Pub Date : 2017-08-01DOI: 10.1109/INTERCON.2017.8079714
C. C. C. dos Santos, J. Ortiz, Jônatas P. Américo, K. S. C. Linares
Magnetic materials are broadly use in electrical engineering applications, due to its high permeability that allows increasing magnetic flux. Analyzing systems containing these magnetic cores is complex due to the nonlinear behavior of the magnetic material. This nonlinear behavior can be represented by the magnetization curve and by the hysteresis phenomenon curve. In this work, only magnetization curve is modelled and shows flow variations by varying the magnetic field. For higher values of magnetic field, there is not a present considerable variation of magnetic flux. At this stage, the magnetic material or the core reaches its saturation. In this work, simple mathematical models represent nonlinear behavior of magnetic material in order to be used in circuit simulation and inductor design. Linearized, polynomial and hyperbolic models are used. The linearized model approaches experimental BH curve for linear segments. The polynomial model approaches the curve by polynomial equation and the hyperbolic model approaches the curve using a hyperbolic equation. For models implementation is needed the experimental BH curve. An RL circuit is used. Equations of the electric circuit, magnetic flux and the material model are coupled and solved. To validate, simulation and experimental voltage and current are compared.
{"title":"Nonlinear modeling of magnetic materials for electromagnetic devices simulation","authors":"C. C. C. dos Santos, J. Ortiz, Jônatas P. Américo, K. S. C. Linares","doi":"10.1109/INTERCON.2017.8079714","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079714","url":null,"abstract":"Magnetic materials are broadly use in electrical engineering applications, due to its high permeability that allows increasing magnetic flux. Analyzing systems containing these magnetic cores is complex due to the nonlinear behavior of the magnetic material. This nonlinear behavior can be represented by the magnetization curve and by the hysteresis phenomenon curve. In this work, only magnetization curve is modelled and shows flow variations by varying the magnetic field. For higher values of magnetic field, there is not a present considerable variation of magnetic flux. At this stage, the magnetic material or the core reaches its saturation. In this work, simple mathematical models represent nonlinear behavior of magnetic material in order to be used in circuit simulation and inductor design. Linearized, polynomial and hyperbolic models are used. The linearized model approaches experimental BH curve for linear segments. The polynomial model approaches the curve by polynomial equation and the hyperbolic model approaches the curve using a hyperbolic equation. For models implementation is needed the experimental BH curve. An RL circuit is used. Equations of the electric circuit, magnetic flux and the material model are coupled and solved. To validate, simulation and experimental voltage and current are compared.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114253700","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079706
P. E. Vintimilla-Tapia, J. Bravo-Torres, Pablo L. Gallegos-Segovia, E. F. Ordóñez-Morales, M. López-Nores, Y. Blanco-Fernández
Internet, combined with the technologies of communication and information (ICT), is changing the society. Most aspects of the life of each individual have been influenced by this technological revolution. Education is not indifferent to this reality, since a number of tools and applications have been created which seek to improve the learning process. However, these educational technologies do not adapt to the way each student likes to learn. To solve this problem, this paper implements OPPIA, a multi-model educational platform, which offers three models: self-learning, tutoring learning and collaborative learning. Each student can choose the way they want to learn to obtain learning resources that reinforce their knowledge. At the end, he/she makes an assessment, which corroborates if the necessary knowledge about a certain subject was obtained.
{"title":"OPPIA: A multi-model platform for e-learning","authors":"P. E. Vintimilla-Tapia, J. Bravo-Torres, Pablo L. Gallegos-Segovia, E. F. Ordóñez-Morales, M. López-Nores, Y. Blanco-Fernández","doi":"10.1109/INTERCON.2017.8079706","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079706","url":null,"abstract":"Internet, combined with the technologies of communication and information (ICT), is changing the society. Most aspects of the life of each individual have been influenced by this technological revolution. Education is not indifferent to this reality, since a number of tools and applications have been created which seek to improve the learning process. However, these educational technologies do not adapt to the way each student likes to learn. To solve this problem, this paper implements OPPIA, a multi-model educational platform, which offers three models: self-learning, tutoring learning and collaborative learning. Each student can choose the way they want to learn to obtain learning resources that reinforce their knowledge. At the end, he/she makes an assessment, which corroborates if the necessary knowledge about a certain subject was obtained.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129180643","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079670
M. Gualsaquí, E. Vizcaíno, Marco J. Flores-Calero, E. Carrera
Heart electrical activity is measured on the body surface; this measure is known as electrocardiogram (ECG). The ECG signals are commonly accompanied by different types of noise, that can lead to a difficult and imprecise computational process to diagnose heart diseases. In this paper, we propose the Kernel Principal Component Analysis (KPCA) method, usually used in image denoising, for minimizing the noise presented in ECG signals. The aim is to present a high-performance ECG signal denoising process. We also include a denoising benchmark among Discrete Wavelet Transform, Principal Component Analysis, and KPCA methods. Physionet database was used and the accuracy was realized with the Mean Squared Error (MSE) metric. The lower MSE values were obtained in the majority of cases with the KPCA method, considering signals with SNR of 5dB.
