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2023 IEEE Globecom Workshops, GC Wkshps 2023

作者： Pi, Xiangyu Zhu, Lipeng Xiao, Zhenyu Zhang, Rui School of Electronic and Information Engineering Beihang University Beijing100191 China National University of Singapore Department of Electrical and Computer Engineering 117583 Singapore Shenzhen Research Institute of Big Data The Chinese University of Hong Kong Shenzhen518172 China

ISBN: (纸本)9798350370218

This paper studies the deployment of multiple movable antennas (MAs) at the base station (BS) for enhancing the multiuser communication performance. First, we model the multiuser channel in the uplink to characterize the wireless channel variation caused by MAs' movements at the BS. Then, an optimization problem is formulated to maximize the minimum achievable rate among multiple users for MA-aided uplink multiuser communications by jointly optimizing the MAs' positions, their receive combining at the BS, and the transmit power of users, under the constraints of finite moving region of MAs, minimum inter-MA distance, and maximum transmit power of each user. To solve this challenging non-convex optimization problem, a two-loop iterative algorithm is proposed by leveraging the particle swarm optimization (PSO) method. Specifically, the outer-loop updates the positions of a set of particles, where each particle's position represents one realization of the antenna positioning vector (APV) of all MAs. The inner-loop implements the fitness evaluation for each particle in terms of the max-min achievable rate of multiple users with its corresponding APV, where the receive combining matrix of the BS and the transmit power of each user are optimized by applying the block coordinate descent (BCD) technique. Simulation results show that the antenna position optimization for MAs-aided BSs can significantly improve the rate performance as compared to conventional BSs with fixed-position antennas (FPAs). © 2023 IEEE.

关键词： antenna positioning Movable antenna (MA) particle swarm optimization (PSO) uplink communication

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Combined Bulk and Per-subcarrier Relay Selection Enabled by Cascaded Neural Computing

Combined Bulk and Per-subcarrier Relay Selection Enabled by ...

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2023 IEEE INFOCOM Conference on computer Communications Workshops, INFOCOM WKSHPS 2023

作者： Li, Wenwu Dang, Shuping Zhang, Zhenrong Ge, Zhihui School of Computer Electronics and Information Guangxi University Nanning530004 China University of Bristol Department of Electrical and Electronic Engineering BristolBS81UB United Kingdom

ISBN: (纸本)9781665494274

Cooperative relaying has been recognized as a key technology of sixth generation (6G) networks. It can enhance the flexibility of network deployment and improve coverage. Multi-carrier relay selection is required to efficiently allocate spatial resources in multi-carrier cooperative networks. To effectively reduce the end-to-end latency in multi-carrier cooperative networks, two basic multi-carrier relay selection strategies have been enabled by machine learning, i.e., bulk relay selection, and per-subcarrier relay selection. Nevertheless, bulk relay selection enabled by machine learning may lead to a low coding gain. Per-sub carrier relay selection enabled by machine learning may lead to a complex artificial neural network (ANN) structure when there are many relays in future wireless networks. To balance the complexity and performance, we design a newly cascaded ANN (CANN) to perform the combined bulk and per-subcarrier relay selection scheme. After training the CANN, we demonstrate through simulations that the proposed method can effectively achieve a compromise between complexity and performance. © 2023 IEEE.

关键词： Neural networks

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An Experimental Research on Temperature Accuracy Algorithm in Fan Coil Thermostat 6

An Experimental Research on Temperature Accuracy Algorithm i...

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6th IEEE International Electrical and Energy Conference, CIEEC 2023

作者： Ari, Yunus Cücük, Ergün Karateke, Seda Institute of Graduate Studies Istanbul University - Cerrahpaşa Electric and Electronic Engineering Istanbul34320 Turkey Control and Automation Systems Industry and Trade Inc. Department of Research and Development Ges Teknik Air Conditioning Istanbul34852 Turkey Istanbul Topkapi University Faculty of Engineering Department of Computer Engineering Istanbul34087 Turkey

ISBN: (纸本)9798350346671

The efficient operation of HVAC&R systems are based on keeping indoor temperature and air quality at an optimum level without disturbing comfort. Starting from this point, in this experimental research, the factors affecting the measurement accuracy during the room temperature detection of a wall mount fan coil thermostat were examined. Among the external effects, the effect of the device components on the measurement was focused and the solution of the measurement deviations occurred in this extent was investigated. Based on the experiments, the algorithm that must be applied to reach the optimum temperature measurement of a room thermostat developed for Fan Coil systems was proposed. © 2023 IEEE.

