2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)最新文献_第2页

A Novel Semi-Dynamic Bandwidth Allocation Algorithm for the Integrated EPON and WiMAX Based on Auction Process 一种基于拍卖过程的EPON和WiMAX集成半动态带宽分配算法

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355852

Mohammad A. Maher, F. A. Abd El-Samie, O. Zahran

{"title":"A Novel Semi-Dynamic Bandwidth Allocation Algorithm for the Integrated EPON and WiMAX Based on Auction Process","authors":"Mohammad A. Maher, F. A. Abd El-Samie, O. Zahran","doi":"10.1109/JAC-ECC51597.2020.9355852","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355852","url":null,"abstract":"Integration of Ethernet passive optical network (EPON) and WiMAX technologies is viewed as a great solution for next-generation broadband access networks. In the systems adopting this strategy, weighty bandwidth allocation schemes are fundamental to fulfil the quality of service (QoS) and fairness requirements of different traffic classes. Existing proposals to overcome the bandwidth allocation problem in EPON/WiMAX networks dismiss collaboration between the self-interested EPON and WiMAX service providers (WSPs). This study presents a novel EPON-based semi-dynamic bandwidth allocation (S-DBA) method that shows points of interest in the integration process. In the proposed algorithm depending on the auction process, the optical line terminal runs an auction to adequately post the optical network unit bandwidth that distributes the most elevated bidders based on the measurement of the accessible bandwidth. Simulation results demonstrate massive upgrades compared with fair sharing using dual-service-level agreements, ‘limited service’ interleaved polling with adaptive cycle time methods, bandwidth allocation strategy using Stackelberg game, and bandwidth allocation strategy using coalition game regarding the quality of service parameters such as throughput and time delay. This will be extremely helpful for optical system upgrading and improvement with minimal effort.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122564103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Improved Multi-Position Calibration Method for Mechanical Inertia Measurement Units 改进的机械惯性测量单元多位置标定方法

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355909

Salem Abd El-Hakem Hegazy, A. Kamel, I. Arafa, Y. Elhalwagy

{"title":"Improved Multi-Position Calibration Method for Mechanical Inertia Measurement Units","authors":"Salem Abd El-Hakem Hegazy, A. Kamel, I. Arafa, Y. Elhalwagy","doi":"10.1109/JAC-ECC51597.2020.9355909","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355909","url":null,"abstract":"Inertial Navigation System (INS) is used in a variety of applications such as missile and marine navigation. INS is comprised of an inertial measuring unit (IMU) and a processor unit that performs the navigation mathematics calculations. In order to get accurate navigation data via INS, calibration of IMU sensors are necessary. Mechanical sensors are used in high-precision navigation, such as strategic missiles and are characterized by their low random noise. However, deterministic errors can cause very significant errors in positioning such as biases, scale factors, non-orthogonality errors, and g-sensitive and non-g-sensitive drifts. Therefore, determining an effective and accurate method of calibration is necessary to estimate and compensate for these errors. The suggested methodology accurately calculates the calibration parameters to minimize those errors. The traditional calibration techniques of the accelerometer are restricted in precision, since the estimation of scale factor and bias obtained from a limited number of positions depending on the gravity direction. These calibration techniques are also limited in the estimation of g-sensitive and non-g-sensitive drifts impacting gyro performance. This paper presents a new technique of calibration that overcomes these drawbacks, based on an enhancement of multi-position technique. Experimental results for the proposed technique was carried out to confirm its efficiency.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121763733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Design of SDR Simulation for Wireless Communication between Ground Station and CubeSat Implemented by LabVIEW 基于LabVIEW的地面站与立方体卫星无线通信SDR仿真设计

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355965

Nariman A. Salam Bauomy, Eslam Ahmed Elbeh

引用次数: 1

Investigating speckle pattern produced by biological tissue via image quality assessment 通过图像质量评估研究生物组织产生的斑点图案

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355864

Doaa Youssef, Salah Hassab-Elnaby

引用次数: 3

Simulink based Modeling and Performance Analysis of NB-IoT Uplink Scheduler 基于Simulink的NB-IoT上行调度建模与性能分析

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355921

Ahmed M. Abbas, A. Zekry, Khaled Y. Youssef, I. Mahmoud

引用次数: 4

UTC(NIS) Steering Techniques with Few Number of Atomic Clocks 使用少量原子钟的UTC(NIS)转向技术

