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2021 29th Telecommunications Forum (TELFOR)最新文献

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An all-optical perceptron for binary classification 二值分类的全光感知器
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653169
Isidora Teofilović, J. Crnjanski, M. Banovic, M. Krstić, D. Gvozdić
{"title":"An all-optical perceptron for binary classification","authors":"Isidora Teofilović, J. Crnjanski, M. Banovic, M. Krstić, D. Gvozdić","doi":"10.1109/TELFOR52709.2021.9653169","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653169","url":null,"abstract":"We present an all-optical perceptron that utilizes an injection-locked Fabry-Perot laser diode as an adaptive activation unit. The evaluation of the proposed neuron was performed theoretically on the problem of binary classification of pairs of hand-written digits. Results for the MNIST dataset reveal an average accuracy of over 97% for activation function profile tailored by adjusting the laser diode bias current.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126609121","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
At-home biofeedback therapy with wearable sensor and smartphone application: proof of concept 可穿戴传感器和智能手机应用的家庭生物反馈疗法:概念验证
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653388
Alma Secerbegovic, Mustafa Spahic, Amir Hasanbasic, Haris Hadzic, Vedad Mesic, Amera Sinanovic
{"title":"At-home biofeedback therapy with wearable sensor and smartphone application: proof of concept","authors":"Alma Secerbegovic, Mustafa Spahic, Amir Hasanbasic, Haris Hadzic, Vedad Mesic, Amera Sinanovic","doi":"10.1109/TELFOR52709.2021.9653388","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653388","url":null,"abstract":"Wearable devices and smartphone applications have allowed for the utilization of different at-home treatments. Biofeedback is a mind-body technique that enables users to self-regulate the responses of the autonomic nervous system. This paper has conducted a proof-of-concept study to test multimodal biofeedback treatment with smartphone application and custom-made wearable sensor. While contact-based measurements included skin temperature and skin conductance from the sensor, the smartphone's front camera recorded the patient's face to estimate cardiovascular parameters such as heart rate and heart rate variability. The tested individual completed five biofeedback treatments at home, with activation stress exercises before and after a 5-day experiment. The obtained results show increased finger's skin temperature and heart rate variability during biofeedback sessions, indicating the successful biofeedback treatment.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124901328","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
Analysis of a software based hardware composer adaptation 一种基于软件的硬件编曲改编分析
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653258
Dejan Bogosavljev, M. Popovic, Dejan Bogdanović
{"title":"Analysis of a software based hardware composer adaptation","authors":"Dejan Bogosavljev, M. Popovic, Dejan Bogdanović","doi":"10.1109/TELFOR52709.2021.9653258","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653258","url":null,"abstract":"The Android operating system uses the hardware composer module to write visual outputs to buffers that will be shown on the screen. The module is device-specific, meaning that it is up to the device vendors to implement the functionality. The hardware composer is usually implemented to support hardware rendering, which provides a performance boost, but it makes the implementation dependent on graphics drivers. These dependencies limit the number of devices that can use certain implementations because they may lack the access to required drivers, or the drivers may have differences in the case of open source ones. Software rendering can be used to eliminate these problems and grant portability at the expense of performance. Hardware composers that use software rendering are convenient for Android systems running inside a virtual environment such as a Linux container, because they grant them independence from the host hardware. This paper will analyze the modifications made to an open source, hardware dependent implementation of a hardware composer to use software rendering, and thus be able to run on any platform that can support a Wayland graphics environment.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134044567","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
Circuit Design of CJFET OPA Based on the Differential Stage with a Slope Multiplier 基于斜率乘法器差分级的CJFET OPA电路设计
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653418
N. N. Prokopenko, V. Chumakov, I. Pakhomov, A. Bugakova, R. Khubiev, A. Avilov
