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Model for 5G UDN Positioning System Topology Search Using Dilution of Precision Criterion 基于精度稀释准则的5G UDN定位系统拓扑搜索模型
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614751
G. Fokin, V. Sevidov
{"title":"Model for 5G UDN Positioning System Topology Search Using Dilution of Precision Criterion","authors":"G. Fokin, V. Sevidov","doi":"10.1109/EExPolytech53083.2021.9614751","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614751","url":null,"abstract":"Positioning of User Equipment (UE) in 5G Ultra-Dense Networks (UDN) promises significant improvement in location accuracy estimation due to densification of Access Points (AP) infrastructure. For range and bearing primary measurements network geometry plays a significant role in the resultant positioning accuracy, regardless of time (TOA) and angle (AOA) of arrival secondary processing technique. Existing approaches for positioning system topology search in terrestrial cellular networks utilize geometric dilution of precision (GDOP) minimization under certain conditions, satisfying application requirements. Drawback of existing approaches, yielding tractable analytical results, is that they predominantly have assumption of 2-dimensional (2D) AP distribution according to regular hexagonal grid, square lattice or Poisson point process (PPP). If for previous 2G-4G cellular networks it is justified, for 5G UDN these assumptions do not retain. According to latest 3GPP specifications, enhanced positioning service area should provide sub-meter 3D UE location estimation in horizontal and vertical planes. The contribution of current research is a simulation model for 5G UDN positioning system topology search using well known in Global Navigation Satellite Systems (GNSS) horizontal (HDOP), vertical (VDOP) and position (PDOP) dilution of precision (DOP) criterion. Simulation results reveal, that fixed AP number topology, achieving DOP criterion in horizontal plane, does not provide satisfying DOP in vertical one.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126606825","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 an Electronically Tunable Microstrip Bandpass UHF Filter 电子可调谐微带带通UHF滤波器的设计
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614695
Jacob Berakdar, A. Nikitin, S. V. Tomashevich
{"title":"Design of an Electronically Tunable Microstrip Bandpass UHF Filter","authors":"Jacob Berakdar, A. Nikitin, S. V. Tomashevich","doi":"10.1109/EExPolytech53083.2021.9614695","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614695","url":null,"abstract":"This paper presents the study results of tunable microstrip bandpass filters (BPF) in the decimeter range for various structure types (stepped impedance, combline, and open-loop). The considering central frequency is tuned by using varactors in the range of 1.8 - 2.5 GHz with a 200 MHz bandwidth. The investigated filters are based on hybrid technology using standard commercially available electronic components for surface mounting. The comparative characteristics of the various microstrip tunable filters are presented. The data obtained can allow a rational choice of design for the device to be developed.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116500155","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
Challenges in the Organization of a Wireless Network in Complex Industrial Scenario 复杂工业场景下无线网络组织的挑战
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614808
Kseniya V. Trusova, S. Zavjalov
{"title":"Challenges in the Organization of a Wireless Network in Complex Industrial Scenario","authors":"Kseniya V. Trusova, S. Zavjalov","doi":"10.1109/EExPolytech53083.2021.9614808","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614808","url":null,"abstract":"Rapidly growing wireless technologies expand opportunities of different industries, increasing their productivity. Some particular cases require specific network performances. In this article, several complex industrial scenarios are considered. The iron and steel plants, power plants, hospitals, test and research laboratories have some limits to radio frequency wireless networks implementation. The paper suggests a hybrid solution, combining radio frequency and optical wireless communication technologies. Balancing advantages and disadvantages of the technologies, the flexible solution is able to satisfy the demands of mentioned scenarios. Finally, the article describes challenges of this solution and future research directions.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131097532","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
Iteratively Reweighted ℓ1 Minimization with Nonzero Index Update 具有非零索引更新的迭代重加权最小化
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614871
B. Tausiesakul
