Special Issue "Advances in Wireless Communications Systems"

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

Deadline for manuscript submissions: 31 July 2023 | Viewed by 4862

Special Issue Editors

Dr. Stefano Caputo
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Guest Editor
Department of Information Engineering, University of Florence, 50121 Firenze FI, Italy
Interests: Physical Layer Security; UWB positioning systems; Visible Light Communications; Molecular Communications; Body Area Networks; 6G; 5G; Networks for Healthcare Applications
Dr. Lorenzo Biotti
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Guest Editor
Department of Information Engineering, University of Florence, 50121 Firenze FI, Italy
Interests: Physical Layer Security; UWB positioning systems; Molecular Communications; Body Area Networks; Networks for Healthcare Applications
Dr. Lorenzo Mucchi
E-Mail Website
Guest Editor
Department of Information Engineering, University of Firenze, Via S. Marta 3, 50139 Firenze, Italy
Interests: physical layer security; UWB positioning systems; visible light communications; molecular communications; body area networks; 6G; 5G; networks for healthcare applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent period, fifth generation (5G) of mobile communications helped to bridge the growth of data and device connections demand. This Special Issue of Advances in Wireless Communications Systems aims to investigate new challenges and opportunities, which will be enabled by sixth generation (6G) of mobile communications.

The next network protocols should take account of resources allocation and optimization, also provided by new artificial intelligence algorithms or Fog computing and networking systems. Moreover, massive data transmission should require a high level of cybersecurity, including physical layer security. Last but not least, to satisfy next network performance demand, new spectral bands in radio and optical frequencies are required.

Papers should highlight either theoretical issues or practical applications, such as smart city with ultra-low latency communications, healthcare with massive density of wireless body area networks (WBANs), Internet of Things with ultra-low power communications, infotainment with high throughput for ultra-high multimedia definition, etc.

The contribution topics of primary interest include, but are not limited to:

  • Network protocols
  • Resources allocation techniques
  • Artificial Intelligence applied in communications systems
  • Radio Frequencies (RF) enabling 6G
  • Optical wireless communications
  • Vehicular communications
  • Wireless body area networks (WBANs)
  • Ultra-low power communications
  • Network performance
  • Fog computing and networking
  • 6G communications
  • Physical layer security
  • Cybersecurity systems

Dr. Stefano Caputo
Dr. Lorenzo Biotti
Dr. Lorenzo Mucchi
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. 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 1400 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

  • Network protocol and resources allocation
  • artificial intelligence
  • Security
  • RF enabling 6G
  • optical wireless communications
  • smart city applications
  • healthcare applications
  • Internet of Things

Published Papers (4 papers)

