Submit to Energies Review for Energies Propose a Special Issue

Journal Browser

Wireless Communication Technologies in 5G and 6G

Print Special Issue Flyer
Special Issue Editors
Special Issue Information
Keywords
Published Papers

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A1: Smart Grids and Microgrids".

Deadline for manuscript submissions: closed (20 March 2023) | Viewed by 15341

Share This Special Issue

Special Issue Editors

Dr. Abdellah Chehri

E-Mail Website
Guest Editor

1. Department of Applied Sciences, University of Quebec in Chicoutimi, 555, boul. de l’Université, Chicoutimi, QC G7H 2B1, Canada
2. School of Information Technology and Engineering, University of Ottawa, 800 King Edward Avenue Ottawa, Ottawa, ON K1N 6N5, Canada
Interests: wireless communication; IoT; 5G; 6G; ultra-reliable and low latency (URLLC) networks; next generation of backhaul networks
Special Issues, Collections and Topics in MDPI journals

Dr. Gwanggil Jeon

E-Mail Website
Guest Editor

Department of Embedded Systems Engineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
Interests: remote sensing; deep learning; artificial intelligence; image processing; signal processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fifth-generation (5G) mobile technology is expected to be operational by 2020 and is currently attracting extensive research interest from both industry and academia, with a specific focus on its opportunities and challenges, as well as the research developments which are enabling 5G technology. This is particularly important as, with 5G technology only just now being rolled out, work has already begun on the sixth-generation (6G) standard. In March 2019, a global 6G Summit event was held in Finland, and 6G is expected to bring forth a great revolution in communication technologies as it will enable the Internet of Everything. Compared with 5G technology, the future 6G technology is expected to allow even higher throughputs, even shorter latency times, greater component density, and the mass integration of artificial intelligence in all segments constituting the network.

As we move toward next-generation 6G mobile radio, many challenges will need to be fully mastered concerning individual components and their interactions. There are four research areas in 6G: wireless connectivity, devices and circuit technology, distributed computing, and services and applications.

This Special Issue encourages high-quality papers that advance the state of the art and practical applications of future 6G technologies. This feature topic will bring together academic and industrial researchers to identify and discuss the significant opportunities and challenges in applying 6G technologies to the understanding and design of modern network systems.

Dr. Abdellah Chehri
Dr. Gwanggil Jeon
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

Terahertz communications and sensing
Mobile edge networking and computing
Massive millimeter wave (mmWave) technologies
Terahertz (THz) and quantum nanodevices and circuits
6G applications such as robotics, UAVs, autonomous vehicles
Machine learning for 5G and 6G
5G testbeds
New security concepts/new network architectures

Published Papers (5 papers)

Download All Papers

Research

Jump to: Review

19 pages, 9245 KiB

Open AccessFeature PaperArticle

Capacity Enhancement for Free Space Optics Transmission System Using Orbital Angular Momentum Optical Code Division Multiple Access in 5G and beyond Networks

by Somia A. Abd El-Mottaleb, Mehtab Singh, Abdellah Chehri, Hassan Yousif Ahmed, Medien Zeghid and Akhtar Nawaz Khan

Energies 2022, 15(19), 7100; https://doi.org/10.3390/en15197100 - 27 Sep 2022

Cited by 29 | Viewed by 1820

Abstract

This paper introduces a novel free space optics (FSO) communication system for future-generation high-speed networks. The proposed system integrates orbital angular momentum (OAM) modes with an optical code division multiple access (OCDMA) technique. Two OAM beams are used ( [...] Read more.

L G_{0, 0}

and

L G_{0, 10}

), each of which is used for transmitting three independent channels. Each channel is assigned by fixed right shift (FRS) codes and carries 10 Gbps of information data. The performance of the proposed model is evaluated under different foggy and dust storm conditions. Furthermore, the performance of two cities with different geographical locations, Alexandria city in Egypt and Srinagar city in India, is investigated to demonstrate its ability to be implemented in future generations. Bit error rate (BER), eye diagrams, received optical power (ROP), and channel capacity are used for studying the performance of the proposed system. The observed simulation results show successful transmission of 60 Gbps overall capacity with the longest propagation FSO range for Alexandria city, which is 1400 m. Because dust storms have a large attenuation when compared to different foggy conditions, the proposed model had the shortest propagation range of 315 m under low dust (LD), 105 m under moderate dust (MD), and 40 m under heavy dust (HD). Furthermore, the cloudy weather conditions that affect Srinagar city, which is considered a hilly area, make our suggested model achieve 1000 m. Full article

(This article belongs to the Special Issue Wireless Communication Technologies in 5G and 6G)

► Show Figures

Figure 1

11 pages, 13880 KiB

Open AccessArticle

Performance of Reconfigurable Antenna Fabricated on Flexible and Nonflexible Materials for Band Switching Applications

by B. R. Sanjeeva Reddy, Naresh K. Darimireddy, Chan-Wang Park and Abdellah Chehri

