Journal of Telecommunications and Information Technology最新文献_第2页

High-Capacity Coherent WDM Networks Empowered by Probabilistic Shaping and End-to-End Deep Learning 借助概率整形和端到端深度学习的大容量相干波分复用网络

Journal of Telecommunications and Information Technology Pub Date : 2024-06-04 DOI: 10.26636/jtit.2024.2.1482

Ayam M. Abbass, Raad Fyath

{"title":"High-Capacity Coherent WDM Networks Empowered by Probabilistic Shaping and End-to-End Deep Learning","authors":"Ayam M. Abbass, Raad Fyath","doi":"10.26636/jtit.2024.2.1482","DOIUrl":"https://doi.org/10.26636/jtit.2024.2.1482","url":null,"abstract":"To optimize the functionality of coherent optical fiber communication (OFC) systems and enhance their capacity related to long-haul transmissions, wavelength-division multiplexing (WDM) and probabilistic constellation shaping (PCS) techniques have been used. This paper develops an end-to-end (E2E) deep learning (DL)-based PCS algorithm, i.e., autoencoder (AE) for a high-order modulation format WDM system that minimizes nonlinear effects while ensuring high capacity and considers system parameters, in particular those related to the OFC channel. Only the AE of the central channel is trained to meet the specified performance objective, as the system design employs identical AEs in each WDM channel. The simulation results show that the architecture should consist of two hidden layers, with thirty two nodes per hidden layer and a ”32×modulation order” batch size to obtain optimal system performance, when designing AE using a dense layer neural network. The behavior of the AE is examined to determine the optimum launch-power ranges that enhance the system's performance. The developed AE-based PCS-WDM provides a 0.4 shaping gain and outperforms conventional solutions.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":"28 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141387968","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: 0

Deep Learning-based Beamforming Approach Incorporating Linear Antenna Arrays 基于深度学习的波束成形方法，包含线性天线阵列

Journal of Telecommunications and Information Technology Pub Date : 2024-05-22 DOI: 10.26636/jtit.2024.2.1530

Daulappa Bhalke, Pavan Paikrao, Jaume Anguera

引用次数: 0

Improving Performance of MC-CDMA Systems Using UTTCM Channel Coding 使用 UTTCM 信道编码提高 MC-CDMA 系统的性能

Journal of Telecommunications and Information Technology Pub Date : 2024-05-20 DOI: 10.26636/jtit.2024.2.1547

R. Bendjillali, Mohammed Sofiane Bendelhoum, Abderraouf Elarbi, M. R. Lahcene

{"title":"Improving Performance of MC-CDMA Systems Using UTTCM Channel Coding","authors":"R. Bendjillali, Mohammed Sofiane Bendelhoum, Abderraouf Elarbi, M. R. Lahcene","doi":"10.26636/jtit.2024.2.1547","DOIUrl":"https://doi.org/10.26636/jtit.2024.2.1547","url":null,"abstract":"Over the past decade, personal communications have witnessed exponential growth, fueled by the increasing number of connected users and the diversity of transmitted data types. This expansion necessitates a boost in the transmission systems' capacity to accommodate higher user numbers and data rates, simultaneously striving to optimize cost and complexity. Consequently, future communication systems are pivoting towards multi-carrier spread spectrum techniques (MC-CDMA), capitalizing on the robustness of OFDM multi-carrier transmissions against multipath propagation and leveraging the flexibility of the code division multiple access (CDMA) technique. This study addresses data transmission quality-related concerns within an MC-CDMA system by implementing UTTCM error correction codes. These codes aim to enhance channel spectrum efficiency and mitigate error probability. Simulation results demonstrate that the proposed transmission scheme offers significant improvements in terms of bit error rate and signal-to-noise ratio, while maximizing the bandwidth shared among users. Additionally, the incorporation of such equalization techniques as zero forcing (ZF) and minimum mean square error (MMSE), ensures extensive compensation for the channel selectivity effect.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":"40 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141122145","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: 0

An Energy Efficient and Scalable WSN with Enhanced Data Aggregation Accuracy 一种能效高、可扩展的 WSN，具有更高的数据聚合精度

Journal of Telecommunications and Information Technology Pub Date : 2024-05-07 DOI: 10.26636/jtit.2024.2.1510

N. Saadallah, Salah Abdulghai Alabady

引用次数: 0

Reconfigurable MIMO Antenna for IoT Wireless Applications Controlled by Embedded System 由嵌入式系统控制的面向物联网无线应用的可重构多输入多输出天线

Journal of Telecommunications and Information Technology Pub Date : 2024-04-17 DOI: 10.26636/jtit.2024.2.1532

Naresh Kumar, Pradeep Kumar, Manish Sharma

引用次数: 0

Secure Data Delivery in a Software-Defined Wireless Body Area Network 软件定义的无线体域网络中的安全数据传输

Journal of Telecommunications and Information Technology Pub Date : 2024-04-17 DOI: 10.26636/jtit.2024.2.1491