{"title":"Circuit Design of CJFET OPA Based on the Differential Stage with a Slope Multiplier","authors":"N. N. Prokopenko, V. Chumakov, I. Pakhomov, A. Bugakova, R. Khubiev, A. Avilov","doi":"10.1109/TELFOR52709.2021.9653418","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653418","url":null,"abstract":"The paper proposes the differential stage (DS) scheme based on field-effect transistors with a control pn-junction (JFET), which has an increased gain slope when the JFET operates in microcurrent mode. Examples of its practical use in the structure of a low-temperature operational amplifier (OPA) are given. The results of computer simulation in the LTSpice XVII environment are presented, which show that the proposed circuitry techniques for constructing JFET DSs provide an increase in the value of the open-loop gain OPA (up to 120÷135 dB) in a wide temperature range (from 27°C to −197°C) and low values of the systematic component of the zero offset voltage (less than 180 µV). The considered OPA structures can be used due to their implementation on JFET in low-noise analog interfaces for processing sensor signals in automation devices operating in harsh operating conditions.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132174536","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
Research of Genetic Optimization Algorithms in the Design of VLAN 遗传优化算法在VLAN设计中的研究
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653295
D. Parfenov, L. Grishina, A. Zhigalov, I. Bolodurina
{"title":"Research of Genetic Optimization Algorithms in the Design of VLAN","authors":"D. Parfenov, L. Grishina, A. Zhigalov, I. Bolodurina","doi":"10.1109/TELFOR52709.2021.9653295","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653295","url":null,"abstract":"Currently, one of the promising ways to solve the problem of effective management of access rights to network elements and, as a result, improving the efficiency and security of local area networks is the use of VLAN technology. However, when designing a VLAN, there is a problem of optimizing the access permission scheme to network resources, which role-based access control allows you to solve. Within the framework of this work, the application of genetic optimization algorithms is considered and various modifications of the main stages of the algorithm are studied when solving the problem of optimizing the VLAN access scheme based on a role-based approach. The solution of the problem found by selection by the roulette wheel method, mutation by the method with the removal of bonds and crossing with the number of break points k equal to 3 in the genetic algorithm has the lowest value of the fitness-function among all the solutions found at various stages of the study.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115979552","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
120GHz Schottky Terahertz Transceivers with Graphene FET Sub-Harmonic Mixers 120GHz肖特基太赫兹收发器与石墨烯FET次谐波混频器
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653328
Surafel Berhanu Abegaz, F. M. Yigletu, E. Bekele
{"title":"120GHz Schottky Terahertz Transceivers with Graphene FET Sub-Harmonic Mixers","authors":"Surafel Berhanu Abegaz, F. M. Yigletu, E. Bekele","doi":"10.1109/TELFOR52709.2021.9653328","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653328","url":null,"abstract":"THz communication is seen as a technology for beyond 5G wireless with both photonic and electronic approaches. Schottky diode multiplied microwave sources present a lower cost than the photonic approach but there is a tradeoff in phase noise and higher frequencies. Furthermore Graphene Field Effect Transistor (GFET) subharmonic mixers show promise for application with Schottky Barrier Diode (SBD) multipliers; however, the performance is highly dependant on the synthesis method. 120GHz double conversion transceivers were designed with Chemical Vapor Depositon (CVD) and electrochemical graphene (ECG) and evaluated in a simulation environment. 20Gbps was achieved with 16 Quadrature Amplitude Modulation (QAM) with an Error Vector Magnitude of 31.6% and 28.6% for ECG and CVD, respectively. ECG was shown to be a viable synthesis method for low cost THz front ends. In addition, the frequency range of less than 375GHz was found to be suitable when employing phase modulation with Schottky multiplied sources.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116293198","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
Analiza mogućnosti primene Bajesovog algoritma lokalizacije sa dinamičkim izborom nodova u BSM
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653327
Kristina M. Josifović, Tamara V. Palančanin, Srđan D. Misailović, Goran B. Marković
