Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249364
Goran Antonijević, S. Simic, Dimitrije Bujaković
The content — This paper describes the procedure of application Adaptive Weighted Norm Extrapolation (AWNE) method on stripmap SAR image which was formed using Doppler Beam Sharpening (DBS) algorithm, in order to improve resolution in the azimuth axis. The characteristics of stripmap SAR recording are listed, as well as the causes of poor resolution in the azimuth axis of the DBS algorithm. Before using the AWNE method, the SAR data were modified in the azimuth axis. The result is that the resolution of the signal in the frequency domain is improved, which represents resolution improvement in the azimuth axis of stripmap SAR image.
{"title":"Improving the azimuth resolution of stripmap SAR image using Adaptive Weighted Norm Extrapolation","authors":"Goran Antonijević, S. Simic, Dimitrije Bujaković","doi":"10.1109/TELFOR.2017.8249364","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249364","url":null,"abstract":"The content — This paper describes the procedure of application Adaptive Weighted Norm Extrapolation (AWNE) method on stripmap SAR image which was formed using Doppler Beam Sharpening (DBS) algorithm, in order to improve resolution in the azimuth axis. The characteristics of stripmap SAR recording are listed, as well as the causes of poor resolution in the azimuth axis of the DBS algorithm. Before using the AWNE method, the SAR data were modified in the azimuth axis. The result is that the resolution of the signal in the frequency domain is improved, which represents resolution improvement in the azimuth axis of stripmap SAR image.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133661017","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249470
Bedoor K. AlShebli, Armin Alibasic, W. Woon, D. Svetinovic
Bibliometric techniques are widely used to study the factors leading to successful research, though this is not without its challenges. One notable problem is that academic data is very diverse, and involves complex interactions between many different entities and players. In this paper, a novel framework for analyzing heterogeneous academic data is proposed. While such a framework would have many different applications, this paper focuses on the design of an academic recommendation system, which is one interesting use case for this framework.
{"title":"Kanban-based framework for analysis of heterogeneous academic data","authors":"Bedoor K. AlShebli, Armin Alibasic, W. Woon, D. Svetinovic","doi":"10.1109/TELFOR.2017.8249470","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249470","url":null,"abstract":"Bibliometric techniques are widely used to study the factors leading to successful research, though this is not without its challenges. One notable problem is that academic data is very diverse, and involves complex interactions between many different entities and players. In this paper, a novel framework for analyzing heterogeneous academic data is proposed. While such a framework would have many different applications, this paper focuses on the design of an academic recommendation system, which is one interesting use case for this framework.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124219820","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249304
Duška Čoja, N. Neskovic, A. Neskovic
This paper describes the results of frequency-domain indoor radio channel characterization using vector network analyzer in the 1.7–1.9 GHz frequency band. Channel impulse response estimate was obtained via inverse Fourier transform through repeated measurements of its transfer function. Statistical parameters of radio propagation, namely the channel's power delay profile and cumulative distributions of root mean square delay spread, mean excess delay and coherence bandwidth were evaluated and comparisons with results in literature were drawn.
{"title":"Channel impulse response estimation using vector network analyzer","authors":"Duška Čoja, N. Neskovic, A. Neskovic","doi":"10.1109/TELFOR.2017.8249304","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249304","url":null,"abstract":"This paper describes the results of frequency-domain indoor radio channel characterization using vector network analyzer in the 1.7–1.9 GHz frequency band. Channel impulse response estimate was obtained via inverse Fourier transform through repeated measurements of its transfer function. Statistical parameters of radio propagation, namely the channel's power delay profile and cumulative distributions of root mean square delay spread, mean excess delay and coherence bandwidth were evaluated and comparisons with results in literature were drawn.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124697721","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249460
Kristijan Birtić, M. Vranješ, N. Teslic, Zvonimir Kaprocki
Due to high capacity requirements, raw videos have to be compressed prior storage and transmission. However, compression and transmission processes introduce visible artifacts in video signal. Thus video quality needs to be monitored and evaluated continuously. In this work a new solution that enables the additional offline analysis of detected video artifacts is proposed. The solution is based on Real-time Audio and Video Artifacts Detection Tool (AVADT) and it displays the timeline accompanied by the markers of different artifacts in different moments of video stream. Furthermore, in the proposed solution the reproduction of video segments that contain detected artifacts is enabled. By using the proposed solution, video service providers can perform the extended analysis and check existing trends related to artifact occurrence during video streaming.