关键词： Thermostats

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An Experimental Investigation into High Bandwidth Wireless Communication Standards for the Underground Mine Stope 16

An Experimental Investigation into High Bandwidth Wireless C...

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16th IEEE AFRICON, AFRICON 2023

作者： Chetty, Brenton Lloyd Isaac, Sherrin John Walingo, Tom Electronic and Computer Engineering University of KwaZulu-Natal Department of Electrical Durban South Africa Next Generation Enterprises and Institutions Council for Scientific and Industrial Research Pretoria South Africa

ISBN: (纸本)9798350336214

There are many challenges associated with developing a feasible wireless communication system for the harsh underground mining environment. Radio signals suffer from strong attenuations due to the excessive reflections, diffractions, scatterings, and multipath caused by the irregular surface characteristics of the stope. This necessitates the need for a robust underground mine wireless communication network that can withstand these phenomena. The network will still need to provide enough bandwidth for productivity enhancement applications as well as maintain low latency alongside robustness for critical mine safety applications. Coded OFDM (COFDM) was identified as the wireless standard for dealing with the harsh mining environment. However, due to the standard not being mainstream, the implementation of such a system will be extremely expensive. This research identifies the possibility of utilising Wi-Fi6 (***) which utilizes Orthogonal Frequency Division Multiple Access (OFDMA) as a more cost-effective alternative as compared to COFDM. Experimental investigations for comparing COFDM and Wi-Fi6 have been conducted in terms of latency, jitter and throughput measurements in several different topology and configurations. The uncoded Wi- Fi6 was found to be quite capable for high bandwidth productivity enhancement applications for the stope at an economical price point as compared to the more robust COFDM. Hence the more expensive COFDM should only be deployed for the critical mine safety applications. © 2023 IEEE.

关键词： Frequency division multiple access

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Adaptive Context-Aware Multi-Path Transmission Control for VR/AR Content: A Deep Reinforcement Learning Approach

arXiv

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arXiv 2024年

作者： Ahmed, Shakil Sabuj, Saifur Rahman Khokhar, Ashfaq Department of Electrical and Computer Engineering Iowa State University AmesIA United States Department of Electrical and Electronic Engineering BRAC University Bangladesh

This paper introduces the Adaptive Context-Aware Multi-Path Transmission Control (ACMPTC) system, an efficient approach designed to optimize the performance of Multi-Path Transmission Control Protocol (MPTCP) for data-intensive applications such as augmented and virtual reality (AR/VR) streaming. ACMPTC addresses the limitations of conventional MPTCP by leveraging deep reinforcement learning (DRL) for agile end-to-end path management and optimal bandwidth allocation, facilitating path realignment across diverse network environments. The primary contributions of this system include comprehensive bandwidth requirement analysis, feedback mechanisms, congestion forecasting, and adaptive data routing, all of which contribute to low latency and high network utilization. A mathematical model has been developed to validate the DRL-based ACMPTC framework’s effectiveness, which optimizes path selection, bandwidth allocation, and congestion control under varying and unpredictable network conditions. Extensive simulations demonstrate that ACMPTC outperforms competing MPTCP schemes in terms of throughput, latency, and quality of service, making it a promising candidate for new network connection management in AR/VR applications and adaptive network traffic management techniques. © 2024, CC BY.

关键词： Quality of service

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A High-Efficiency Dye-Sensitized Solar Cell Using PCDTBT:PCBM as Solid Electrolyte and Graphene Oxide as Hole Transport Layer

A High-Efficiency Dye-Sensitized Solar Cell Using PCDTBT:PCB...