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355878

A. I. Mostafa, A. Zekry

{"title":"UTC(NIS) Steering Techniques with Few Number of Atomic Clocks","authors":"A. I. Mostafa, A. Zekry","doi":"10.1109/jac-ecc51597.2020.9355878","DOIUrl":"https://doi.org/10.1109/jac-ecc51597.2020.9355878","url":null,"abstract":"Till now, the Coordinated Universal Time of the National Institute of Standards (UTC(NIS)), which is the Egyptian Time Scale (TS), is generated by using a single Cesium (Cs) atomic clock. But, the reliability and frequency stability of UTC(NIS) in that case are limited by those of the single Cs clock. In the near future, UTC(NIS) will be generated by using the average atomic TS (TA(NIS)) from an ensemble of Cs clocks to enhance its reliability and frequency stability. In this paper, a simulation is carried out to check the effectiveness of generating TA(NIS) from the 3 Cs clocks of NIS clock ensemble. Results from TA(NIS) simulation will be presented and discussed before it is used for UTC(NIS) generation in the real-time. Also, in this paper, the two steering techniques that are currently used for UTC(NIS) generation instead of TA(NIS) to enhance its time accuracy with respect to the international TS (UTC) are introduced. Results show that these techniques were effective and able to reduce the TS difference values (UTC-UTC(NIS)) to below ± 100 ns in the last 3 years, as recommended by the international Consultative Committee of Time and Frequency (CCTF).","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131819384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Design and Analysis of Hexagonal Dipole Nano-Rectenna Based on MIIM Diode for Solar Energy Harvesting 基于MIIM二极管的太阳能收集用六方偶极子纳米整流天线设计与分析

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355947

F. M. Abdel Hamied, K. Mahmoud, M. Hussein, S. Obayya

{"title":"Design and Analysis of Hexagonal Dipole Nano-Rectenna Based on MIIM Diode for Solar Energy Harvesting","authors":"F. M. Abdel Hamied, K. Mahmoud, M. Hussein, S. Obayya","doi":"10.1109/jac-ecc51597.2020.9355947","DOIUrl":"https://doi.org/10.1109/jac-ecc51597.2020.9355947","url":null,"abstract":"In this work, new design of hexagonal dipole nano-rectenna for solar energy harvesting is presented. The proposed design is composed of silver hexagonal nano-dipole antenna integrated with metal insulator metal (MIM) tunnel diode with single and double insulators. The proposed hexagonal nano-dipole antenna consists of two identical elements separated apart by air gap. The MIM tunnel diode is realized by overlapping the nano-antenna (NA) arms and sandwiching metal oxide layer in between to benefit from the high localized fields at the NA gap. The reported design performance in terms of the total radiation efficiency, directivity and total harvesting efficiency is studied. The numerical study of NA is carried out in the wavelength range 300–3000 nm, using the finite integral technique (FIT) method. The reported design has an average total radiation efficiency of 92.28% in the wavelength of range (300–3000) nm. The proposed NA with single insulator MIM diode, and double insulator, MIIM diode, give roughly the same results of maximum radiation efficiency of 98%, maximum directivity of 14 at the wavelength of 500 nm and total harvesting efficiency of 95.35%. These results are attributed to the sharp tips of hexagonal arms. Furthermore, MIIM diode offers zero bias voltage responsivity of 17.29 A/W and maximum responsivity of −170.9 A/W. This enhancement is due to the use of multi-insulators between the two metals.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131772861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Solar Cell Modification for Large Area Motion Detection: Proof of Concept 用于大面积运动检测的太阳能电池改造:概念验证

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355908

Heba Abdelmoneim Atia, A. Zekry, A. Shaker

引用次数: 0

An AODV-Based Routing Scheme for Large-Scale Bluetooth Low-Energy Mesh Networks 一种基于aodv的大规模蓝牙低能量网状网络路由方案

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355932

A. Hussein, Reham Tarek, Haytham Osama, Rana Fawzy, K. Elsayed, M. Taha

引用次数: 3

A Review of IoT Security Challenges and Solutions 物联网安全挑战与解决方案综述

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355854

Farhad Mehdipour

引用次数: 2