{"title":"A tool for displaying and analysis of video artifacts","authors":"Kristijan Birtić, M. Vranješ, N. Teslic, Zvonimir Kaprocki","doi":"10.1109/TELFOR.2017.8249460","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249460","url":null,"abstract":"Due to high capacity requirements, raw videos have to be compressed prior storage and transmission. However, compression and transmission processes introduce visible artifacts in video signal. Thus video quality needs to be monitored and evaluated continuously. In this work a new solution that enables the additional offline analysis of detected video artifacts is proposed. The solution is based on Real-time Audio and Video Artifacts Detection Tool (AVADT) and it displays the timeline accompanied by the markers of different artifacts in different moments of video stream. Furthermore, in the proposed solution the reproduction of video segments that contain detected artifacts is enabled. By using the proposed solution, video service providers can perform the extended analysis and check existing trends related to artifact occurrence during video streaming.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132449244","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249478
M. Popovic, B. Kordic, M. Popovic, I. Basicevic
In this paper we developed the AAC algorithm, which surpasses the limitations of the previouslu developed AC algorithm, and which always finds the transaction schedule without conflicts and with minimal span. Additionally, new AAC algorithm was validated, and its performance was compared with the performance of RR, ETLB, and AC algorithms on a processor with four cores, and on the test loads of various levels of concurrency.
{"title":"Advanced algorithm for scheduling TM transactions with conflict avoidance","authors":"M. Popovic, B. Kordic, M. Popovic, I. Basicevic","doi":"10.1109/TELFOR.2017.8249478","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249478","url":null,"abstract":"In this paper we developed the AAC algorithm, which surpasses the limitations of the previouslu developed AC algorithm, and which always finds the transaction schedule without conflicts and with minimal span. Additionally, new AAC algorithm was validated, and its performance was compared with the performance of RR, ETLB, and AC algorithms on a processor with four cores, and on the test loads of various levels of concurrency.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132227793","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249280
N. Zdravković
This paper studies outage performance of decode-and-forward cooperative wireless networks subject to Nakagami-m multipath fading while set in an industrial environment, which requires low-latency and high reliability. Cooperating nodes communicate applying either a threshold-based or an Automatic Repeat reQuest (ARQ) protocol. Closed-form analytical expressions are derived when the network destination node applies maximal ratio combining, and are further verified through Monte Carlo simulations. The effects of type of protocol used, average signal-to-noise ratio values, network dimension and fading severity is discussed. Based on the presented results, the choice of internode protocol is considered a trade-off between the low-latency requirement and communication with no data loss.
{"title":"Outage analysis of industrial wireless networks: Efficient protocols and trade-offs","authors":"N. Zdravković","doi":"10.1109/TELFOR.2017.8249280","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249280","url":null,"abstract":"This paper studies outage performance of decode-and-forward cooperative wireless networks subject to Nakagami-m multipath fading while set in an industrial environment, which requires low-latency and high reliability. Cooperating nodes communicate applying either a threshold-based or an Automatic Repeat reQuest (ARQ) protocol. Closed-form analytical expressions are derived when the network destination node applies maximal ratio combining, and are further verified through Monte Carlo simulations. The effects of type of protocol used, average signal-to-noise ratio values, network dimension and fading severity is discussed. Based on the presented results, the choice of internode protocol is considered a trade-off between the low-latency requirement and communication with no data loss.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"508 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132235487","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249438
Era Ajdaraga, M. Gusev
There are various ways a computer can detect QRS complexes, all of which depend on two main factors — the algorithm, and the data. In practice, doctors can pinpoint patient's R-peaks in an electrocardiogram by analyzing the complex morphology of the ECG signal; computers accomplish the same by utilizing different QRS detection algorithms. In this paper, we address the data problem to select the sample rate and resolution that obtain the highest accuracy. For this purpose, we conduct experiments to find the impact of the sampling frequency and resolution on the quality of the QRS detection, by several open-source QRS detection algorithms with multiple variations of data representation. The final goal is to recommend the lowest sampling frequency and smallest sampling resolution (bit depth), that will have sufficient data representation to enable high QRS detection accuracy.
