Journal of Telecommunications and Information Technology最新文献

High-isolation Quad-port MIMO Antenna for 5G Applications 面向 5G 应用的高隔离四端口 MIMO 天线

Journal of Telecommunications and Information Technology Pub Date : 2024-08-08 DOI: 10.26636/jtit.2024.3.1582

Noor Haider Saeed, Malik Jasim Farhan, Qasim Hadi Kareem

引用次数: 0

A Generalized Learning Approach to Deep Neural Networks 深度神经网络的广义学习方法

Journal of Telecommunications and Information Technology Pub Date : 2024-07-17 DOI: 10.26636/jtit.2024.3.1454

F. Ponti, Fabrizio Frezza, P. Simeoni, Raffaele Parisi

{"title":"A Generalized Learning Approach to Deep Neural Networks","authors":"F. Ponti, Fabrizio Frezza, P. Simeoni, Raffaele Parisi","doi":"10.26636/jtit.2024.3.1454","DOIUrl":"https://doi.org/10.26636/jtit.2024.3.1454","url":null,"abstract":"Optimization of machine learning architectures is essential in determining the efficacy and the applicability of any neural architecture to real world problems. In this work a generalized Newton's method (GNM) is presented as a powerful approach to learning in deep neural networks (DNN). This technique was compared to two popular approaches, namely the stochastic gradient descent (SGD) and the Adam algorithm, in two popular classification tasks. The performance of the proposed approach confirmed it as an attractive alternative to state-of-the-art first order solutions. Due to the good results presented in the case of shallow DNN, in the last part of the article an hybrid optimization method is presented. This method consists in combining two optimization algorithms, i.e. GNM and Adam or GNM and SGD, during the training phase within the layers of the neural network. This configuration aims to benefit from the strengths of both first- and second-order algorithms. In this case a convolutional neural network is considered and its parameters are updated with a different optimization algorithm. Also in this case, the hybrid approach returns the best performance with respect to the first order algorithms.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":" 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141830987","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

Increasing Parallelism in Forward-backward Distributed Algorithm for Finding Strongly Connected Components of Directed Graphs 提高查找有向图强连接组件的前向后向分布式算法的并行性

Journal of Telecommunications and Information Technology Pub Date : 2024-07-11 DOI: 10.26636/jtit.2024.3.1693

Dominik Ryżko

引用次数: 0

Analyzing Performance of THz Band Graphene-Based MIMO Antenna for 6G Applications 分析太赫兹波段石墨烯 MIMO 天线在 6G 应用中的性能

Journal of Telecommunications and Information Technology Pub Date : 2024-07-07 DOI: 10.26636/jtit.2024.3.1518

Noor S. Asaad, Adham M. Saleh, Mahmod A. Alzubaidy

引用次数: 0

Multiprobe Planar Near-field Range Antenna Measurement System with Improved Performance 性能更佳的多探头平面近场测距天线测量系统

Journal of Telecommunications and Information Technology Pub Date : 2024-07-02 DOI: 10.26636/jtit.2024.3.1624

Samvel Antonyan, Hovhannes Gomtsyan

引用次数: 0

Performance Analysis of Antenna-relay Selection in CNOMA Systems under Practical Impairments 实际障碍条件下 CNOMA 系统中天线-中继选择的性能分析

Journal of Telecommunications and Information Technology Pub Date : 2024-07-02 DOI: 10.26636/jtit.2024.3.1589

Menaa Saber, Khelil Abdellatif

{"title":"Performance Analysis of Antenna-relay Selection in CNOMA Systems under Practical Impairments","authors":"Menaa Saber, Khelil Abdellatif","doi":"10.26636/jtit.2024.3.1589","DOIUrl":"https://doi.org/10.26636/jtit.2024.3.1589","url":null,"abstract":"Selection strategies prove to be a valuable approach in mitigating complexity associated with antenna selection (AS) and relay selection (RS), optimizing signal transmission through a streamlined number of antennas/relays, and enhancing overall system performance. This paper offers a comprehensive analysis, deriving closed-form expressions for the outage probability (OP) and throughput in proposed scenarios that leverage the best relay selection (BRS) and transmit antenna selection (TAS) protocol for cooperative non-orthogonal multiple access (CNOMA), along with partial relay selection (PRS) and TAS protocol for CNOMA. The study extends to Rayleigh fading channels, considering practical impairments such as successful interference cancellation (SIC) error, channel estimation error (CEE), and feedback delay error. In comparing the proposed system to conventional CNOMA, our findings highlight the substantial impact of SIC, CEE, and feedback delay imperfections on the performance of both proposed scenarios. Notably, the application of BRS-based TAS protocol outperforms PRS-based TAS in terms of OP and throughput. The close alignment between analytical, asymptotic, and simulation results attests to the credibility of conducted analysis.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":"52 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141687502","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

