Advances and Outlook in Electrical, Electronics and Communications Engineering

1. Introduction

Electrical, electronics, and communications engineering continue to play a central role in modern technological development, underpinning the digital infrastructure that enables computation, connectivity, sensing, and control across virtually all sectors. Over the last decade, progress in semiconductor integration, programmable and heterogeneous computing, and advanced signal processing has accelerated the pace at which complex systems can be designed and deployed [1]. In particular, programmable hardware platforms (including FPGA-based and other reconfigurable architectures) remain essential where low latency, deterministic behavior, and energy-efficient processing are required, while modern design flows increasingly combine high-level abstractions with implementation-aware optimization [2].

In parallel, communications engineering is being reshaped by growing demands for high-throughput and low-latency services, as well as by the need to provide reliable connectivity for a large number of devices. The evolution toward next-generation mobile networks and converged access/backhaul architectures has highlighted the importance of end-to-end performance modeling, traffic engineering, and resilient operation under dynamic conditions [3]. A further major trend is the adoption of data-driven techniques and machine learning to support network management, resource allocation, and signal processing tasks, offering improved adaptivity but also creating new requirements related to robustness, interpretability, and validation [4]. These developments are closely linked to a broad shift toward edge and fog computing paradigms, where computation is distributed closer to data sources to reduce latency and bandwidth usage, often under strict energy constraints [5].

At the system level, increasing complexity presents persistent challenges in design, implementation efficiency, reliability, and integration. Modern electronic systems frequently blend hardware and software components, incorporate distributed sensing/actuation, and operate under safety, security, and maintainability constraints that must be addressed throughout the life cycle [6]. Reliability and fault tolerance remain crucial in safety- and mission-critical deployments, motivating continued research into redundancy strategies, runtime monitoring, and practical fault models [7]. In addition, the expanding attack surface of interconnected systems has made security-by-design and trusted operation—including authentication, integrity, and supply-chain assurance—an increasingly important engineering objective [8]. Across all these topics, energy efficiency has become a primary optimization target, driven by sustainability considerations and by the practical limitations of mobile, wearable, and distributed embedded devices [9].

Against this background, the Special Issue entitled “Feature Paper Collection in the Section ‘Electrical, Electronics and Communications Engineering’” brings together fourteen peer-reviewed articles that reflect current advances across programmable hardware, communication networks, signal processing, embedded systems, antennas and microwave structures, and emerging interdisciplinary applications. Collectively, the contributions highlight how progress in the field increasingly depends on cross-layer thinking—linking algorithms, architectures, and implementation decisions with realistic deployment constraints and measurable performance outcomes [10].

2. Overview of Contributions

Several contributions focus on programmable hardware and digital system implementation. Salauyou et al. demonstrated an efficient FPGA implementation technique using ASMD-FSMD methods, achieving significant performance improvements in digital devices (contribution 1). Similarly, Kubica and Czerwinski analyzed triple modular redundancy mitigation techniques in FPGA systems, addressing reliability challenges in critical applications (contribution 2).

Communication systems and signal processing are another major research area represented in this Special Issue. Klinkowski and Więcek analyzed latency prediction models in packet-switched Xhaul networks, demonstrating improved performance using data-driven approaches (contribution 3). Datta et al. proposed a neural beamforming method for multi-channel speech enhancement, improving speech quality in complex acoustic environments (contribution 4). Lee et al. presented a secure authentication scheme for fog-based vehicular networks, improving both performance and security (contribution 5). Lee et al. also introduced a denoising autoencoder-based localization method, improving connectivity-based localization accuracy (contribution 6).

Research on antennas and microwave systems is represented by several important contributions. Madji et al. presented a novel antenna design capable of generating circularly polarized beams with improved performance characteristics (contribution 7). Negri et al. provided a comprehensive review of two-dimensional leaky-wave antennas and their design techniques (contribution 8). Çolak and Ertay proposed an efficient design method for glide-symmetric waveguide structures, improving microwave system design efficiency (contribution 9). Karkanis et al. presented a comparative study of microwave ablation applicators, providing insights into electromagnetic and thermal performance optimization (contribution 10).

Embedded systems and electronic measurement techniques were addressed in several contributions. Suchorolski et al. analyzed analogue and digital methods for magnetic flux estimation in voltage transformers, demonstrating effective implementation approaches (contribution 11). Januszkiewicz and Nowak introduced textile-based microwave transmission lines for wearable electronic systems, providing new possibilities for wearable communication technologies (contribution 12).

In addition, system-level and interdisciplinary contributions highlight emerging applications and design methodologies. Lew et al. proposed a distributed software build assurance framework using blockchain to improve software supply chain integrity (contribution 13). Łukaniszyn et al. reviewed the use of artificial intelligence and digital twins in personalized healthcare, demonstrating the growing importance of intelligent systems integration (contribution 14).

Taken together, these contributions reflect current trends in electrical, electronics, and communications engineering and demonstrate the continued development of advanced electronic and communication systems.

3. Research Challenges and Future Directions

Despite significant advances, several important research challenges remain. Improving hardware efficiency, reliability, and scalability continues to be essential, particularly in programmable logic systems and embedded platforms (contributions 1 and 2).

Communication systems must support increasing performance requirements while maintaining reliability and efficiency. Advances in communication protocols, signal processing, and network optimization will remain critical research areas (contributions 3–6).

Antenna and microwave system design continues to evolve, supporting new applications in wireless communication, sensing, and medical technologies (contributions 7–10).

Embedded systems, wearable electronics, and intelligent integrated systems represent another important research direction, requiring efficient hardware–software integration and innovative system architectures (contributions 11–14).

4. Conclusions

This Special Issue presents a diverse collection of research contributions addressing key challenges and emerging trends in electrical, electronics, and communications engineering. The published papers demonstrate advances in programmable hardware, communication systems, signal processing, antenna design, embedded systems, and intelligent applications.

We would like to thank all of the authors for their valuable contributions, the reviewers for their careful evaluations, and the editorial staff of Applied Sciences for their support throughout the publication process.

We hope that this Special Issue will contribute to further advances in electrical, electronics, and communications engineering and inspire future research in these important areas.