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2nd Edition of 5G Networks and Wireless Communication Systems
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2nd Edition of 5G Networks and Wireless Communication Systems

A special issue of Information (ISSN 2078-2489). This special issue belongs to the section "Information and Communications Technology".

Deadline for manuscript submissions: closed (30 April 2026) | Viewed by 17168

Special Issue Editors

Dr. Theofilos Chrysikos

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, University of Patras, GR26504 Patras, Greece
Interests: 5G and beyond; convergence of optical and wireless networks; wireless broadband systems; channel modeling
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Michael Paraskevas

E-Mail Website
Guest Editor
1. Electrical and Computer Engineering Department, University of Peloponnese, GR26334 Patras, Greece
2. Computer Technology Institute and Press “Diofantus”, GR26504 Patras, Greece
Interests: signal processing; information theory; digital communications; machine learning; digital transformation

Special Issue Information

Dear Colleagues,

The MDPI journal Information is inviting submissions to the second volume of this Special Issue on “5G Networks and Wireless Communication Systems”.

The Fifth Generation is entering its mature phase of deployment. Fall/Winter 2023 marks the evaluation of the mature phase of 5G infrastructure, terminal equipment, performance and the expansion of 5G core, access and front-end technologies across a spectrum of applications and services, including new paradigms such as Public Safety networks, e-gov services and more.

The mature deployment of 5G still needs to address many persistent challenges, including spectrum assignment, resource allocation, IPv6-based user classification over content, NfV and cloud, mobile-edge computing, and metro/core optical backhaul, as well as access/fronthaul for implementing “fiber to the antenna” broadband connectivity, RRH deployment over urban obstacle-dense topologies, cell densification, and optimal power control. In addition, the smart world applications and solutions that 5G is meant to implement and support range from mobile health to smart cities and transportation, which have many issues and challenges. Use cases and case studies from test-bed developments and real-world large-scale deployments provide very significant empirical data. This allows operators and engineers to re-assess their knowledge of techno-economic metrics and re-arrange their priorities in order to optimize the key parameters of interest.

In this very demanding and resourceful field, researchers from academia and industry are welcome to submit original research work, reviews, articles, and surveys to this Special Issue, expanding upon the findings and novel work featured in the first volume.

The topics of Interest include (but are not limited to):

  • 5G regulatory and administrative issues;
  • 5G spectrum licensing, leasing, and allocation;
  • 5G over cm/mm-wave: can it still happen?;
  • Channel modeling and noise measurements over 3.5 GHz;
  • Wi-Fi as complementary 5G backhaul;
  • Ultra-wide-band (UWB) channel characterization for 5G;
  • RRH/antenna deployment and cell densification;
  • Fiber to the antenna: 5G access;
  • Metro/core backhaul network design;
  • Smart/mobile health and 5G;
  • Ultra-low latency for 5G solutions;
  • Smart cities and transportation: the 5G angle;
  • 5G and mobile-edge computing/fog;
  • Software-defined networking for 5G;
  • IPv6-based user classification;
  • User content and spectrum allocation;
  • Co-existence with 4G/4G+ infrastructure;
  • Hybrid terrestrial-satellite backhaul for 5G;
  • 5G and maritime communications;
  • PPDR services and 5G;
  • 5G and wireless theoretical information security.

Dr. Theofilos Chrysikos
Prof. Dr. Michael Paraskevas
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 250 words) can be sent to the Editorial Office for assessment.