{"title":"Analysis of sampling frequency and resolution in ECG signals","authors":"Era Ajdaraga, M. Gusev","doi":"10.1109/TELFOR.2017.8249438","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249438","url":null,"abstract":"There are various ways a computer can detect QRS complexes, all of which depend on two main factors — the algorithm, and the data. In practice, doctors can pinpoint patient's R-peaks in an electrocardiogram by analyzing the complex morphology of the ECG signal; computers accomplish the same by utilizing different QRS detection algorithms. In this paper, we address the data problem to select the sample rate and resolution that obtain the highest accuracy. For this purpose, we conduct experiments to find the impact of the sampling frequency and resolution on the quality of the QRS detection, by several open-source QRS detection algorithms with multiple variations of data representation. The final goal is to recommend the lowest sampling frequency and smallest sampling resolution (bit depth), that will have sufficient data representation to enable high QRS detection accuracy.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130780048","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249442
Lazar Berbakov, Franco Nicolás Tripi, Alberto Cuevas Abad, Javier Vázquez Gómez, Bogdan Pavković
In this paper we present an Android application for collaborative mapping and awareness in emergency situations based on Google Firebase platform. The main purpose of the application is to act as a tool for firefighters and other emergency workers that allow them to visually communicate the situation in the field by collaboratively creating a map and uploading multimedia files. The application was developed using Android framework with Firebase authentication and real-time database that allow secure authentication and real-time capabilities and at the same time significantly shorten the development time.
{"title":"Android application for collaborative mapping in emergency situations","authors":"Lazar Berbakov, Franco Nicolás Tripi, Alberto Cuevas Abad, Javier Vázquez Gómez, Bogdan Pavković","doi":"10.1109/TELFOR.2017.8249442","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249442","url":null,"abstract":"In this paper we present an Android application for collaborative mapping and awareness in emergency situations based on Google Firebase platform. The main purpose of the application is to act as a tool for firefighters and other emergency workers that allow them to visually communicate the situation in the field by collaboratively creating a map and uploading multimedia files. The application was developed using Android framework with Firebase authentication and real-time database that allow secure authentication and real-time capabilities and at the same time significantly shorten the development time.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129870623","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249393
V. Stenin, A. V. Antonyuk, P. Stepanov, Yu. V. Katunin
The translation lookaside buffer is designed on the base of STG DICE cells with transistors which are spaced into two groups together with transistors of the output combinational logic. The elements contain two spaced identical blocks for the resistance to impacts of single nuclear particles compared to elements on 6-transistors memory cells. Basic elements that were used have no upsets of states during simulations at the linear energy transfer on tracks up to 60 MeV×cm2/mg. In combinational logic of the elements of matching and masking short-term noise pulses can occur.
{"title":"Design of the 65-nm CMOS translation lookaside buffer on the hardened elements","authors":"V. Stenin, A. V. Antonyuk, P. Stepanov, Yu. V. Katunin","doi":"10.1109/TELFOR.2017.8249393","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249393","url":null,"abstract":"The translation lookaside buffer is designed on the base of STG DICE cells with transistors which are spaced into two groups together with transistors of the output combinational logic. The elements contain two spaced identical blocks for the resistance to impacts of single nuclear particles compared to elements on 6-transistors memory cells. Basic elements that were used have no upsets of states during simulations at the linear energy transfer on tracks up to 60 MeV×cm2/mg. In combinational logic of the elements of matching and masking short-term noise pulses can occur.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124238668","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}
Pub Date : 2017-11-01DOI: 10.1109/TELFOR.2017.8249462
S. Novak, Dejan Stefanovic, V. Pekovic, Nenad Soskic
The HbbTV 2.0 specification, published in 2015 by the Hybrid Broadcast Broadband TV (HbbTV) Association aims to integrate companion screen devices (mobile devices, tablets, etc) into HbbTV environment. This enables broadcasters to utilize second screen devices in order to show additional content-related information, stream broadcast content or launch and install native applications. In this paper we present an environment and tools used for verifying DIAL functionalities on HbbTV 2.0 compatible devices.
{"title":"Implementation of a sub-system for DIAL verification within HbbTV test environment","authors":"S. Novak, Dejan Stefanovic, V. Pekovic, Nenad Soskic","doi":"10.1109/TELFOR.2017.8249462","DOIUrl":"https://doi.org/10.1109/TELFOR.2017.8249462","url":null,"abstract":"The HbbTV 2.0 specification, published in 2015 by the Hybrid Broadcast Broadband TV (HbbTV) Association aims to integrate companion screen devices (mobile devices, tablets, etc) into HbbTV environment. This enables broadcasters to utilize second screen devices in order to show additional content-related information, stream broadcast content or launch and install native applications. In this paper we present an environment and tools used for verifying DIAL functionalities on HbbTV 2.0 compatible devices.","PeriodicalId":422501,"journal":{"name":"2017 25th Telecommunication Forum (TELFOR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126883623","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}
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