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Millimeter-wave (mm-wave) is a promising technique to enhance the network capacity and coverage of next-generation (5G) based on utilizing a great number of available spectrum resources in mobile communication. Improving the 5G network…

In this paper, we address inter-beam inter-cell interference mitigation in 5G networks that employ millimeter-wave (mmWave), beamforming and non-orthogonal multiple access (NOMA) techniques. Those techniques play a key role in improving…

网络与互联网体系结构 · 计算机科学 2021-03-10 Medhat Elsayed , Kevin Shimotakahara , Melike Erol-Kantarci

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 be i) providing backhaul to all of these cells and ii)…

信息论 · 计算机科学 2016-11-15 Sooyoung Hur , Taejoon Kim , David J. Love , James V. Krogmeier , Timothy A. Thomas , Amitava Ghosh

With the exponential growth of mobile data, there are increasing interests to deploy small cells in millimeter wave (mmWave) bands to underlay the conventional homogeneous macrocell network as well as in exploiting device-to-device (D2D)…

网络与互联网体系结构 · 计算机科学 2018-11-27 Yong Niu , Liren Yu , Yong Li , Zhangdui Zhong , Bo Ai , Sheng Chen

Sharing the spectrum among multiple operators seems promising in millimeter wave (mmWave) systems. One explanation is the highly directional transmission in mmWave, which reduces the interference caused by one network on the other networks…

信息论 · 计算机科学 2016-05-03 Abhishek K. Gupta , Ahmed Alkhateeb , Jeffrey G. Andrews , Robert W. Heath,

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 , Sundeep Rangan , Elza Erkip

Millimeter wave (mmWave) communication is expected to play an important role in next generation cellular networks, aiming to cope with the bandwidth shortage affecting conventional wireless carriers. Using side-information has been proposed…

信号处理 · 电气工程与系统科学 2017-11-09 Flavio Maschietti , David Gesbert , Paul de Kerret

Millimeter wave (mmWave) systems will likely employ large antenna arrays at both the transmitters and receivers. A natural application of antenna arrays is simultaneous transmission to multiple users, which requires multi-user precoding at…

信息论 · 计算机科学 2016-11-17 Ahmed Alkhateeb , Robert W. Heath , Geert Leus

We propose beam division multiple access (BDMA) with per-beam synchronization (PBS) in time and frequency for wideband massive multiple-input multiple-output (MIMO) transmission over millimeter-wave (mmW)/Terahertz (THz) bands. We first…

信息论 · 计算机科学 2017-06-22 Li You , Xiqi Gao , Geoffrey Ye Li , Xiang-Gen Xia , Ni Ma

The millimeter wave (mmWave) band has the potential to provide high throughput among wearable devices. When mmWave wearable networks are used in crowded environments, such as on a bus or train, antenna directivity and orientation hold the…

信息论 · 计算机科学 2015-12-03 Kiran Venugopal , Matthew C. Valenti , Robert W. Heath

A future millimeter-wave (mmWave) massive multiple-input and multiple-output (MIMO) system may serve hundreds or thousands of users at the same time; thus, research on multiple access technology is particularly important.Moreover, due to…

信息论 · 计算机科学 2023-05-26 Peng Jiang , Pengcheng Zhu , Jiamin Li , Dongming Wang

The millimeter wave (mmWave) bands are likely to play a significant role in next generation cellular systems due to the possibility of very high throughput thanks to the availability of massive bandwidth and high-dimensional antennas.…

Multicarrier-low density spreading multiple access (MC-LDSMA) is a promising multiple access technique that enables near optimum multiuser detection. In MC-LDSMA, each user's symbol spread on a small set of subcarriers, and each subcarrier…

信息论 · 计算机科学 2017-05-15 Mohammed Al-Imari , Muhammad Ali Imran , Pei Xiao

The new frontier in cellular networks is harnessing the enormous spectrum available at millimeter wave (mmWave) frequencies above 28 GHz. The challenging radio propagation characteristics at these frequencies, and the use of highly…

网络与互联网体系结构 · 计算机科学 2016-06-08 Marco Mezzavilla , Sanjay Goyal , Shivendra Panwar , Sundeep Rangan , Michele Zorzi

In a cell-free massive MIMO architecture a very large number of distributed access points simultaneously and jointly serves a much smaller number of mobile stations; a variant of the cell-free technique is the user-centric approach, wherein…

信号处理 · 电气工程与系统科学 2019-03-28 Mario Alonzo , Stefano Buzzi , Alessio Zappone , Ciro D'Elia

Cell-free widely distributed massive multiple-input multiple-output (MIMO) systems utilize radio units spread out over a large geographical area. The radio signal of a user equipment (UE) is coherently detected by a subset of radio units…

信号处理 · 电气工程与系统科学 2022-08-31 David Löschenbrand , Markus Hofer , Laura Bernadó , Stefan Zelenbaba , Thomas Zemen

Millimeter wave (mmWave) communications have recently attracted large research interest, since the huge available bandwidth can potentially lead to rates of multiple Gbps (gigabit per second) per user. Though mmWave can be readily used in…

This paper considers the problem of beam alignment in a cell-free massive MIMO deployment with multiple access points (APs) and multiple user equipments (UEs) simultaneously operating in the same millimeter wave frequency band. Assuming the…

信息论 · 计算机科学 2022-04-26 Stefano Buzzi , Carmen D'Andrea , Maria Fresia , Xiaofeng Wu

Millimeter-wave (mmWave) frequency bands offer a new frontier for next-generation wireless networks, popularly known as 5G, to enable multi-gigabit communication; however, the availability and reliability of mmWave signals are significantly…

网络与互联网体系结构 · 计算机科学 2018-12-20 Biswa P. S. Sahoo , Chung-Wei Weng , Hung-Yu Wei

The millimeter wave (mmWave) frequencies offer the potential of orders of magnitude increases in capacity for next-generation cellular systems. However, links in mmWave networks are susceptible to blockage and may suffer from rapid…

网络与互联网体系结构 · 计算机科学 2020-04-27 Marco Giordani , Marco Mezzavilla , Sundeep Rangan , Michele Zorzi