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. Information is an international peer-reviewed open access monthly 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 1800 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

  • 5G
  • networks
  • wireless communication systems
  • mobile-edge computing
  • software-defined networking

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Related Special Issue

Published Papers (4 papers)

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Research

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27 pages, 1346 KB  
Article
Cache-Based Resource Allocation and Auxiliary Beamforming Optimization Method for Marine Non-Terrestrial Networks
by Kang Du and Ying Zhang
Information 2026, 17(3), 277; https://doi.org/10.3390/info17030277 - 10 Mar 2026
Viewed by 379
Abstract
In maritime non-terrestrial networks, long-distance links and resource heterogeneity give rise to significant system transmission delays. As an effective mechanism for alleviating link pressure and enhancing efficiency, caching has been widely employed in this scenario. However, existing studies have predominantly focused on the [...] Read more.
In maritime non-terrestrial networks, long-distance links and resource heterogeneity give rise to significant system transmission delays. As an effective mechanism for alleviating link pressure and enhancing efficiency, caching has been widely employed in this scenario. However, existing studies have predominantly focused on the separate optimization of caching or beamforming, often overlooking the joint potential of the physical and network layers as well as the impact of dynamic channel variations. This paper develops a system model for cache-assisted maritime non-terrestrial networks that incorporates hit status, two-hop link characteristics, and a dynamic channel switching mechanism to characterize link instability. Accordingly, an optimization framework for the joint design of caching and beamforming is presented with the aim of minimizing average delay. The proposed algorithm decomposes the mixed non-convex problem into two sub-problems through a hierarchical alternating strategy, and integrates semidefinite relaxation, successive convex approximation, and a greedy mechanism to attain an efficient solution. Numerical results verify the rapid convergence of the joint design of caching and beamforming algorithm and demonstrate that the semidefinite relaxation relaxation achieves a rank-one recovery probability of over 92.8%, ensuring near-optimal beamforming design. Simulation results demonstrate that the joint design robustly outperforms various state-of-the-art benchmarks in delay performance and effectively circumvents physical-layer bottlenecks as network scales expand or satellite antenna resources become constrained. More importantly, the proactive caching design maintains a significant “robustness gap” against isolated optimization schemes, thereby offering solid theoretical support and a practical pathway for cross-layer collaborative optimization in integrated air-ground-space communication systems. Full article
(This article belongs to the Special Issue 2nd Edition of 5G Networks and Wireless Communication Systems)
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24 pages, 1160 KB  
Article
Enhancing Data Security in Satellite Communication Systems: Integrating Quantum Cryptography with CatBoost Machine Learning
by Mohd Nadeem, Syed Anas Ansar, Sakshi Halwai, Arpita Singh and Rajeev Kumar
Information 2026, 17(3), 220; https://doi.org/10.3390/info17030220 - 25 Feb 2026
Viewed by 749
Abstract
In modern communication networks, particularly satellite-based systems, data security faces significant challenges from vulnerabilities such as signal interception, jamming, and latency during long distance transmissions. Traditional cryptographic methods are increasingly vulnerable to quantum computing threats, underscoring the need for advanced solutions to protect [...] Read more.
In modern communication networks, particularly satellite-based systems, data security faces significant challenges from vulnerabilities such as signal interception, jamming, and latency during long distance transmissions. Traditional cryptographic methods are increasingly vulnerable to quantum computing threats, underscoring the need for advanced solutions to protect data integrity, confidentiality, and availability. This research investigates the fusion of quantum cryptography and Machine Learning (ML) to improve security in satellite communication. The Quantum Key Distribution (QKD), which is grounded in quantum mechanics, enables unbreakable encryption by detecting eavesdropping via quantum state disturbances. The CatBoost ML algorithm is applied to a dataset of 10,000 records featuring categorical attributes for prioritizing security elements such as anomaly detection, encryption types, and access controls. The model yields an accuracy of 89.23% and Area under Curve the Receiver Operating Characteristic (AUC-ROC) score of 94.56%, effectively predicting threat levels. Feature importance reveals anomaly detection (28.5%) and quantum encryption (22.3%) as primary contributors. While hurdles such as high implementation costs and transmission range limitations persist, this quantum ML synergy provides a proactive, adaptive framework for resilient, future-ready communication networks. Full article
(This article belongs to the Special Issue 2nd Edition of 5G Networks and Wireless Communication Systems)
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Review