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Research

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Article
Distributed Edge Computing for Resource Allocation in Smart Cities Based on the IoT
Information 2022, 13(7), 328; https://doi.org/10.3390/info13070328 - 07 Jul 2022
Cited by 1 | Viewed by 826
Abstract
Smart cities using the Internet of Things (IoT) can operate various IoT systems with better services that provide intelligent and efficient solutions for various aspects of urban life. With the rapidly growing number of IoT systems, the many smart city services, and their [...] Read more.
Smart cities using the Internet of Things (IoT) can operate various IoT systems with better services that provide intelligent and efficient solutions for various aspects of urban life. With the rapidly growing number of IoT systems, the many smart city services, and their various quality of service (QoS) constraints, servers face the challenge of allocating limited resources across all Internet-based applications to achieve an efficient per-formance. The presence of a cloud in the IoT system of a smart city results in high energy con-sumption and delays in the network. Edge computing is based on a cloud computing framework where computation, storage, and network resources are moved close to the data source. The IoT framework is identical to cloud computing. The critical issue in edge computing when executing tasks generated by IoT systems is the efficient use of energy while maintaining delay limitations. In this paper, we study a multicriteria optimization approach for resource allocation with distributed edge computing in IoT-based smart cities. We present a three-layer network architecture for IoT-based smart cities. An edge resource allocation scheme based on an auctionable approach is proposed to ensure efficient resource computation for delay-sensitive tasks. Full article
(This article belongs to the Special Issue Advances in Wireless Communications Systems)
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Article
Design and Analysis of Joint Source-Channel Code System with Fixed-Length Code
Information 2022, 13(6), 281; https://doi.org/10.3390/info13060281 - 31 May 2022
Cited by 1 | Viewed by 891
Abstract
As the demands of multimedia and data services increase, efficient communication systems are being investigated to meet the high data rate requirements. Joint source-channel coding (JSCC) schemes were proposed for improving overall system performance. However, existing JSCC systems may suffer a symbol error [...] Read more.
As the demands of multimedia and data services increase, efficient communication systems are being investigated to meet the high data rate requirements. Joint source-channel coding (JSCC) schemes were proposed for improving overall system performance. However, existing JSCC systems may suffer a symbol error rate (SER) performance loss when residual source redundancy is not fully exploited. This paper presents a novel, low-complexity JSCC system, which consists of a fixed-length source block code and an irregular convolutional channel code. A simple approach is proposed to design source codes that minimize the SER of source detection and guarantee the convergence of iterative source-channel decoding (ISCD). To improve the waterfall performance of ISCD, the channel code is optimized by using the extrinsic information transfer (EXIT) chart and the concept of irregular code. The channel code is constituted by recursive non-systematic convolutional (RNSC) subcodes. The weights of subcodes are optimized to make the EXIT curves of the channel decoder and the source decoder well-matched, and therefore, a near-capacity performance is achieved. Simulation results show that the proposed system achieves more than 1 dB gains and 0.3 dB gains compared to the separate source-channel code system and the other optimal JSCC systems, respectively. Additionally, the performance of the proposed system is within 1 dB deviation from the Shannon limit capacity. Full article
(This article belongs to the Special Issue Advances in Wireless Communications Systems)
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Article
Atmospheric Propagation Modelling for Terrestrial Radio Frequency Communication Links in a Tropical Wet and Dry Savanna Climate
Information 2022, 13(3), 141; https://doi.org/10.3390/info13030141 - 07 Mar 2022
Cited by 9 | Viewed by 1665
Abstract
Atmospheric impairment-induced attenuation is the prominent source of signal degradation in radio wave communication channels. The computation-based modeling of radio wave attenuation over the atmosphere is the stepwise application of relevant radio propagation models, data, and procedures to effectively and prognostically estimate the [...] Read more.
Atmospheric impairment-induced attenuation is the prominent source of signal degradation in radio wave communication channels. The computation-based modeling of radio wave attenuation over the atmosphere is the stepwise application of relevant radio propagation models, data, and procedures to effectively and prognostically estimate the losses of the propagated radio signals that have been induced by atmospheric constituents. This contribution aims to perform a detailed prognostic evaluation of radio wave propagation attenuation due to rain, free space, gases, and cloud over the atmosphere at the ultra-high frequency band. This aim has been achieved by employing relevant empirical atmospheric data and suitable propagation models for robust prognostic modeling using experimental measurements. Additionally, the extrapolative attenuation estimation results and the performance analysis were accomplished by engaging different stepwise propagation models and computation parameters often utilized in Earth–satellite and terrestrial communications. Results indicate that steady attenuation loss levels rise with increasing signal carrier frequency where free space is more dominant. The attenuation levels attained due to rain, cloud, atmospheric gases, and free space are also dependent on droplet depths, sizes, composition, and statistical distribution. While moderate and heavy rain depths achieved 3 dB and 4 dB attenuations, the attenuation due to light rainfall attained a 2.5 dB level. The results also revealed that attenuation intensity levels induced by atmospheric gases and cloud effects are less than that of rain. The prognostic-based empirical attenuation modeling results can provide first-hand information to radio transmission engineers on link budgets concerning various atmospheric impairment effects during radio frequency network design, deployment, and management, essentially at the ultra-high frequency band. Full article
(This article belongs to the Special Issue Advances in Wireless Communications Systems)
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Review

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Review
Ultra-Reliable Low-Latency Communications: Unmanned Aerial Vehicles Assisted Systems
Information 2022, 13(9), 430; https://doi.org/10.3390/info13090430 - 12 Sep 2022
Viewed by 987
Abstract
Ultra-reliable low-latency communication (uRLLC) is a group of fifth-generation and sixth-generation (5G/6G) cellular applications with special requirements regarding latency, reliability, and availability. Most of the announced 5G/6G applications are uRLLC that require an end-to-end latency of milliseconds and ultra-high reliability of communicated data. [...] Read more.
Ultra-reliable low-latency communication (uRLLC) is a group of fifth-generation and sixth-generation (5G/6G) cellular applications with special requirements regarding latency, reliability, and availability. Most of the announced 5G/6G applications are uRLLC that require an end-to-end latency of milliseconds and ultra-high reliability of communicated data. Such systems face many challenges since traditional networks cannot meet such requirements. Thus, novel network structures and technologies have been introduced to enable such systems. Since uRLLC is a promising paradigm that covers many applications, this work considers reviewing the current state of the art of the uRLLC. This includes the main applications, specifications, and main requirements of ultra-reliable low-latency (uRLL) applications. The design challenges of uRLLC systems are discussed, and promising solutions are introduced. The virtual and augmented realities (VR/AR) are considered the main use case of uRLLC, and the current proposals for VR and AR are discussed. Moreover, unmanned aerial vehicles (UAVs) are introduced as enablers of uRLLC. The current research directions and the existing proposals are discussed. Full article
(This article belongs to the Special Issue Advances in Wireless Communications Systems)
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