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International Conference on Electrical engineering and Information & Communication Technology (ICEEICT)

作者： Md. Nahidul Islam Muhammad Rashique Hamjah Chowdhury Md. Hojaifa Daiyan Chowdhury Muhammad Johirul Islam Md. Lutfur Rahaman Md. Iqbal Bahar Chowdhury Department of Electrical & Electronic Engineering United International University Dhaka Bangladesh Department of Computer Science & Engineering United International University Dhaka Bangladesh

ISBN: (数字)9798350385779

ISBN: (纸本)9798350385786

In this work, a novel p-graphene/GrO IPCDTBT:PCBM/dye/AI based dye-sensitized solar cell (DSSC) has been designed, implemented, and investigated using Silvaco TCAD software. The proposed cell uses PCDTBT:PCBM as the solid electrolyte (ss-electrolyte) in place of commonly used P3HT to ensure higher efficiency. As a front electrode, the p-graphene is used instead of conventional ITO/FTO to reduce the cost. The graphene oxide (GrO) is used as a hole transport layer (HTL) instead of widely-used PEDOT:PSS to enhance the stability of the cell. Layer thicknesses of the ss-electrolyte and HTLs are optimized for maximum efficiency. An appropriate ARC is employed to further enhance the efficiency. The investigated cell, after all these enhancement techniques, attains an efficiency of 13.38%.

关键词： Electrodes Measurement Costs Photovoltaic cells Graphene Indium tin oxide Electrolytes

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Designing a Digital Repository for the Cultural and Natural Heritage of the Island of Zakynthos

Designing a Digital Repository for the Cultural and Natural ...

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South Eastern European Design Automation, computer engineering, computer Networks and Social Media Conference (SEEDA-CECNSM)

作者： Stergios Palamas Katerina Kabassi Phivos Mylonas Department of Informatics Ionian University Corfu Greece Department of Environment Ionian University Zakynthos Greece Department of Informatics and Computer Engineering University of West Attica Athens Greece

ISBN: (数字)9798331504489

ISBN: (纸本)9798331504496

The present study discusses the design of a digital archive for the preservation and dissemination of the Cultural and Natural Heritage of Zakynthos Island. The proposed architecture suggests a Content Management System (CMS) to provide the core functionality, while a web application, interacting with the CMS through a RESTFul API, will provide an alternative front-end targeting mainly on-site end-users using mobile devices. Authors and contributors can submit multimedia content to the repository, which is reviewed and approved by system administrators before publishing, ensuring this way the information quality and *** system will also provide a RESTful API, allowing integration with 3 rd party systems and web applications, thereby expanding the repository's reach and capabilities. Content delivery is personalized based on user profiles, location, and preferences, enhancing engagement and usability. By integrating these features, the repository effectively preserves and makes accessible the unique cultural and natural heritage of Zakynthos to both local and global audiences.

关键词： Social networking (online) Restful API computer architecture Service-oriented architecture Cultural differences Global communication Biodiversity Usability Sustainable development Standards

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Energy-Efficient Near-Field Wideband Beamforming with Circular Arrays

Energy-Efficient Near-Field Wideband Beamforming with Circul...

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2024 IEEE Global Communications Conference, GLOBECOM 2024

作者： Guo, Yunhui Zhang, Yang Wang, Zhaolin Liu, Yuanwei Ding, Zhiguo Xidian University State Key Laboratory of Integrated Service Networks Xi'an710071 China Queen Mary University of London School of Electronic Engineering and Computer Science LondonE1 4NS United Kingdom Khalifa University 6G Center Department of Computer and Communication Engineering Abu Dhabi United Arab Emirates

ISBN: (纸本)9798350351255

The beamforming performance of the uniform circular array (UCA) in near-field wideband communication systems is investigated. Firstly, the unique beam squint effect in near-field wideband UCA systems is analyzed in both the distance and angular domains. It is demonstrated that the generated beams at different frequencies are focused at different locations, resulting in significant beamforming loss. To alleviate this unique beam squint effect and facilitate beamfocusing, an energy-efficient beamforming scheme based on the true-time delay (TTD) architecture is proposed. Specifically, the phase shifters (PSs) and the time delay of TTDs are designed based on the analytical formula for beamforming gain. Additionally, the minimum number of TTDs required to achieve a predetermined beamforming gain while minimizing energy consumption is quantified. Numerical results show that the proposed beamforming scheme effectively eliminates the near-field beam squint and outperforms the conventional schemes in terms of spectral efficiency and energy efficiency. © 2024 IEEE.