Zahraa M. Yahya, M. F. Al-Gailani

{"title":"Secure Data Delivery in a Software-Defined Wireless Body Area Network","authors":"Zahraa M. Yahya, M. F. Al-Gailani","doi":"10.26636/jtit.2024.2.1491","DOIUrl":"https://doi.org/10.26636/jtit.2024.2.1491","url":null,"abstract":"High security solutions are highly important in wireless medical environments, since patient data is confidential, sensitive and must be transmitted over a secure connection. Accordingly, a hybrid encryption method is proposed to ensure data confidentiality (RSA-2048 for key exchange using ACL in SDN with the addition of AES-256-CTR and a hashed secret key for data encryption), and the encrypted data is stored in a private blockchain with the DBFT consensus algorithm to ensure the integrity of data before it being accessed by a doctor's application which decrypts and displays the relevant information. The system was programmed using Python, in an NS3.37 simulator installed on Ubuntu with a MySQL database created using the Apache XAMPP. The product turned out to be a highly secure system for transmitting data from a medical sensor to the doctor's application, offering a throughput of approximately 9 Gbps for both encryption and decryption tasks, while the processing time equaled 0.014 µs per a 128-bit block size for both encryption and decryption, with latency amounting to 0.14 s per 1 KB of data, and the blockchain agreement time equaling 4 ms per 1 KB.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":" 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140691514","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: 0

A Queue Monitoring System in OpenFlow Software Defined Networks OpenFlow 软件定义网络中的队列监控系统

Journal of Telecommunications and Information Technology Pub Date : 2024-04-15 DOI: 10.26636/jtit.2017.1.648

Shiva Rowshanrad, Sahar Namvarasl, M. Keshtgari

{"title":"A Queue Monitoring System in OpenFlow Software Defined Networks","authors":"Shiva Rowshanrad, Sahar Namvarasl, M. Keshtgari","doi":"10.26636/jtit.2017.1.648","DOIUrl":"https://doi.org/10.26636/jtit.2017.1.648","url":null,"abstract":"Real-time trac characteristic is dierent and it is very sensitive to delay. To meet trac specications in real time, monitoring systems are used as an important part of networking. Many monitoring systems are deployed to have an update view of the network QoS parameters and performance. Most of these systems are implemented to measure QoS parameters in links. Here, in this paper, a system for monitoring queues in each link by means of Software Defined Networks is proposed. The monitoring system is implemented by extending Floodlight controller, which uses OpenFlow as southbound protocol. The controller has a centralized view of the network. By the help of OpenFlow it also can provide flow level statistics. Using these advantages, the proposed system can monitor delay and available bandwidth of a queue on a link or path. Despite of monitoring systems in traditional networks, the proposed monitoring system makes a low overhead in network thanks to OpenFlow protocol messages. It is also integrated into the network controller, which enables QoS and trac engineering applications to use the system's reports for automatic trac management and QoS setup. The experimental results show a 99% accuracy of the proposed system for monitoring of both bandwidth and delay.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":"6 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140700952","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: 7

Slotted Patch Antenna with Wide Bandwidth for In-body Biotelemetry Applications 用于体内生物遥测应用的宽带槽式贴片天线

Journal of Telecommunications and Information Technology Pub Date : 2024-04-05 DOI: 10.26636/jtit.2024.2.1412

P. Mishra, Keshav Mathur, V. S. Tripathi

引用次数: 0

Factors Influencing Accuracy of Estimating Position of Objects in a Multi-camera System 影响多摄像头系统中物体位置估计精度的因素

Journal of Telecommunications and Information Technology Pub Date : 2024-04-05 DOI: 10.26636/jtit.2024.2.1457

Krzysztof Klimaszewski, T. Grajek, Krzysztof Wegner

{"title":"Factors Influencing Accuracy of Estimating Position of Objects in a Multi-camera System","authors":"Krzysztof Klimaszewski, T. Grajek, Krzysztof Wegner","doi":"10.26636/jtit.2024.2.1457","DOIUrl":"https://doi.org/10.26636/jtit.2024.2.1457","url":null,"abstract":"Nowadays, research focusing on robotics, autonomous vehicles, and scene analysis shows a clear need for the ability to accurately reconstruct three-dimensional environments. One of the methods allowing to conduct such a reconstruction is to use a set of cameras and image processing techniques. This is a passive method. Despite being, in general, less accurate than its active counterparts, it offers significant advantages in numerous applications in which active systems cannot be deployed due to limited performance. This paper provides a theoretical analysis of the accuracy of estimating 3D positions of objects present at a given scene, based on images from a set of cameras. The analysis assumes a known geometrical configuration of the camera system. The important limiting factor in the considered scenario is the physical resolution of sensors - especially in the case of systems that are supposed to work in real time, with a high FPS rate, as the use of high-resolution cameras is difficult in such circumstances. In the paper, the influence of the geometric arrangement of the cameras is studied and important conclusions about the potential of three-camera configurations are drawn. The analysis performed and the formulas derived help predict the boundary accuracy values of any system using a digital camera. The results of an experiment that confirm the theoretical conclusions are presented as well.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140738760","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: 0

Tight Lower Bound on Differential Entropy for Mixed Gaussian Distributions 混合高斯分布的微分熵的严格下限

Journal of Telecommunications and Information Technology Pub Date : 2024-04-05 DOI: 10.26636/jtit.2024.2.1444

Abdelrahman Marconi, A. H. Elghandour, Ashraf D. Elbayoumy, Amr Abdelaziz

引用次数: 0