{"title":"ECG signal denoising through kernel principal components","authors":"M. Gualsaquí, E. Vizcaíno, Marco J. Flores-Calero, E. Carrera","doi":"10.1109/INTERCON.2017.8079670","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079670","url":null,"abstract":"Heart electrical activity is measured on the body surface; this measure is known as electrocardiogram (ECG). The ECG signals are commonly accompanied by different types of noise, that can lead to a difficult and imprecise computational process to diagnose heart diseases. In this paper, we propose the Kernel Principal Component Analysis (KPCA) method, usually used in image denoising, for minimizing the noise presented in ECG signals. The aim is to present a high-performance ECG signal denoising process. We also include a denoising benchmark among Discrete Wavelet Transform, Principal Component Analysis, and KPCA methods. Physionet database was used and the accuracy was realized with the Mean Squared Error (MSE) metric. The lower MSE values were obtained in the majority of cases with the KPCA method, considering signals with SNR of 5dB.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130655573","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079672
Fabián Bustamante, Walter Fuertes, P. Díaz, T. Toulkeridis
As an extension of a previous methodological proposal to provide management of information security in Industrial Control Systems (ICS), this study aims to adapt IT frameworks to protect industrial and manufacturing enterprises against Information and Communication Technology disruptions and malicious activity. In order to accomplish this purpose, the integration of traditional IT standards and good practices such as COBIT, PMI-PMBOK, ITIL and NIST have been merged. Hereby, COBIT has been applied to align management with the enterprise strategy, PMI-PMBOK for project management, and ITIL for the support and maintenance of ICS services. In this respect, NIST-SP 800-82 has been used as a Guide to ICS Security. Prior to its implementation, we performed an evaluation and selection of a group of tools of these frameworks. Furthermore, they have been used effectively in the operational management of the information security in real cases. Among the main obtained benefits, we were able to reduce incidents and accomplished a holistic management. The achieved results and indicators demonstrate that the management tools comply with the control of the information security in the ICS in the contexts of technology, processes, and people aligned with the strategic objectives.
{"title":"Integration of IT frameworks for the management of information security within industrial control systems providing metrics and indicators","authors":"Fabián Bustamante, Walter Fuertes, P. Díaz, T. Toulkeridis","doi":"10.1109/INTERCON.2017.8079672","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079672","url":null,"abstract":"As an extension of a previous methodological proposal to provide management of information security in Industrial Control Systems (ICS), this study aims to adapt IT frameworks to protect industrial and manufacturing enterprises against Information and Communication Technology disruptions and malicious activity. In order to accomplish this purpose, the integration of traditional IT standards and good practices such as COBIT, PMI-PMBOK, ITIL and NIST have been merged. Hereby, COBIT has been applied to align management with the enterprise strategy, PMI-PMBOK for project management, and ITIL for the support and maintenance of ICS services. In this respect, NIST-SP 800-82 has been used as a Guide to ICS Security. Prior to its implementation, we performed an evaluation and selection of a group of tools of these frameworks. Furthermore, they have been used effectively in the operational management of the information security in real cases. Among the main obtained benefits, we were able to reduce incidents and accomplished a holistic management. The achieved results and indicators demonstrate that the management tools comply with the control of the information security in the ICS in the contexts of technology, processes, and people aligned with the strategic objectives.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114455984","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079657
J. Castillo-G., M. Pintado-G., M. Carpio-A., R. Saltarén, A. Rodríguez
In this paper, details the functioning of a plant of control, air suspension of a sphere, through which it will analyze its mathematical model, its nonlinear behavior, which must be linearized in a point of operation, to subsequently generate a PID control of it, in order to verify the correct behavior of the plant against several perturbations, their respective testing and simulation using MATLAB software.
