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Applications of Wireless and Mobile Communications
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Applications of Wireless and Mobile Communications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Electrical, Electronics and Communications Engineering".

Deadline for manuscript submissions: 20 July 2025 | Viewed by 3370

Special Issue Editor

Dr. Mario Marques Da Silva

E-Mail Website
Guest Editor
1. Institute of Telecommunications, 1049-001 Lisboa, Portugal
2. Department of Sciences and Technologies, Autonoma University of Lisbon, 1150-293 Lisboa, Portugal
Interests: cellular communications; 5G and beyond; massive-MIMO; millimeter-wave communications; block transmission techniques; NOMA
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wireless and mobile communications are pivotal in today’s interconnected world, enabling seamless connectivity and data exchange. This Special Issue of the MDPI journal Applied Sciences delves into the transformative impact of these technologies, exploring innovative applications and addressing emerging challenges. The rapid evolution of wireless communication has paved the way for advanced scenarios, integrating machine learning, IoT, and cyber security to meet growing bandwidth demands and sustainability goals. Key topics include AI-driven communication strategies, robust wireless sensor networks, and novel applications that enhance real-time, mission-critical operations. This Special Issue invites cutting-edge research that contributes to this field’s growth, ensuring efficient, secure, and eco-friendly communication solutions.

Dr. Mario Marques Da Silva
Guest Editor

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. Applied Sciences 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

  • sustainable wireless technology
  • latency mitigation
  • interference mitigation
  • diversity
  • Internet of Things
  • privacy
  • AI in communications

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Published Papers (3 papers)

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Research

22 pages, 2984 KiB  
Article
Improved Low-Complexity, Pilot-Based Channel Estimation for Large Intelligent Surface Systems
by Ali Gashtasbi, Mário Marques da Silva and Rui Dinis
Appl. Sci. 2025, 15(7), 3743; https://doi.org/10.3390/app15073743 - 28 Mar 2025
Viewed by 562
Abstract
In Large Intelligent Surface (LIS) systems, achieving accurate channel estimation is essential for enhancing communication quality and system efficiency. The main focus of this study is on using the Least Squares (LS) method to estimate pilot-based channels. It also looks at more advanced [...] Read more.
In Large Intelligent Surface (LIS) systems, achieving accurate channel estimation is essential for enhancing communication quality and system efficiency. The main focus of this study is on using the Least Squares (LS) method to estimate pilot-based channels. It also looks at more advanced methods, like using low-density parity-check (LDPC) codes, antenna selection, and optimized pilot design, to make the method more accurate and effective. We employ orthogonal pilot sequences to reduce signal interference and improve pilot power to enhance estimation performance. Additionally, LDPC codes play a crucial role in eliminating noise and interference effects, thereby improving system reliability. We also propose selective configurations of LIS antennas to balance high performance with reduced computational costs. Collectively, these strategies lead to a significant reduction in the Bit Error Rate (BER) and a remarkable improvement in the overall system performance, offering a practical solution for complex LIS deployments. Full article
(This article belongs to the Special Issue Applications of Wireless and Mobile Communications)
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29 pages, 6184 KiB  
Article
MANET Routing Protocols’ Performance Assessment Under Dynamic Network Conditions
by Ibrahim Mohsen Selim, Naglaa Sayed Abdelrehem, Walaa M. Alayed, Hesham M. Elbadawy and Rowayda A. Sadek
Appl. Sci. 2025, 15(6), 2891; https://doi.org/10.3390/app15062891 - 7 Mar 2025
Viewed by 1275
Abstract
Mobile Ad Hoc Networks (MANETs) are decentralized wireless networks characterized by dynamic topologies and the absence of fixed infrastructure. These unique features make MANETs critical for applications such as disaster recovery, military operations, and IoT systems. However, they also pose significant challenges for [...] Read more.
Mobile Ad Hoc Networks (MANETs) are decentralized wireless networks characterized by dynamic topologies and the absence of fixed infrastructure. These unique features make MANETs critical for applications such as disaster recovery, military operations, and IoT systems. However, they also pose significant challenges for efficient and effective routing. This study evaluates the performance of eight MANET routing protocols: Optimized Link State Routing (OLSR), Destination-Sequenced Distance Vector (DSDV), Ad Hoc On-Demand Distance Vector (AODV), Dynamic Source Routing (DSR), Ad Hoc On-Demand Multipath Distance Vector (AOMDV), Temporally Ordered Routing Algorithm (TORA), Zone Routing Protocol (ZRP), and Geographic Routing Protocol (GRP). Using a custom simulation environment in OMNeT++ 6.0.1 with INET-4.5.0, the protocols were tested under four scenarios with varying node densities (20, 80, 200, and 500 nodes). The simulations utilized the Random Waypoint Mobility model to mimic dynamic node movement and evaluated key performance metrics, including network load, throughput, delay, energy consumption, jitter, packet loss rate, and packet delivery ratio. The results reveal that proactive protocols like OLSR are ideal for stable, low-density environments, while reactive protocols such as AOMDV and TORA excel in dynamic, high-mobility scenarios. Hybrid protocols, particularly GRP, demonstrate a balanced approach; achieving superior overall performance with up to 30% lower energy consumption and higher packet delivery ratios compared to reactive protocols. These findings provide practical insights into the optimal selection and deployment of MANET routing protocols for diverse applications, emphasizing the potential of hybrid protocols for modern networks like IoT and emergency response systems. Full article
(This article belongs to the Special Issue Applications of Wireless and Mobile Communications)
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19 pages, 8825 KiB  
Article
A Fully Integrated High Linearity CMOS Dual-Band Power Amplifier for WLAN Applications in 55-Nm CMOS
by Haoyu Shen and Bin Wu
Appl. Sci. 2024, 14(23), 10768; https://doi.org/10.3390/app142310768 - 21 Nov 2024
Viewed by 1078
Abstract
This paper presents a dual-band fully integrated high linearity CMOS power amplifier (PA). The PA employs a reconfigurable transformer in the input matching network to achieve low reflection coefficient across both bands, demonstrating significant flexibility in the design of dual-band power amplifiers with [...] Read more.
This paper presents a dual-band fully integrated high linearity CMOS power amplifier (PA). The PA employs a reconfigurable transformer in the input matching network to achieve low reflection coefficient across both bands, demonstrating significant flexibility in the design of dual-band power amplifiers with high output powers. Additionally, a detailed design methodology for the dual-band matching network is introduced. By utilizing this methodology, the PA has been designed using 55 nm CMOS technology. For continuous-wave operation, the PA achieves a saturated power (Psat) of 28.03 dBm and 27.5–28.2 dBm, with power-added efficiency (PAE) of 33.2% and 24.6–31.1%, in the 2.4 GHz and 5 GHz WLAN bands, respectively. Concurrently, the PA power cells, which employ multi-gate transistor (MGTR) technology, achieve an intermodulation distortion (IMD3) of below 30 dBc at an output power of 15 dBm in both the 2.4 GHz and 5 GHz WLAN bands. The proposed PA outperforms other dual-band or multi-band PAs in terms of output power and exhibits great potential for WLAN applications. Full article
(This article belongs to the Special Issue Applications of Wireless and Mobile Communications)
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