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Electronics
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Emerging Intelligent and Green Communications: Systems, Devices and Applications
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Emerging Intelligent and Green Communications: Systems, Devices and Applications

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microwave and Wireless Communications".

Deadline for manuscript submissions: closed (15 May 2023) | Viewed by 5620

Special Issue Editors

Dr. Anna Piacibello

E-Mail Website1 Website2
Guest Editor
Department of Electronics and Telecommunications, Politecnico di Torino, 10129 Turin, Italy
Interests: microwave electronics; power amplifiers
Prof. Dr. Vittorio Camarchia

E-Mail Website1 Website2
Guest Editor
Department of Electronics and Telecommunications, Politecnico di Torino, 10129 Torino, Italy
Interests: power amplifiers; monolithic microwave integrated circuits
Special Issues, Collections and Topics in MDPI journals
Dr. Kimon Vivien

E-Mail Website
Guest Editor
United Monolithic Semiconductors, 91140 Paris, France
Interests: RF/mm-wave circuits design
Dr. Paolo de Falco

E-Mail Website
Guest Editor
Qualcomm, San Diego, CA 92121, USA
Interests: RF; startup; RF design; wireless and 5G technology

Special Issue Information

Dear Colleagues,

Current wireless communication networks constitute between six and a half and seven million base stations worldwide, with 4G and 5G covering more than 50% of the output and predicted to completely replace the older technologies in a few years. There are currently around eight billion mobile subscriptions, increasing by two billion every 10 years. Future networks will thus be fundamental for society and industries and be required to fulfill the communication needs of humans as well as intelligent machines. This has faced the industry and research communities with a significant challenge in constructing this infrastructure, which should contribute to an efficient, human-friendly, sustainable society through intelligent communication.

To serve as the platform for a wide range of new and evolving services, the capabilities of future networks need to be enhanced and extended in various dimensions. This includes improving achievable data rates and system capacities, minimizing latency. Furthermore, the exponentially growing traffic demand should be met with a limited increase in the overall costs. For digital innovations to remain inclusive, the total cost must be sustainable.

This Special Issue will explore recent advances and challenges in modern communications, from the system level to the device level, with an emphasis on energy efficiency enhancement and reconfigurability. We are inviting papers from both the industry and academia that provide relevant insights from various points of view.

Dr. Anna Piacibello
Dr. Vittorio Camarchia
Dr. Kimon Vivien
Dr. Paolo de Falco
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. Electronics 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 2400 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

  • transceiver
  • efficiency
  • power amplifier
  • 5G

Published Papers (3 papers)