{"title":"Analiza mogućnosti primene Bajesovog algoritma lokalizacije sa dinamičkim izborom nodova u BSM","authors":"Kristina M. Josifović, Tamara V. Palančanin, Srđan D. Misailović, Goran B. Marković","doi":"10.1109/TELFOR52709.2021.9653327","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653327","url":null,"abstract":"Postoji sve veći broj primena bežičnih senzorskih mreža (BSM) koje zahtevaju poznavanje lokacije senzorskih čvorova. Osim poznavanja lokacije senzorskih čvorova, nekada je veoma bitno utvrditi i lokaciju izvora neke pojave (događaja) koju ovi čvorovi detektuju. Predložen je veliki broj tehnika za procenu lokacije (lokalizaciju) događaja, ipak, i dalje postoje značajni izazovi u pogledu ostvarenja energetske efikasnosti mreže uz postizanje dovoljne tačnosti određivanja lokacije, uz dodatne zahteve u smislu male cene implementacije. U radu je data analiza mogućnosti primene postupka lokalizacije koji se zasniva na iterativnom Bajesovom probabilističkom algoritmu za lokalizaciju radio predajnika čija je lokacija nepoznata, uz dinamički izbor čvorova BSM koji se koriste za lokalizaciju. Osnovni rezultat analize predstavljaju zaključci o uspešnosti i primenjivosti postojećeg postupka lokalizacije u posmatranom scenariju primene u BSM, kao i predlozi za unapređenje i optimizaciju postupka za posmatrani scenario primene u BSM.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115423506","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
Optimum input sequence size for a sliding window-based LSTM neural network used in short-term electrical load forecasting 基于滑动窗口的LSTM神经网络短期负荷预测的最优输入序列大小
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653206
V. Urosevic, Sonja Dimitrijević
{"title":"Optimum input sequence size for a sliding window-based LSTM neural network used in short-term electrical load forecasting","authors":"V. Urosevic, Sonja Dimitrijević","doi":"10.1109/TELFOR52709.2021.9653206","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653206","url":null,"abstract":"Proper input sequence size selection has a major impact on the accuracy of short-term electrical load forecasting when using recurrent deep Long Short-Term Memory (LSTM) neural networks. A sliding window approach is frequently used for segmenting input data in models of this type. This paper aims to investigate several input sequence sizes in the given context assuming that the best result will coincide with a high value of the autocorrelation function. Therefore, a certain number of input sequence sizes was first determined using autocorrelation analysis. 5 datasets were formed based on historical data on electricity consumption for 5 randomly selected European countries. Observations were monitored on an hourly basis. For each dataset, after model training, an evaluation of the test data set was performed. Patterns identified by the autocorrelation function were recognized by the recurrent LSTM. It was shown that the most accurate result coincides with a point that has a high value of the autocorrelation function. More specifically, the best result was obtained for the size of the input sequence of 168 hours.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121644660","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
Semantic Similarity and Sentiment Analysis of Short Texts in Serbian 塞尔维亚语短文本语义相似度与情感分析
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653390
Vuk Batanović
{"title":"Semantic Similarity and Sentiment Analysis of Short Texts in Serbian","authors":"Vuk Batanović","doi":"10.1109/TELFOR52709.2021.9653390","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653390","url":null,"abstract":"This paper presents an overview of the open access datasets in Serbian that have been manually annotated for the tasks of semantic textual similarity and short-text sentiment classification. In addition, it describes several kinds of statistical models that have been trained and evaluated on these datasets and discusses their results.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125374599","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
Comparison of two Android audio bridging approaches inside Linux containers Linux容器内两种Android音频桥接方法的比较
2021 29th Telecommunications Forum (TELFOR) Pub Date : 2021-11-23 DOI: 10.1109/TELFOR52709.2021.9653336
Dušan Mačkić, V. Marinkovic, Dario Perić
{"title":"Comparison of two Android audio bridging approaches inside Linux containers","authors":"Dušan Mačkić, V. Marinkovic, Dario Perić","doi":"10.1109/TELFOR52709.2021.9653336","DOIUrl":"https://doi.org/10.1109/TELFOR52709.2021.9653336","url":null,"abstract":"For a long time, containers have been a prominent approach present both in software development and in running multiple environments on the same hardware. The container represents a lightweight and fast environment. However, its security aspects are still subject to improvement. Though the concept of unprivileged container is intended for secure operations, mounting devices, and providing direct access to those devices in a container is not the secure solution. Thus, moving the access to audio devices to the host gives opportunities for improved security in LXC unprivileged container. This paper is taking advantage of UNIX sockets client-server communication, which is generally secure when combined with POSIX permissions used to lock down the access to the file descriptor associated with the socket. The analysis of the proposed solution is given including the elaboration of the Android audio signal latency, measured at different audio levels.","PeriodicalId":330449,"journal":{"name":"2021 29th Telecommunications Forum (TELFOR)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122333058","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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