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Electronics
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Feature Papers in 'Microwave and Wireless Communications' Section, 2nd Edition
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Feature Papers in 'Microwave and Wireless Communications' Section, 2nd Edition

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

Deadline for manuscript submissions: 30 April 2026 | Viewed by 1603

Special Issue Editors

Prof. Dr. Pingyi Fan

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Guest Editor
Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Interests: wireless communications and networking; machine learning and large model training; artificial intelligence and distributed systems; big data signal and information processing; semantic communications and network optimization
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yang-Ki Hong

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
Interests: computational materials science; electromagnetics; magnetism; nanocrystalline soft magnets; rare-earth-free permanent magnets; permanent magnet synchronous motors; 5G/6G antennas; Cubesat and UAV antennas
Special Issues, Collections and Topics in MDPI journals
Dr. Adão Silva

E-Mail Website
Guest Editor
Departamento de Eletrónica, Telecomunicações e Informática (DETI), University of Aveiro, 3810-193 Aveiro, Portugal
Interests: cooperative communications; massive MIMO; millimeter wave communications; interference management; precoding and equalizer design
Special Issues, Collections and Topics in MDPI journals
Dr. Felipe Jiménez

grade E-Mail Website
Guest Editor
Instituto Universitario de Investigación del Automóvil (INSIA), Universidad Politécnica de Madrid, 28040 Madrid, Spain
Interests: autonomous vehicles; cooperative services; assistance systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We announce that the Section 'Microwave and Wireless Communications' is now compiling a collection of papers submitted by our Section’s Editorial Board Members and leading scholars in this field of research. We welcome contributions as well as recommendations from Editorial Board Members.

This Special Issue will publish high-quality papers, namely insightful and influential original articles or reviews in the field. We expect these papers to be widely read and highly influential. All papers published in this Special Issue will be collected into a printed edition book after the deadline and will be well promoted.

Topics of interest include, but are not limited to, the following:

  • Microwave engineering;
  • Wireless communication systems;
  • Electromagnetic interference (EMI);
  • Electromagnetic compatibility;
  • Antennas and propagation;
  • RF circuits and systems;
  • Radar systems design;
  • Signal processing for wireless and microwave systems;
  • Channel coding and error control;
  • Multiple access techniques;
  • Mobile and cellular networks;
  • Satellite communication systems;
  • Terahertz communications;
  • 5G/6G;
  • Machine learning and its applications in wireless communications;
  • Integration of sensing, computing and communications;
  • Communication applications.

Prof. Dr. Pingyi Fan
Prof. Dr. Yang-Ki Hong
Dr. Adão Silva
Dr. Felipe Jiménez
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. 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

  • wireless communication technology
  • electromagnetic sensing and diagnostics
  • microwave theory and technology including antennas
  • radar technology

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Related Special Issue

Published Papers (4 papers)

