Proceedings of Telecommunication Universities最新文献_第9页

Correlation Properties Investigation of Signaling Sequences to Optimize the 5G NR Random Access Channel Characteristics 优化5G NR随机接入信道特性的信令序列相关性研究

Proceedings of Telecommunication Universities Pub Date : 2023-01-10 DOI: 10.31854/1813-324x-2022-8-4-100-108

I. Babanov

引用次数: 0

Models of Blockchain Application in Government Information Systems 区块链在政府信息系统中的应用模式

Proceedings of Telecommunication Universities Pub Date : 2023-01-10 DOI: 10.31854/1813-324x-2022-8-4-65-73

V. Elagin

引用次数: 0

Deep Learning Approaches for Traffic Prediction Forecasting in Multi-Level Cloud Architecture for Autonomous Vehicle Services 面向自动驾驶汽车服务的多层次云架构交通预测的深度学习方法

Proceedings of Telecommunication Universities Pub Date : 2023-01-10 DOI: 10.31854/1813-324x-2022-8-4-89-99

M. Alsweity

{"title":"Deep Learning Approaches for Traffic Prediction Forecasting in Multi-Level Cloud Architecture for Autonomous Vehicle Services","authors":"M. Alsweity","doi":"10.31854/1813-324x-2022-8-4-89-99","DOIUrl":"https://doi.org/10.31854/1813-324x-2022-8-4-89-99","url":null,"abstract":"Autonomous vehicle (AV) is one of the most new use cases and a technology for fifth-generation (5G) and next-generation mobile networks in numerous applications., the use of AVs has exponentially worldwide due to the rapidly growing awareness and use of artificial intelligence (AI) methods in various fields. Predicting data flows is essential for AVs to improve data transmission and decrease delays through more efficient use of appropriate capabilities, monitoring, management, and control of the traffic system. This paper proposes a deep learning approach (DL) with the bidirectional long-short-term memory model (BI-LSTM) for predicting the traffic rates of AVs with multi-cloud services. In terms of prediction accuracy, a comparison is conducted between the BI-LSTM and the unidirectional LSTM based on the number of batch sizes used. The prediction accuracy is computed using the root mean square error (RMSE), mean absolute percentage error (MAPE), coefficient of determination (R2), and processing time. The results show that the prediction accuracy with BI-LSTM outperforms the LSTM model. Besides, the prediction accuracy using 8 batch sizes outperforms the competitors and offers outstanding performance.","PeriodicalId":298883,"journal":{"name":"Proceedings of Telecommunication Universities","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128322143","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

Direct Sequence Spread Spectrum Signal’s Demodulator Acquisition Implementation Based on Fast Fourier Transform. Part 1. Problem Statement and Solution Approach 基于快速傅立叶变换的直接序列扩频信号解调采集实现。第1部分。问题陈述和解决方法

Proceedings of Telecommunication Universities Pub Date : 2023-01-10 DOI: 10.31854/1813-324x-2022-8-4-21-27

E. Brusin

引用次数: 0

Application of a Virtual Magnetic Dipoles in Antenna Array to Increase the Direction Finding Accuracy 虚拟磁偶极子在天线阵中的应用以提高测向精度

Proceedings of Telecommunication Universities Pub Date : 2023-01-10 DOI: 10.31854/1813-324x-2022-8-4-39-47

E. Ishchenko, Y. Pasternak, V. Pendyurin, S. Fedorov

引用次数: 0

Interrelation of Symmetry and Antisymmetry of Quasi-Orthogonal Cyclic Matrices with Prime Numbers 素数拟正交循环矩阵的对称与反对称关系

Proceedings of Telecommunication Universities Pub Date : 2023-01-05 DOI: 10.31854/1813-324x-2022-8-4-14-19

A. Sergeev

{"title":"Interrelation of Symmetry and Antisymmetry of Quasi-Orthogonal Cyclic Matrices with Prime Numbers","authors":"A. Sergeev","doi":"10.31854/1813-324x-2022-8-4-14-19","DOIUrl":"https://doi.org/10.31854/1813-324x-2022-8-4-14-19","url":null,"abstract":"Quasi-orthogonal Hadamard matrices and Mersenne matrices with two and three values of the elements, used in digital data processing, are considered, as well as the basis of error-correcting codes and algorithms for transforming orthogonal images. Attention is paid to the structures of cyclic matrices with symmetries and antisymmetries. The connection between symmetry and antisymmetry of structures of cyclic Hadamard and Mersenne matrices on a orders equal to prime numbers, products of close primes, composite numbers, powers of a prime number is shown. Separately, orders equal to the degrees of the prime number 2 are distinguished, both the orders of Hadamard matrices and the basis of the composite orders of Mersenne matrices of block structures with two element values. It is shown that symmetric Hadamard matrices of cyclic and bicyclic structures, according to the extended Riser boundary, do not exist on orders above 32. Mersenne matrices of composite orders belonging to the sequence of Mersenne numbers 2k ‒ 1 nested in the sequence of orders of the main family of Mersenne matrices 4t ‒ 1 exist in a symmetric and antisymmetric form. For orders equal to the powers of a prime number, Mersenne matrices exist in the form of block-diagonal constructions with three element values. The value of prime power determines the number of blocks along the diagonal of the matrix on which the elements with the third value are located. The cyclic blocks are symmetrical and antisymmetric.","PeriodicalId":298883,"journal":{"name":"Proceedings of Telecommunication Universities","volume":"272 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133454205","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