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Research

18 pages, 8039 KiB  
Article
A Thorough Evaluation of GaN HEMT Degradation under Realistic Power Amplifier Operation
by Gianni Bosi, Antonio Raffo, Valeria Vadalà, Rocco Giofrè, Giovanni Crupi and Giorgio Vannini
Electronics 2023, 12(13), 2939; https://doi.org/10.3390/electronics12132939 - 04 Jul 2023
Cited by 1 | Viewed by 1146
Abstract
In this paper, we experimentally investigate the effects of degradation observed on 0.15-µm GaN HEMT devices when operating under realistic power amplifier conditions. The latter will be applied to the devices under test (DUT) by exploiting a low-frequency load-pull characterization technique that provides [...] Read more.
In this paper, we experimentally investigate the effects of degradation observed on 0.15-µm GaN HEMT devices when operating under realistic power amplifier conditions. The latter will be applied to the devices under test (DUT) by exploiting a low-frequency load-pull characterization technique that provides information consistent with RF operation, with the advantage of revealing electrical quantities not directly detectable at high frequency. Quantities such as the resistive gate current, play a fundamental role in the analysis of technology reliability. The experiments will be carried out on DUTs of the same periphery considering two different power amplifier operations: a saturated class-AB condition, that emphasizes the degradation effects produced by high temperatures due to power dissipation, and a class-E condition, that enhances the effects of high electric fields. The experiments will be carried out at 30 °C and 100 °C, and the results will be compared to evaluate how a specific RF condition can impact on the device degradation. Such a kind of comparison, to the authors’ knowledge, has never been carried out and represents the main novelty of the present study. Full article
(This article belongs to the Special Issue Emerging Intelligent and Green Communications: Systems, Devices and Applications)
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22 pages, 1695 KiB  
Article
Energy Efficiency and Throughput Optimization in 5G Heterogeneous Networks
by Rabia Arshad, Muhammad Farooq-i-Azam, Raheel Muzzammel, Arfan Ghani and Chan Hwang See
Electronics 2023, 12(9), 2031; https://doi.org/10.3390/electronics12092031 - 27 Apr 2023
Cited by 2 | Viewed by 1754
Abstract
Device-to-device communication offers a promising technology for the 5G network that aims to enhance the data rate, reduce latency and cost, improve energy efficiency, and provide other desired features. The 5G heterogeneous network (5GHN) with a decoupled association strategy of downlink (DL) and [...] Read more.
Device-to-device communication offers a promising technology for the 5G network that aims to enhance the data rate, reduce latency and cost, improve energy efficiency, and provide other desired features. The 5G heterogeneous network (5GHN) with a decoupled association strategy of downlink (DL) and uplink (UL) is a promising solution for the challenges faced in the 4G heterogeneous network (4GHN). The research presented in this paper evaluates the performance of the 4GHN as well as a DL-and-UL-coupled (DU-CP) access scheme in comparison with the 5GHN with a DL-and-UL-decoupled (DU-DCP) access scheme in terms of the energy efficiency and network throughput in four-tier heterogeneous networks. The energy and throughput are optimized for both scenarios, i.e., DU-CP and DU-DCP, and the results are compared. Detailed performance analyses of the DU-CP and DU-DCP access schemes were conducted with the help of comparisons of the results achieved by implementing a genetic algorithm (GA) and particle swarm optimization (PSO). Both of these algorithms are suited for the non-linear problem under investigation in which the search space is large. The simulation results have shown that the DU-DCP access scheme gives a better performance than the DU-CP scheme in a four-tier heterogeneous network in terms of network throughput and energy efficiency. The PSO achieves an energy efficiency of 12 Mbits/joule for the DU-CP and 42 Mbits/joule for the DU-DCP, whereas the GA yields an energy efficiency of 28 Mbits/joule for the DU-CP and 55 Mbits/joule for the DU-DCP. The performance of the proposed method is compared with those of three other schemes. The results show that the DU-DCP scheme using the GA outperforms the compared methods. Full article
(This article belongs to the Special Issue Emerging Intelligent and Green Communications: Systems, Devices and Applications)
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15 pages, 556 KiB  
Article
A New Varactor-Tuned 5.8 GHz Dielectric Resonator Band-Stop Filter for ITS and C-V2X Coexistence with Vehicular DSRC
by Giovanni Collodi, Monica Righini and Alessandro Cidronali
Electronics 2023, 12(2), 453; https://doi.org/10.3390/electronics12020453 - 15 Jan 2023
Cited by 1 | Viewed by 1423
Abstract
In this paper, we introduce an electronically tuneable band-stop filter based on a dielectric resonator, along with its design principles and equivalent circuit model aimed at the coexistence of intelligent transport systems (ITS) and cellular vehicle-to-everything (C-V2X) communications operating at 5.9 GHz, with [...] Read more.
In this paper, we introduce an electronically tuneable band-stop filter based on a dielectric resonator, along with its design principles and equivalent circuit model aimed at the coexistence of intelligent transport systems (ITS) and cellular vehicle-to-everything (C-V2X) communications operating at 5.9 GHz, with the widely spread vehicular dedicated short range communications (DSRC) at 5.8 GHz. The proposed architecture involves a dielectric resonator coupled via a microstrip transmission line to a planar ring resonator. The resonance is electronically tuned by varying the bias voltage of a varactor diode placed in the ring. This design is analyzed theoretically and experimentally. For validation, a filter operating at 5.8 GHz was designed. The prototype is capable of enhancing coexistence exhibiting to features. First, when inserted into the ITS transmitter chain, it reduces unwanted transmitter emissions in the out-of-band spectrum occupied by the DSRC carriers in the 5.8 GHz frequency band of at least 25 dB, with a minimal insertion loss at 5. 9 GHz of 1.6 dB; secondly, when inserted in the ITS receiver chain, it exhibits high linearity that prevents the generation of intermodulation products falling into the filter pass band. The prototype features more than 21 dBm of third-order input intercept points, and a tuning range of 26 MHz while maintaining a minimal loaded Q factor of 93. The prototype is discussed regarding the detailed equivalent circuit parameter extraction and their dependency upon the control voltage. Full article
(This article belongs to the Special Issue Emerging Intelligent and Green Communications: Systems, Devices and Applications)
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