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34 pages, 2537 KB  
Review
Interference Mitigation in B5G Network Architecture for MIMO and CDMA: State of the Art, Issues, and Future Research Directions
by Haoxuan Yang, Faizan Qamar, Syed Hussain Ali Kazmi, Syed Talib Abbas Jafri, Khairul Akram Zainol Ariffin and Quang Ngoc Nguyen
Information 2024, 15(12), 771; https://doi.org/10.3390/info15120771 - 3 Dec 2024
Cited by 14 | Viewed by 6374
Abstract
The emergence of Beyond 5G (B5G) networks introduces novel challenges related to interference management, particularly within the context of Multiple-Input, Multiple-Output (MIMO) and Code Division Multiple Access (CDMA) technologies. In this comprehensive review paper, we delve into the intricacies of interference mitigation techniques [...] Read more.
The emergence of Beyond 5G (B5G) networks introduces novel challenges related to interference management, particularly within the context of Multiple-Input, Multiple-Output (MIMO) and Code Division Multiple Access (CDMA) technologies. In this comprehensive review paper, we delve into the intricacies of interference mitigation techniques within the B5G framework, with a specific focus on MIMO and CDMA systems. Firstly, we provide a brief overview of MIMO and CDMA principles, emphasizing their significance in B5G networks. MIMO leverages spatial diversity by employing multiple antennas in both the transmitter and the receiver, thereby enhancing capacity and reliability. CDMA, on the other hand, enables multiple users to share the same frequency band by assigning unique codes to each user. Next, we categorize the various types of interference encountered in MIMO and CDMA systems. These include co-channel interference, adjacent-channel interference, and multiuser interference. Understanding these interference sources is crucial for designing effective mitigation strategies. Our exploration of interference mitigation techniques covers state-of-the-art approaches tailored for MIMO and CDMA scenarios. Lastly, we discuss future research directions in interference mitigation for B5G networks. This review paper provides valuable insights for researchers, practitioners, and network designers seeking to enhance the robustness and efficiency of B5G communication systems by effectively mitigating interference in MIMO and CDMA contexts. Full article
(This article belongs to the Special Issue 2nd Edition of 5G Networks and Wireless Communication Systems)
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29 pages, 9411 KB  
Review
Multi-Antenna Array-Based Massive MIMO for B5G/6G: State of the Art, Challenges, and Future Research Directions
by Faizan Qamar, Syed Hussain Ali Kazmi, Khairul Akram Zainol Ariffin, Muhammad Tayyab and Quang Ngoc Nguyen
Information 2024, 15(8), 442; https://doi.org/10.3390/info15080442 - 29 Jul 2024
Cited by 17 | Viewed by 6998
Abstract
This comprehensive article explores the massive MIMO (M-MIMO) design and its associated concepts, focusing on the seamless integration requirements for Beyond 5G (B5G) and 6G networks. Addressing critical aspects such as RF chain reduction, pilot contamination, cell-free MIMO, and security considerations, this article [...] Read more.
This comprehensive article explores the massive MIMO (M-MIMO) design and its associated concepts, focusing on the seamless integration requirements for Beyond 5G (B5G) and 6G networks. Addressing critical aspects such as RF chain reduction, pilot contamination, cell-free MIMO, and security considerations, this article delves into the intricacies of M-MIMO in the evolving landscape of B5G. Moreover, the emerging MIMO concepts in this article include AI-enabled M-MIMO three-dimensional beamforming, reconfigurable intelligent surfaces, visible light communication, and THz spectrum utilization. This review highlights the challenges and open research issues, including Narrow Aperture Antenna Nodes, Plasmonic Antenna Arrays, Integrated Sensing with M-MIMO, and the application of federated learning in M-MIMO systems. By examining these cutting-edge developments, this article aims to advance knowledge in the field and inspire future research directions in the exciting realm of B5G and 6G networks. Full article
(This article belongs to the Special Issue 2nd Edition of 5G Networks and Wireless Communication Systems)
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