{"title":"Iteratively Reweighted ℓ1 Minimization with Nonzero Index Update","authors":"B. Tausiesakul","doi":"10.1109/EExPolytech53083.2021.9614871","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614871","url":null,"abstract":"The acquisition of a discrete-time signal is an important part of compressive sensing. Instead of ℓ0-norm optimization, much attention is paid to ℓ1-norm problem formulation due to its computability at comparable accuracy. Iteratively reweighted ℓ1 (IRL1) minimization is known to be an improved algorithm of typical ℓ1-norm criterion. In this work, an alternative enhancement of the IRL1-norm criterion is presented. The proposed method invokes a descending sort of the absolute values of all elements in the solution and updates the nonzero indices in each iteration without any additional matrix factorization and matrix inverse. Numerical examples illustrate that for a large number of nonzero elements in the data the proposed nonzero index update can help the IRL1 minimization to perform noticeably better.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"362 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132791384","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
Wireless Finger-Piece Sensor for Liver Function Assessment 用于肝功能评估的无线指式传感器
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614820
I. Kolokolnikov, Ilya Lazdin, E. Nepomnyaschaya, E. Velichko
{"title":"Wireless Finger-Piece Sensor for Liver Function Assessment","authors":"I. Kolokolnikov, Ilya Lazdin, E. Nepomnyaschaya, E. Velichko","doi":"10.1109/EExPolytech53083.2021.9614820","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614820","url":null,"abstract":"In modern medicine the contrast colorant clearance test is applied to evaluate liver function. We develop in vivo method for colorant concentration measurement. In previous papers we described a wired infrared sensor, providing full data set of the ICG concentration dynamics measurement to the doctor. Now we present the scheme and results of the wireless device implementation, which can be even lighter and easier to attach to the patient.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114140376","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
Reduction of Higher Harmonics in the Signal Spectrum in Switched Mode Amplifiers Using Predistortions Generated by a Neural Network 利用神经网络产生的预失真降低开关模式放大器信号频谱中的高次谐波
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614857
V. Sorotsky, R. Zudov
{"title":"Reduction of Higher Harmonics in the Signal Spectrum in Switched Mode Amplifiers Using Predistortions Generated by a Neural Network","authors":"V. Sorotsky, R. Zudov","doi":"10.1109/EExPolytech53083.2021.9614857","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614857","url":null,"abstract":"In recent years, there has been a tendency to reduce heat dissipation from various kinds of technical devices including radio transmitters. To reduce heat dissipation in radio transmitters, switched mode power amplifiers (PAs) can be used, the efficiency of which is as high as 95-98%. However, the high level of higher harmonics is a problem of such PAs. To reduce them to the required value, a staged voltage can be used. In this case, attention must be paid to the angle coordinates of the voltage stages. It is shown that even their insignificant deviations caused by different values of the transistor parameters significantly increase the level of higher harmonics. To solve this problem, a predistortion of control pulses should be implemented using a neural network. The results of experiments confirm the possibility to reduce the level of the 2nd, 3rd, 5th and 7th harmonics in a three-stage voltage by 30…40 dB to the required level of minus 60 dB.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"189 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114142320","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: 3
Application of the Goertzel Transducer for Reactive Power Parameters Measurement Goertzel传感器在无功功率参数测量中的应用
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614758
A. Serov, K. A. Ivanenko, D. S. Zolkin
{"title":"Application of the Goertzel Transducer for Reactive Power Parameters Measurement","authors":"A. Serov, K. A. Ivanenko, D. S. Zolkin","doi":"10.1109/EExPolytech53083.2021.9614758","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614758","url":null,"abstract":"At present, for the power quality parameters measurement instruments, it is required to measure the following reactive power parameters: reactive power of individual harmonics, reactive power of the main spectral component and reactive power in a given frequency band. Spectral analysis is effective for measuring all these parameters. In the case of measurement of a small number of harmonics, it seems effective to use the Goertzel transducer for solving this problem. The paper considers the methodological errors in the measurement of reactive power parameters associated with the deviation of the signal frequency from its nominal value. An approach is proposed to reduce the error, based on the adjustment of the number of processed samples to the value of the input signal frequency. Expressions are obtained that make it possible to estimate the measurement errors of all three reactive power parameters. The options for the implementation of the Goertzel transducer for solving the specified problem are considered. A separate implementation option is presented, based on adjusting the number of samples to the frequency value. The influence of the instrumental error components of the voltage and current measurement channels (additive, multiplicative, nonlinearity, quantization) on the measurement errors of the reactive power parameters is considered. A simulation model of the measurement transducer is performed in Matlab/Simulink.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116705179","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