Testing Time Optimization Method for IEEE 802.15.4z Ultra-wideband Integrated Circuits IEEE 802.15.4z 超宽带集成电路测试时间优化方法

Journal of Telecommunications and Information Technology Pub Date : 2024-07-02 DOI: 10.26636/jtit.2024.3.1623

Grigor Tsaturyan, Hovhannes Gomtsyan

{"title":"Testing Time Optimization Method for IEEE 802.15.4z Ultra-wideband Integrated Circuits","authors":"Grigor Tsaturyan, Hovhannes Gomtsyan","doi":"10.26636/jtit.2024.3.1623","DOIUrl":"https://doi.org/10.26636/jtit.2024.3.1623","url":null,"abstract":"IEEE 802.15.4z-compliant ultra-wideband (UWB) devices are becoming ever more popular in contemporary radio engineering systems. Such systems are capable of precisely measuring distances (with their accuracy expressed in centimeters), are immune to interference, offer low latency and transmit data in an energy-efficient manner. Widespread adoption of UWB technology has triggered significant demand for testing integrated circuits these systems rely on, prompting the development of new testing methods to meet the ever increasing requirements in terms of testing speed and reliability. The same applies to sensitivity tests, in the course of which up to 2000 different packets may be received. The process of generating and analyzing such a large number of packets is time consuming. Furthermore, if multiple devices need to be tested simultaneously, the duration of the test will be multiplied accordingly. In such a context, the article investigates the lead time required to generate 2000 UWB packets using conventional methods and proposes a novel approach to significantly reduce packet generation time and improve testing efficiency.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":"19 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141685949","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

Exact Analysis of MIMO Channel Estimation Based on Superimposed Training 基于叠加训练的 MIMO 信道估计的精确分析

Journal of Telecommunications and Information Technology Pub Date : 2024-06-12 DOI: 10.26636/jtit.2024.2.1557

M. Addad, Hanane Meriem Toaba, A. Djebbari

引用次数: 0

Quantum-Resistant Forward-Secure Digital Signature Scheme Based on q-ary Lattices 基于 q-ary 格的量子抗性前向安全数字签名方案

Journal of Telecommunications and Information Technology Pub Date : 2024-06-10 DOI: 10.26636/jtit.2024.2.1581

Mariusz Jurkiewicz

{"title":"Quantum-Resistant Forward-Secure Digital Signature Scheme Based on q-ary Lattices","authors":"Mariusz Jurkiewicz","doi":"10.26636/jtit.2024.2.1581","DOIUrl":"https://doi.org/10.26636/jtit.2024.2.1581","url":null,"abstract":"In this paper, we design and consider a new digital signature scheme with an evolving secret key, using random q-ary lattices as its domain. It is proved that, in addition to offering classic eu-cma security, the scheme is existentially forward unforgeable under an adaptive chosen message attack (fu-cma). We also prove that the secret keys are updated without revealing anything about any of the keys from the prior periods. Therefore, we design a polynomial-time reduction and use it to show that the ability to create a forgery leads to a feasible method of solving the well-known small integer solution (SIS) problem. Since the security of the scheme is based on computational hardness of a SIS problem, it turns out to be resistant to both classic and quantum methods. In addition, the scheme is based on the \"Fiat-Shamir with aborts\" approach that foils a transcript attack. As for the key-updating mechanism, it is based on selected properties of binary trees, with the number of leaves being the same as the number of time periods in the scheme. Forward security is gained under the assumption that one out of two hash functions is modeled as a random oracle.","PeriodicalId":38425,"journal":{"name":"Journal of Telecommunications and Information Technology","volume":" 33","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141366095","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

Transmission of 10 Gbps C-band-signal-based Radio Over Fiber for Next Generation Communication Systems 基于 10 Gbps C 波段信号的光纤无线电传输，用于下一代通信系统

Journal of Telecommunications and Information Technology Pub Date : 2024-06-10 DOI: 10.26636/jtit.2024.2.1588

Hasan k. Al Deen, Haider J. Abd

引用次数: 0