Xingzhao Liu

There has been an increasing interest in the millimeter wave (mmW) frequency regime in the design of next-generation wireless systems. The focus of this work is on understanding mmW channel properties that have an important bearing on the…

The millimeter wave (mmWave) band will be exploited to address the growing demand for high data rates and low latency. The higher frequencies, however, are prone to limitations on the propagation of the signal in the environment. Thus,…

网络与互联网体系结构 · 计算机科学 2024-12-03 Paolo Testolina , Mattia Lecci , Alessandro Traspadini , Michele Zorzi

Millimeter wave (mmWave) communication represents one of the main innovations of the next generation of wireless technologies, allowing users to reach unprecedented data rates. To overcome the high path loss at mmWave frequencies, these…

信号处理 · 电气工程与系统科学 2020-11-12 Mattia Lecci , Tommaso Zugno , Silvia Zampato , Michele Zorzi

This paper investigates a novel research direction that leverages vision to help overcome the critical wireless communication challenges. In particular, this paper considers millimeter wave (mmWave) communication systems, which are…

信息论 · 计算机科学 2019-11-18 Muhammad Alrabeiah , Andrew Hredzak , Ahmed Alkhateeb

The use of higher frequencies and MIMO is important in many 5G use cases. However, the available channel models for millimeter waves (mmWaves) currently demand investigation and the number of measurements is still limited. Using simulators…

信号处理 · 电气工程与系统科学 2019-08-21 Isabela Trindade , Brenda Vilas Boas , Aldebaro Klautau

Ultrasound Localization Microscopy (ULM) has recently enabled the mapping of the cerebral vasculature in vivo with a resolution ten times smaller than the wavelength used, down to ten microns. However, with frame rates up to 20.000 frames…

医学物理 · 物理学 2023-10-23 Erwan Hardy , Jonathan Poree , Hatim Belgharbi , Chloe Bourquin , Frederic Lesage , Jean Provost

The sparsity of millimeter wave (mmWave) channels in the angular and temporal domains is beneficial to channel estimation, while the associated channel parameters can be utilized for localization. However, line-of-sight (LoS) blockage poses…

信号处理 · 电气工程与系统科学 2024-02-27 Kunlun Li , Jiguang He , Mohammed El-Hajjar , Lie-Liang Yang