{"title":"Linearization and control of a system of pneumatic suspension of a sphere","authors":"J. Castillo-G., M. Pintado-G., M. Carpio-A., R. Saltarén, A. Rodríguez","doi":"10.1109/INTERCON.2017.8079657","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079657","url":null,"abstract":"In this paper, details the functioning of a plant of control, air suspension of a sphere, through which it will analyze its mathematical model, its nonlinear behavior, which must be linearized in a point of operation, to subsequently generate a PID control of it, in order to verify the correct behavior of the plant against several perturbations, their respective testing and simulation using MATLAB software.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114781138","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079707
L. V. Zorrilla, Jinmi G. Lezama Calvo
Evaluating sensor characteristics is a critical task to choose the device with better performance for a specific application. In case of environmental monitoring systems, being low power design a big challenge, reducing activation periods is a recurrent technique to reduce power so response time of sensors should be evaluated to accomplish this goal. In this article, a hardware-software monitoring system is proposed to evaluate the response time of two pH sensors based on different technologies to compare and verify theoretical behavior and also to test the changes produced when other factors such as temperature or simultaneous measurements occur during the process. The sensors employed were a glass electrode from Atlas Scientific and an ISFET from WINSENSE in addition to a NTC temperature sensor. The response time was measured from readout circuit activation and probed in two different scenarios when both are in the same or in different containers. Results show that ISFET has an impressive response time, less than 3s, while the other one has almost 30s. This confirms the behavior exposed by the theory and also presents the ISFET as the better choice for low power sensor systems.
{"title":"Monitoring system for ISFET and glass electrode behavior comparison","authors":"L. V. Zorrilla, Jinmi G. Lezama Calvo","doi":"10.1109/INTERCON.2017.8079707","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079707","url":null,"abstract":"Evaluating sensor characteristics is a critical task to choose the device with better performance for a specific application. In case of environmental monitoring systems, being low power design a big challenge, reducing activation periods is a recurrent technique to reduce power so response time of sensors should be evaluated to accomplish this goal. In this article, a hardware-software monitoring system is proposed to evaluate the response time of two pH sensors based on different technologies to compare and verify theoretical behavior and also to test the changes produced when other factors such as temperature or simultaneous measurements occur during the process. The sensors employed were a glass electrode from Atlas Scientific and an ISFET from WINSENSE in addition to a NTC temperature sensor. The response time was measured from readout circuit activation and probed in two different scenarios when both are in the same or in different containers. Results show that ISFET has an impressive response time, less than 3s, while the other one has almost 30s. This confirms the behavior exposed by the theory and also presents the ISFET as the better choice for low power sensor systems.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116535863","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079718
Nishant Jain
This work describes design analysis of an energy harvesting system suitable for idly charging power-hungry devices such as smartphones. Battery technology in mobile phones has not sufficiently evolved to offer continuous device use throughout the day. Most smartphones today need to be charged at least twice a day. To improve the user experience with the battery life of a smartphone, we look at both active and idle power consumption of smartphones. Then we discuss a strategy to improve the perception of battery life using a low-power solar energy harvesting system that focuses on supporting the energy consumption of a smartphone in the standby/idle mode. A quantitative analysis is presented along with potential energy harvesting technologies that can enable idle charging for modern smartphones.
{"title":"Energy harvesting for idly charging smartphones to improve perceived battery life","authors":"Nishant Jain","doi":"10.1109/INTERCON.2017.8079718","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079718","url":null,"abstract":"This work describes design analysis of an energy harvesting system suitable for idly charging power-hungry devices such as smartphones. Battery technology in mobile phones has not sufficiently evolved to offer continuous device use throughout the day. Most smartphones today need to be charged at least twice a day. To improve the user experience with the battery life of a smartphone, we look at both active and idle power consumption of smartphones. Then we discuss a strategy to improve the perception of battery life using a low-power solar energy harvesting system that focuses on supporting the energy consumption of a smartphone in the standby/idle mode. A quantitative analysis is presented along with potential energy harvesting technologies that can enable idle charging for modern smartphones.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115833037","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079635
Changyoung An, Byeongjae Kim, H. Ryu
The 2 approaches for the 5G new radio waveform design are the filtering and windowing for the spectrum efficiency improvement by reducing the OOB(out-of-band) power spectrum. As filtering method, UFMC (universal filtered multicarrier), FBMC (filter bank multicarrier) and f-OFDM (filtered orthogonal frequency division multiplexing) waveforms are the potential candidates for a new waveform for 5G system. Another possible approach is to use the windowing in the conventional CP-OFDM system in order to reduce the OOB power spectrum. W-OFDM (window orthogonal frequency division multiplexing) is typical and show comparable performance. Each approach has some advantages and disadvantages together. The best OOB reduction performance can be shown in FBMC system. However, FBMC system is the most complicated and cannot support the general M-QAM (M-ary quadrature amplitude modulation) format. So, it is very important to design a novel OFDM-based waveform that has the similar OOB power spectrum to the FBMC and support the general M-QAM modulation as well. In this paper, we like to propose a WF-OFDM System for the 5G and 5G beyond mobile system waveform design. This WF-OFDM system uses a combination method of the filtering and windowing to get the synergy effect, so that the spectrum efficiency may be increased by reducing the OOB (out-of-band) power spectrum. 4 kinds of WF-OFDM systems are devised depending on the filtering and windowing positions for the OOB performance improvement. Simulations results show that the proposed WF-OFDM system has comparable or better OOB spectrum reduction characteristics to FBMC system. Especially, the proposed system WF-OFDM # 3 and #4 show the remarkable OOB reduction performance even in the short window length of 6 or 8.