Method for Calculating the Radius of an Electromagnetic Availability Zone based on a Surface Wave Source with a Given Spectrum Density of an Isotropically Emitted Signal 基于给定各向同性发射信号频谱密度的表面波源计算电磁可用区半径的方法

Proceedings of Telecommunication Universities Pub Date : 2022-10-06 DOI: 10.31854/1813-324x-2022-8-3-72-79

O. Popov, A. Tumashov, G. Borisov, K. Korovin

{"title":"Method for Calculating the Radius of an Electromagnetic Availability Zone based on a Surface Wave Source with a Given Spectrum Density of an Isotropically Emitted Signal","authors":"O. Popov, A. Tumashov, G. Borisov, K. Korovin","doi":"10.31854/1813-324x-2022-8-3-72-79","DOIUrl":"https://doi.org/10.31854/1813-324x-2022-8-3-72-79","url":null,"abstract":"Thematic justification. When planning HF radio communication using surface waves, it is necessary to determine the signal-to-noise ratio at the inputs of each radio link receiver. Given a sufficiently high ratio, a conclusion can be drawn concerning the effective functionality of the analyzed radio link in a radio communication system. The planning process will be significantly simplified if the radius of the electromagnetic availability zone (REAZ) can be defined for surface waves at each radio station. Thus, the task of developing a methodology for engineering calculation of REAZ is relevant and practically important. Goal. To develop an estimating technique for engineering calculations of a REAZ based on a surface wave source with a given isotropically emitted signal spectrum density. Results. A technique for calculation of the radius of the electromagnetic accessibility zone was developed. A general approach for determining the limiting length of radio links of surface waves is proposed, based on the introduced \"technical factor of a radio link\" concept. Practical implications. Nomograms for determining the radius of an electromagnetic accessibility zone were constructed. The dependence of the maximum temperature of external noise on frequency in the HF range can be approximated using an analytical expression. The developed frequency dependence of the temperature coefficient of the input of an ShT4N81 antenna is presented in a graphical form. The feasibility of using the proposed technique for solving practical problems is demonstrated on the example of calculating the radius of the electromagnetic accessibility zone of a TTR-2101M radio station for a monopulse direction finder with a ring antenna array consisting of eight elements of the ShT4N81 type.","PeriodicalId":298883,"journal":{"name":"Proceedings of Telecommunication Universities","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123848251","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

Methods for Adaptive Resource Availability Management of Geoinformation Systems under Destructive Impacts 破坏性影响下地理信息系统自适应资源可用性管理方法

Proceedings of Telecommunication Universities Pub Date : 2022-10-06 DOI: 10.31854/1813-324x-2022-8-3-101-116

V. Gryzunov

引用次数: 0

Simulation Model of 5G NR Network Positioning Technology with Meter Accuracy. Part 2. PRS Signals Processing 5G NR网络仪表精度定位技术仿真模型。第2部分。PRS信号处理

Proceedings of Telecommunication Universities Pub Date : 2022-10-06 DOI: 10.31854/1813-324x-2022-8-3-80-99

G. Fokin

引用次数: 1

Design of Antenna Fields for HF Band Transmitting Radio Centers Based on Ultra-Wide-Band Antenna Systems 基于超宽带天线系统的高频发射中心天线场设计

Proceedings of Telecommunication Universities Pub Date : 2022-10-06 DOI: 10.31854/1813-324x-2022-8-3-57-71

V. Pashkevich, V. Golubev, M. Protsenko, M. Yurkov, P. Proshin, V. Patyak, A. Anohin

{"title":"Design of Antenna Fields for HF Band Transmitting Radio Centers Based on Ultra-Wide-Band Antenna Systems","authors":"V. Pashkevich, V. Golubev, M. Protsenko, M. Yurkov, P. Proshin, V. Patyak, A. Anohin","doi":"10.31854/1813-324x-2022-8-3-57-71","DOIUrl":"https://doi.org/10.31854/1813-324x-2022-8-3-57-71","url":null,"abstract":"The current technical condition of antenna fields used in short-wave stationary transmitting radio centers is considered. The basic requirements for antenna systems used in radio centers to allow effective operation on routes having a length of 100‒5000 km are formulated. Models for the most common types of HF-band antenna systems constructed using electrodynamic modeling methods, which include logoperiodic, rhombic horizontal double, symmetrical horizontal vibrator, are described together with their energy and non-energy characteristics. Designs for a modified version of an ultra-wide-band logoperiodic structure and active phased array operating in the frequency range of 2–30 MHz are presented. Energy and non-energy parameters of existing and modified antenna systems proposed for replacement are compared. Presented results of track tests using existing and prospective antenna systems operating on a real object include an assessment of the effectiveness of each system on an average-length radio track (2100 km). The developed approach to constructing a high-frequency path of a transmitting radio center using ultra-wide-band pyramidal curved logoperiodic and pin antennas is based on calculated and experimentally obtained results. Active phased antenna arrays with controlled directional patterns developed on their basis are presented along with an appropriate antenna field layout variant.","PeriodicalId":298883,"journal":{"name":"Proceedings of Telecommunication Universities","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125125542","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