关键词： Near field communication

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Improved Sequencing Heuristic DSDV Protocol Using Nomadic Mobility Model for FANETS

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computers, Materials & Continua 2022年第2期70卷 3653-3666页

作者： Inam Ullah Khan Muhammad Abul Hassan Muhammad Fayaz Jeonghwan Gwak Muhammad Adnan Aziz Department of Electronic Engineering Isra University(SEAS)Islamabad44000Pakistan Department of Computing and Technology Abasyn University Peshawar25000Pakistan Deparment of Computer Engineering Jeju National UniversityJejuKorea Department of Software Korea National University of TransportationChungju27469Korea Department of Biomedical Engineering Korea National University of TransportationChungju27469Korea Department of AI Robotics Engineering Korea National University of TransportationChungju27469Korea Department of IT&Energy Convergence(BK21 FOUR) Korea National University of TransportationChungju27469Korea

Most interesting area is the growing demand of flying-IoT mergers with smart ***,aerial vehicles,especially unmanned aerial vehicles(UAVs),have limited capabilities for maintaining node energy *** order to communicate effectively,IoT is a key element for smart *** improving network performance,routing protocols can be deployed in flying-IoT to improve latency,packet drop rate,packet delivery,power utilization,and average-end-to-end ***,in literature,proposed techniques are verymuch complex which cannot be easily implemented in realworld *** issue leads to the development of lightweight energyefficient routing in flying-IoT *** paper addresses the energy conservation problem in *** paper presents a novel approach for the internet of flying vehicles using DSDV ***-DSDV gives the notion of bellman-ford algorithm consisting of routing updates,information broadcasting,and stale *** shows optimal results in comparison with other contemporary routing *** mobility model is utilized in the scenario of flying networks to check the performance of routing protocols.

关键词： Flying-IoT DSR smart cities UAV’s FANETS

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SimuSIL: A Software-in-the-Loop Simulator for Cooperative Driving in Intelligent Transportation Systems

SimuSIL: A Software-in-the-Loop Simulator for Cooperative Dr...

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Moratuwa engineering Research Conference (MERCon)

作者： Ranga Kulathunga Osanda De Silva Dilshani Abeywickrama Tharindu Vithanage Dileeka Dias Department of Electrical and Computer Engineering Southern Illinois University Carbondale IL USA Department of Electronic and Telecommunication Engineering University of Moratuwa Sri Lanka

ISBN: (数字)9798331529048

ISBN: (纸本)9798331529055

We present SimuSIL, a software-in-the-loop (SIL) simulation platform using open-source tools to capture the behavior of connected vehicles in intelligent transportation system (ITS) applications. Connected cooperative vehicles use vehicle-to-everything (V2X) communication to enable ITS. Real-world testing of ITS applications involves significant risks. Simulating true vehicle dynamics and real-time behavior is challenging in discrete time step environments. We extend the Veins platform, integrating SUMO and OMNet++, with Webots, a simulator for robots and vehicles. Webots implements engine control unit (ECU) models in software to mimic physical vehicle behavior. We validate SimuSIL with a car-following application using Webots and demonstrate its ability to capture communication anomalies like packet losses. Additionally, we demonstrate fuel consumption and CO 2 emissions in autonomous eco-driving versus human driving.

关键词： Connected vehicles Biological system modeling Vehicular ad hoc networks Transportation Real-time systems Software Fuels Vehicle dynamics Vehicle-to-everything Testing

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