Energies 2021, 14(9), 2553; https://doi.org/10.3390/en14092553 - 29 Apr 2021

Cited by 11 | Viewed by 1973

Abstract

In this article, a novel frequency slot-based switchable antenna fabricated on flexible and nonflexible materials is presented for suitable reconfigurable radiations of Bluetooth, WiMAX, and upper WLAN applications. Initially, the performance of this structure was simulated using a CST^TM simulator and evaluated experimentally using a nonflexible FR4 structure. The same antenna was implemented on a flexible (jean) substrate with a relative permittivity of 1.7. The proposed textile antenna prototypes were fabricated by optimal dimensions of an E-shaped slot with a variation on the shape of the ground layer, integrated using a crossed T-shaped strip with ON/OFF switchable state operations. The proposed antenna prototype is compact (20 × 20 mm²), providing switchable radiations with tri bands, has frequencies ranged at 2.36–2.5 GHz for Bluetooth, 3.51–3.79 GHz and 5.47–5.98 GHz for the distinct bands of WiMAX and WLAN, respectively, as well as part of UWB operations. Full article

(This article belongs to the Special Issue Wireless Communication Technologies in 5G and 6G)

► Show Figures

Figure 1

17 pages, 4355 KiB

Open AccessArticle

Researching on the Deterministic Channel Models for Urban Microcells Considering Diffraction Effects

by Chunzhi Hou, Zhensen Wu, Jiaji Wu, Yunhua Cao, Leke Lin, Xiangming Guo and Changsheng Lu

Energies 2021, 14(8), 2143; https://doi.org/10.3390/en14082143 - 12 Apr 2021

Cited by 3 | Viewed by 1807

Abstract

Deterministic channel models, such as the three-dimensional (3D) ray launching method, can yield wireless channel parameters. In the non-line-of-sight (NLOS) propagation, the outdoor 3D ray launching method that considers diffraction effects is more accurate than the one that does not. While considering the diffraction effect, obtaining the diffraction point is challenging. This paper proposed a method for determining diffracted rays using the receiving sphere method in 3D ray launching. The diffraction point is determined using the shortest distance method between two straight lines, and the signal loss from the transmitting to receiving antennas is obtained. Furthermore, experiments on a millimeter wave in a microcell scenario were performed. The test results of the wireless channel parameters were compared with theoretical calculations. The results obtained via the 3D ray launching method that only considers the specular reflection and direct rays agree with the experimental results in the line-of-sight (LOS); furthermore, they generate larger errors compared with the experimental results in the NLOS. The results obtained via the 3D ray launching method that considers the direct ray, reflected rays, and diffracted rays agree with the experimental results both in the LOS and NLOS. Therefore, the 3D ray launching method that considers the diffraction effect can improve the prediction accuracy of the millimeter wave channel parameters in a microcell. Full article

(This article belongs to the Special Issue Wireless Communication Technologies in 5G and 6G)

► Show Figures

Figure 1

Review

Jump to: Research

28 pages, 2116 KiB

Open AccessReview

Reconfigurable Intelligent Surfaces for 5G and beyond Wireless Communications: A Comprehensive Survey

by Teena Sharma, Abdellah Chehri and Paul Fortier

Energies 2021, 14(24), 8219; https://doi.org/10.3390/en14248219 - 07 Dec 2021

Cited by 28 | Viewed by 5724

Abstract

With possible new use cases and demanding requirements of future 5th generation (5G) and beyond cellular networks, the future of mobile communications sounds promising. However, the propagation medium has been considered a randomly acting agent between the transmitter and the receiver. With the advent of the digital age of wireless communications, the received signal quality is degrading due to the uncontrollable interactions of the transmitted radio waves with the surrounding artifacts. This paper presents a comprehensive literature review on reconfigurable intelligent surfaces (RISs) and assisted application areas. With the RIS, the network operators can control radio waves’ scattering, reflection, and refraction characteristics by resolving the harmful properties of environmental wireless propagation. Further, the RIS can effectively control the wavefront, such as amplitude, phase, frequency, and even polarization, without requiring complex encoding, decoding, or radio wave processing techniques. Motivated by technological advances, the metasurfaces, reflectarrays, phase shift, and liquid crystals are potential candidates for implementing RIS. Thus, they can be considered the front runner for realizing the 5G and beyond network. Furthermore, the current research activities in the evolving field of wireless networks operated by RIS are reviewed and discussed thoroughly. Finally, to fully explore the potential of RISs in wireless networks, the fundamental research issues to be addressed have been discussed. Full article

(This article belongs to the Special Issue Wireless Communication Technologies in 5G and 6G)

► Show Figures

Figure 1

17 pages, 2339 KiB

Open AccessReview

A Survey on Over-The-Air Linearization Methods for MIMO Systems

by Marina Jordão, Rafael Caldeirinha, Arnaldo S. R. Oliveira and Nuno Borges Carvalho

Energies 2021, 14(8), 2225; https://doi.org/10.3390/en14082225 - 16 Apr 2021

Cited by 3 | Viewed by 1853

Abstract

Transmitter antenna arrays are typically coupled to several RF chains, which imposes stringent requirements on the linearization of each power amplifier (PA) present in the system. For this and other reasons discussed in this work, Over-the-air (OTA) linearization methods are considered to linearize transmitter antenna arrays in 5G scenarios. However, several factors need to be considered when applying OTA linearization methods. In this paper, an extended critical review of validated OTA linearization methods is presented. The main goal is to point out and discuss the most prominent methods, in order to determine which one is the most suitable for a specific application. In particular, analysis for each method is performed and, subsequently, their benefits and the disadvantages are systematically discussed. This is sought to fill-in a gap in the scientific literarure and, thus, to help radio-frequency engineers in the implementation of OTA digital pre-distortion (DPD) techniques for multiple input multiple output (MIMO) systems. Full article

(This article belongs to the Special Issue Wireless Communication Technologies in 5G and 6G)

► Show Figures