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Research

24 pages, 8351 KB  
Article
Resolving Knowledge Gaps in Liquid Crystal Delay Line Phase Shifters for 5G/6G mmW Front-Ends
by Jinfeng Li and Haorong Li
Electronics 2026, 15(2), 485; https://doi.org/10.3390/electronics15020485 - 22 Jan 2026
Viewed by 33
Abstract
In the context of fifth-generation (5G) communications and the dawn of sixth-generation (6G) networks, a surged societal demand on bandwidth and data rate and more stringent commercial requirements on transmission efficiency, cost, and reliability are increasingly evident and, hence, driving the maturity of [...] Read more.
In the context of fifth-generation (5G) communications and the dawn of sixth-generation (6G) networks, a surged societal demand on bandwidth and data rate and more stringent commercial requirements on transmission efficiency, cost, and reliability are increasingly evident and, hence, driving the maturity of reconfigurable millimeter-wave (mmW) and terahertz (THz) devices and systems, in particular, liquid crystal (LC)-based tunable solutions for delay line phase shifters (DLPSs). However, the field of LC-combined electronics has witnessed only incremental developments in the past decade. First, the tuning principle has largely been unchanged (leveraging the shape anisotropy of LC molecules in microscale and continuum mechanics in macroscale for variable polarizability). Second, LC-enabled devices’ performance has yet to be standardized (suboptimal case by case at different frequency domains). In this context, this work points out three underestimated knowledge gaps as drawn from our theoretical designs, computational simulations, and experimental prototypes, respectively. The first gap reports previously overlooked physical constraints from the analytical model of an LC-embedded coaxial DLPS. A new geometry-dielectric bound is identified. The second gap deals with the lack of consideration in the suboptimal dispersion behavior in differential delay time (DDT) and differential delay length (DDL) for LC phase-shifting devices. A new figure of merit (FoM) is proposed and defined at the V-band (60 GHz) to comprehensively evaluate the ratios of the DDT and DDL over their standard deviations across the 54 to 66 GHz spectrum. The third identified gap deals with the in-depth explanation of our recent experimental results and outlook for partial leakage attack analysis of LC phase shifters in modern eavesdropping. Full article
(This article belongs to the Special Issue Feature Papers in 'Microwave and Wireless Communications' Section, 2nd Edition)
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20 pages, 3356 KB  
Article
An Improved Localization Method Using Light Detection and Ranging for Indoor Positionings
by Yung-Fa Huang, Ching-Mu Chen, Jun-Yuan Liao and Tung-Jung Chan
Electronics 2025, 14(24), 4904; https://doi.org/10.3390/electronics14244904 - 13 Dec 2025
Viewed by 281
Abstract
This study proposes a low-cost indoor positioning system based on a single Light Detection and Ranging (LiDAR) sensor and several fixed reflective reference points. Distances are obtained by trigonometric measurement, and positions are computed by trilateration. In static tests the average error was [...] Read more.
This study proposes a low-cost indoor positioning system based on a single Light Detection and Ranging (LiDAR) sensor and several fixed reflective reference points. Distances are obtained by trigonometric measurement, and positions are computed by trilateration. In static tests the average error was 7.4 mm. When the target moves at walking speed, small survey errors of the reference points cause the average error to increase to 21.8 mm. Finally, the proposed Reference Point Update Method (RPUM) that continuously corrects reference point coordinates using a moving average of recent residuals reduces the dynamic error from 208.71 mm to 20.34 mm, which is about 90% improvement. The method used in this paper requires no additional hardware and runs in real time. Full article
(This article belongs to the Special Issue Feature Papers in 'Microwave and Wireless Communications' Section, 2nd Edition)
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20 pages, 1843 KB  
Article
A Pipelined FPGA-Based Frame Synchronizer for Gaussian Noise Channels
by Joe Cavazos and Yuhua Chen
Electronics 2025, 14(23), 4724; https://doi.org/10.3390/electronics14234724 - 30 Nov 2025
Viewed by 282
Abstract
This paper presents a Field Programmable Gate Array (FPGA)-implementable Frame Synchronizer that overcomes deficiencies of existing synchronizers in the space communications industry and provides a pipelined approach to achieve improved performance in latency, performance in the presence of noise, and streamlined implementation complexity. [...] Read more.
This paper presents a Field Programmable Gate Array (FPGA)-implementable Frame Synchronizer that overcomes deficiencies of existing synchronizers in the space communications industry and provides a pipelined approach to achieve improved performance in latency, performance in the presence of noise, and streamlined implementation complexity. Unlike a soft decision synchronizer, magnitude (soft) bits are not required from the demodulation stage, and only the sign bit is used, reducing the complexity and signal counts between the transceiver and the synchronizer. Improved performance in noise can be achieved by introducing a small observation window surrounding the candidate Attached Sync Marker (ASM) window to uncorrelated data around the ASM. Further improvement in the presence of noise is achieved by using two ASMs, effectively doubling the ASM length of observation, but with no increase in the ASM pattern length and using existing predefined ASM patterns, thus remaining compliant with the Consultative Committee for Space Data Systems (CCSDS) standards. A parallel and pipelined implementation without a state machine eliminates latency from search, verify, lock, and flywheel states and reduces the effects of cycle slips of traditional flywheel state machine synchronizers. Full article
(This article belongs to the Special Issue Feature Papers in 'Microwave and Wireless Communications' Section, 2nd Edition)
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29 pages, 2868 KB  
Article
224-CPSK–CSS–WCDMA FPGA-Based Reconfigurable Chaotic Modulation for Multiuser Communications in the 2.45 GHz Band
by Jose-Cruz Nuñez-Perez, Miguel-Angel Estudillo-Valdez, José-Ricardo Cárdenas-Valdez, Gabriela-Elizabeth Martinez-Mendivil and Yuma Sandoval-Ibarra
Electronics 2025, 14(20), 3995; https://doi.org/10.3390/electronics14203995 - 12 Oct 2025
Viewed by 550
Abstract
This article presents an innovative chaotic communication scheme that integrates the multiuser access technique known as Wideband Code Division Multiple Access (W-CDMA) with the chaos-based selective strategy Chaos-Based Selective Symbol (CSS) and the unconventional modulation Chaos Parameter Shift Keying (CPSK). The system is [...] Read more.
This article presents an innovative chaotic communication scheme that integrates the multiuser access technique known as Wideband Code Division Multiple Access (W-CDMA) with the chaos-based selective strategy Chaos-Based Selective Symbol (CSS) and the unconventional modulation Chaos Parameter Shift Keying (CPSK). The system is designed to operate in the 2.45 GHz band and provides a robust and efficient alternative to conventional schemes such as Quadrature Amplitude Modulation (QAM). The proposed CPSK modulation enables the encoding of information for multiple users by regulating the 36 parameters of a Reconfigurable Chaotic Oscillator (RCO), theoretically allowing the simultaneous transmission of up to 224 independent users over the same channel. The CSS technique encodes each user’s information using a unique chaotic segment configuration generated by the RCO; this serves as a reference for binary symbol encoding. W-CDMA further supports the concurrent transmission of data from multiple users through orthogonal sequences, minimizing inter-user interference. The system was digitally implemented on the Artix-7 AC701 FPGA (XC7A200TFBG676-2) to evaluate logic-resource requirements, while RF validation was carried out using a ZedBoard FPGA equipped with an AD9361 transceiver. Experimental results demonstrate optimal performance in the 2.45 GHz band, confirming the effectiveness of the chaos-based W-CDMA approach as a multiuser access technique for high-spectral-density environments and its potential for use in 5G applications. Full article
(This article belongs to the Special Issue Feature Papers in 'Microwave and Wireless Communications' Section, 2nd Edition)
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