Advances in Wireless Communication Performance Analysis

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Networks".

Deadline for manuscript submissions: 15 January 2025 | Viewed by 1371

Special Issue Editor


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Guest Editor
School of Computer Engineering and Applied Mathematics, Hankyong National University, Anseong City 17579, Republic of Korea
Interests: wireless communications; multicast routing protocol; AI/ML

Special Issue Information

Dear Colleagues,

The development of wireless communication techniques improves system performance, such as by optimizing spectral efficiency and end-to-end throughput. However, wireless system model improvement is complex. This also brings the challenge of wireless communication performance analysis since an advanced wireless communication system is too complicated for utilization to analyze system performance. Nevertheless, the system’s performance needs to be analyzed for system evaluation. Thus, recently, although model-based approaches are intricate, data-driven approaches such as machine learning can capture the relationship between system parameters and system performance. Thus, they can provide insights into advanced wireless communication. In addition, the advanced performance analysis method for advanced wireless network systems also requires study as it can provide insights into advanced wireless communication.

In this Special Issue, we would like to invite researchers who study advanced wireless communications and networks and/or advanced performance analysis to submit their work. Topics of interest include, but are not limited to, the following:

  • Wireless communications and networks;
  • Performance analysis;
  • Data-driven approaches.

Dr. Kyusung Shim
Guest Editor

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Keywords

  • wireless communications and networks
  • performance analysis
  • data-driven approaches

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Published Papers (2 papers)

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Research

22 pages, 1556 KiB  
Article
Mobility-Based Multi-Hop Content Precaching Scheme in Content-Centric Vehicular Networks
by Hyunseok Choi, Youngju Nam, Gayeong Kim and Euisin Lee
Electronics 2024, 13(22), 4367; https://doi.org/10.3390/electronics13224367 - 7 Nov 2024
Viewed by 311
Abstract
Due to the rapid development of smart vehicles, such as self-driving cars, the demand for mobile data traffic by vehicle users has increased so much that base stations cannot handle it, causing delays in content provision. The burden on the base station can [...] Read more.
Due to the rapid development of smart vehicles, such as self-driving cars, the demand for mobile data traffic by vehicle users has increased so much that base stations cannot handle it, causing delays in content provision. The burden on the base station can be alleviated through roadside units (RSUs) to distribute the demand. However, outage zones, which fall outside the communication range of RSUs, still exist due to their high deployment cost. Existing schemes for covering outage zones have only considered single-hop precaching vehicles to provide precached content, which is insufficient to reduce outage zones effectively. Therefore, we propose a scheme to reduce outage zones by maximizing the amount of precached content using multi-hop precaching vehicles. The proposed scheme optimally selects precaching vehicles through a numerical model that calculates the amount of precached content. It enhances the process of multi-hop precaching by comparing the connection time of vehicles with the dark area time in the outage zone. To prevent excessive overheads due to frequent precaching vehicle handovers, the proposed scheme limits the selection to vehicles with a longer communication time, based on a precaching restriction indicator in the multi-hop precaching vehicle selection process. The simulation results show that our scheme outperforms representative schemes based on single-hop precaching. Full article
(This article belongs to the Special Issue Advances in Wireless Communication Performance Analysis)
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12 pages, 2838 KiB  
Article
THz Wave Power Enhancement Using a Microstrip Line-Based Combiner Integrated with Arrayed UTC-PDs
by Hussein Ssali, Yoshiki Kamiura, Ryo Doi, Hiroki Agemori, Ming Che, Yuya Mikami and Kazutoshi Kato
Electronics 2024, 13(13), 2661; https://doi.org/10.3390/electronics13132661 - 7 Jul 2024
Viewed by 782
Abstract
Advancements in semiconductor devices, such as Uni-travelling-carrier photodiodes (UTC-PDs), have played a significant role in the development of Terahertz communication technology. However, the persistent challenge is the limited output power from a single UTC-PD required for practical transmission distances. To enhance the output [...] Read more.
Advancements in semiconductor devices, such as Uni-travelling-carrier photodiodes (UTC-PDs), have played a significant role in the development of Terahertz communication technology. However, the persistent challenge is the limited output power from a single UTC-PD required for practical transmission distances. To enhance the output power, we propose and demonstrate a novel Terahertz wave power combining technique using a photomixer device comprising two arrayed UTC-PDs monolithically integrated with a microstrip line-based 2 × 1 Wilkinson power combiner and a patch antenna on a Silicon Carbide (SiC) substrate at 300 GHz. When the two UTC-PDs are activated at photocurrents of 8 mA and 10 mA, the device exhibits a 7.3 dB increase in power relative to the power obtained when only the 8 mA UTC-PD is activated, and a 4.4 dB increase in power relative to the power obtained with the 10 mA UTC-PD. This implies that power can be enhanced by a factor of N2 if the photocurrent is multiplied by N. Additionally, we demonstrate that the UTC-PD output saturation depends on the space charge effect, which modulates the electric field in the depletion region and results from critical charge density of about 80 kA/cm2 for the device in this work. Full article
(This article belongs to the Special Issue Advances in Wireless Communication Performance Analysis)
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