Object Classification Based on Channel State Information Using Feature Spaces 基于通道状态信息的特征空间对象分类
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614818
Maksim A. Lopatin, S. Fyodorov, Dong Ge
{"title":"Object Classification Based on Channel State Information Using Feature Spaces","authors":"Maksim A. Lopatin, S. Fyodorov, Dong Ge","doi":"10.1109/EExPolytech53083.2021.9614818","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614818","url":null,"abstract":"To date, a large amount of research has been carried out on the use of a Wi-Fi signal for positioning or classifying objects using Channel State Information (CSI). This paper explores the classification of metal objects placed between routers at a distance of 1 meter. In the future, this can be used as an additional means of control in narrow door openings. Based on the CSI amplitude values, feature spaces are calculated, which contain concentrated information about the classified objects. Feature spaces plots are shown. The result of the classification of physical Wi-Fi objects using the Random Forest algorithm was 83% using raw amplitude CSI values. Using feature spaces result was 99% with best combination of features.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123943473","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
The Influence of the Magnetic Field Inhomogeneity on the Orientational Light Frequency Shift in Rubidium Clock 磁场不均匀性对铷原子钟中定向光频移的影响
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614780
S. Ermak, V. Semenov
{"title":"The Influence of the Magnetic Field Inhomogeneity on the Orientational Light Frequency Shift in Rubidium Clock","authors":"S. Ermak, V. Semenov","doi":"10.1109/EExPolytech53083.2021.9614780","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614780","url":null,"abstract":"In this work, the influence of the operating magnetic field gradient on the frequency of the 0-0-transition of a lamp-pumped rubidium atomic clock was investigated. As a gas cell, we used a cell with an antirelaxation coating of the walls and containing Rb87 atoms. Experimental dependences of the atomic clock model resonance frequency on the applied magnetic field gradient in the range of 0.003 Oe / cm - 0.012 Oe / cm and in the magnetic fields range of 0.0135 Oe - 0.027 Oe were obtained. The orientation 0-0-resonance frequency shift having value more than value of the frequency shift due to the quadratic magnetic dependence of the 0-0-resonance frequency was measured.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122542586","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
Ion Beam Synthesis of SERS Substrate SERS衬底的离子束合成
2021 International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2021-10-14 DOI: 10.1109/EExPolytech53083.2021.9614915
Akanksha Motla, Sumaya Nisar, V. Baranwal, K. Sharma, B. Sundarawel, Nita Dilawar Shrama, S. Khan, D. Avasthi
{"title":"Ion Beam Synthesis of SERS Substrate","authors":"Akanksha Motla, Sumaya Nisar, V. Baranwal, K. Sharma, B. Sundarawel, Nita Dilawar Shrama, S. Khan, D. Avasthi","doi":"10.1109/EExPolytech53083.2021.9614915","DOIUrl":"https://doi.org/10.1109/EExPolytech53083.2021.9614915","url":null,"abstract":"Surface Enhanced Raman Spectroscopy (SERS) is a powerful tool to amplify weak Raman signals by an increment of the apparent Raman cross-section of the analytes. The present work reports on ion beam synthesized SERS substrates. Thin films of Au were deposited on quartz substrate using ion beam sputtering. The films were further irradiated by 1.36 MeV Xe ions to a fluence of 1015 and 1016 ion/cm2. Rutherford Backscattering (RBS) was performed for Au thin film deposited on quartz to evaluate the Au content. Thickness of the film was found to be -- 7.8nm by RBS. The FESEM was performed for pristine and irradiated samples which revealed the formation of separated distinguishable Au nanoparticles in irradiated samples. The UV-Visible spectroscopy was carried out for pristine and irradiated materials which indicated surface plasmon resonance due to the formation of Au nanoparticles after ion irradiation. The assessment of SERS was performed on High Resolution Raman using 10−4M di-nitro salicylic acid (DNSA) as a model analyte, which has a similar chemical structure to the commonly found explosives. The presence of NO2group and aromatic ring stretching vibration were observed on the irradiated sample which were otherwise not observed on the pristine sample. Hence, this demonstrated ion beam synthesis of SERS substrate.","PeriodicalId":141827,"journal":{"name":"2021 International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132408763","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
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