{"title":"WF-OFDM (windowing and filtering OFDM) system for the 5G new radio waveform","authors":"Changyoung An, Byeongjae Kim, H. Ryu","doi":"10.1109/INTERCON.2017.8079635","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079635","url":null,"abstract":"The 2 approaches for the 5G new radio waveform design are the filtering and windowing for the spectrum efficiency improvement by reducing the OOB(out-of-band) power spectrum. As filtering method, UFMC (universal filtered multicarrier), FBMC (filter bank multicarrier) and f-OFDM (filtered orthogonal frequency division multiplexing) waveforms are the potential candidates for a new waveform for 5G system. Another possible approach is to use the windowing in the conventional CP-OFDM system in order to reduce the OOB power spectrum. W-OFDM (window orthogonal frequency division multiplexing) is typical and show comparable performance. Each approach has some advantages and disadvantages together. The best OOB reduction performance can be shown in FBMC system. However, FBMC system is the most complicated and cannot support the general M-QAM (M-ary quadrature amplitude modulation) format. So, it is very important to design a novel OFDM-based waveform that has the similar OOB power spectrum to the FBMC and support the general M-QAM modulation as well. In this paper, we like to propose a WF-OFDM System for the 5G and 5G beyond mobile system waveform design. This WF-OFDM system uses a combination method of the filtering and windowing to get the synergy effect, so that the spectrum efficiency may be increased by reducing the OOB (out-of-band) power spectrum. 4 kinds of WF-OFDM systems are devised depending on the filtering and windowing positions for the OOB performance improvement. Simulations results show that the proposed WF-OFDM system has comparable or better OOB spectrum reduction characteristics to FBMC system. Especially, the proposed system WF-OFDM # 3 and #4 show the remarkable OOB reduction performance even in the short window length of 6 or 8.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128949326","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079656
J. P. Lata, D. Chacón-Troya, R. Medina
This paper analyses the influence of common test in power transformers health index assessing. To achieve this objective a test based sensibility analysis is proposed. To show results, a study case is proposed, using a set of real scenarios analyzes the variation of the output (health index) when each input (oil tests) are varied.
{"title":"Improved tool for power transformer health index analysis","authors":"J. P. Lata, D. Chacón-Troya, R. Medina","doi":"10.1109/INTERCON.2017.8079656","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079656","url":null,"abstract":"This paper analyses the influence of common test in power transformers health index assessing. To achieve this objective a test based sensibility analysis is proposed. To show results, a study case is proposed, using a set of real scenarios analyzes the variation of the output (health index) when each input (oil tests) are varied.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128958974","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 : 2017-08-01DOI: 10.1109/INTERCON.2017.8079636
H. Nieto-Chaupis
We presented a generalization of the delay-and-sum beamforming based on the Dirac-Delta functions but with nonlinear argument. For this end, a closed-form expression of the beampattern $mathcal{B}(r)=sumnolimits_{k,q}w(k,q,r)x(k,q,r)$ with r = r(θ), was derived. This expression is computationally simulated through an algorithm that includes integer-order Bessel input functions and random noise. The 4M+N model parameters provided by the Dirac-Delta method are extracted by using a Monte-Carlo-like step which selects the best values for B(r) minimizing the Monte-Carlo error for Δθ = 0.5% for the case of beam response of θ0=30 degrees. These results might sustain the fact that beamforming techniques can use Dirac-Delta functions for modeling arrival signal even in those cases where strong nonlinearity is involved.
{"title":"Generalization of the classical delay-and-sum technique by using nonlinear dirac-delta functions","authors":"H. Nieto-Chaupis","doi":"10.1109/INTERCON.2017.8079636","DOIUrl":"https://doi.org/10.1109/INTERCON.2017.8079636","url":null,"abstract":"We presented a generalization of the delay-and-sum beamforming based on the Dirac-Delta functions but with nonlinear argument. For this end, a closed-form expression of the beampattern $mathcal{B}(r)=sumnolimits_{k,q}w(k,q,r)x(k,q,r)$ with r = r(θ), was derived. This expression is computationally simulated through an algorithm that includes integer-order Bessel input functions and random noise. The 4M+N model parameters provided by the Dirac-Delta method are extracted by using a Monte-Carlo-like step which selects the best values for B(r) minimizing the Monte-Carlo error for Δθ = 0.5% for the case of beam response of θ0=30 degrees. These results might sustain the fact that beamforming techniques can use Dirac-Delta functions for modeling arrival signal even in those cases where strong nonlinearity is involved.","PeriodicalId":229086,"journal":{"name":"2017 IEEE XXIV International Conference on Electronics, Electrical Engineering and Computing (INTERCON)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126851531","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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