Pub Date : 2017-05-01DOI: 10.1109/MOCAST.2017.7937626
A. Giakoumis, C. Volos, I. Stouboulos, Ioannis K. Kyprianidis, V. Pham
In this work, the implementation of a chaotic oscillator by using a microcontroller is proposed. The dynamical system, which is used, belongs to the recently new proposed category of dynamical systems with hidden attractors. In more details, the system has an infinite number of equilibrium points which is located on an open hyperbolic sine curve. By programming the microcontroller, the three most useful tools of nonlinear theory, the phase portrait, the Poincaré map and the bifurcation diagram can be produced. The comparison of these with the respective simulation results, which are produced by solving the continuous dynamical system with Runge-Kutta, verified the feasibility of the proposed method.
{"title":"A chaotic system with equilibria located on an open curve and its microcontroller implementation","authors":"A. Giakoumis, C. Volos, I. Stouboulos, Ioannis K. Kyprianidis, V. Pham","doi":"10.1109/MOCAST.2017.7937626","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937626","url":null,"abstract":"In this work, the implementation of a chaotic oscillator by using a microcontroller is proposed. The dynamical system, which is used, belongs to the recently new proposed category of dynamical systems with hidden attractors. In more details, the system has an infinite number of equilibrium points which is located on an open hyperbolic sine curve. By programming the microcontroller, the three most useful tools of nonlinear theory, the phase portrait, the Poincaré map and the bifurcation diagram can be produced. The comparison of these with the respective simulation results, which are produced by solving the continuous dynamical system with Runge-Kutta, verified the feasibility of the proposed method.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128925552","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937654
W. Sayed, A. Radwan, H. Fahmy
In the recent decades, applications of chaotic systems have flourished in various fields. Hence, there is an increasing demand on generalized, modified and novel chaotic systems. In this paper, we combine the general equation of jerk-based chaotic systems with simple scaled discrete chaotic maps. Numerical simulations of the properties of two systems, each with four control parameters, are presented. The parameters show interesting behaviors and dependencies among them. In addition, they exhibit controlling capabilities of the ranges of system responses, hence the size of the attractor diagram. Moreover, these behaviors and dependencies are analogous to those of the corresponding discrete chaotic maps.
{"title":"Chaotic systems based on jerk equation and discrete maps with scaling parameters","authors":"W. Sayed, A. Radwan, H. Fahmy","doi":"10.1109/MOCAST.2017.7937654","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937654","url":null,"abstract":"In the recent decades, applications of chaotic systems have flourished in various fields. Hence, there is an increasing demand on generalized, modified and novel chaotic systems. In this paper, we combine the general equation of jerk-based chaotic systems with simple scaled discrete chaotic maps. Numerical simulations of the properties of two systems, each with four control parameters, are presented. The parameters show interesting behaviors and dependencies among them. In addition, they exhibit controlling capabilities of the ranges of system responses, hence the size of the attractor diagram. Moreover, these behaviors and dependencies are analogous to those of the corresponding discrete chaotic maps.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"55 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123434200","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937611
Y. Moisiadis, Konstantinos Nikelis, P. Papadopoulos
A methodology is presented for compact modeling synthesis of integrated transformers. The synthesis procedure is based on a specific constrained optimization procedure to evaluate the elements of the compact model. The proposed methodology is independent of technology parameters or the geometrical characteristics of the inductor.
{"title":"A methodology for integrated transformer compact modeling","authors":"Y. Moisiadis, Konstantinos Nikelis, P. Papadopoulos","doi":"10.1109/MOCAST.2017.7937611","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937611","url":null,"abstract":"A methodology is presented for compact modeling synthesis of integrated transformers. The synthesis procedure is based on a specific constrained optimization procedure to evaluate the elements of the compact model. The proposed methodology is independent of technology parameters or the geometrical characteristics of the inductor.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131983030","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937649
Dimitrios Baxevanakis, P. Sotiriadis
A 1.8V CMOS chopper four-quadrant analog multiplier, intending to serve as an autonomous IC block for low-frequency signal processing, is presented. Particular emphasis is laid upon achieving low output noise by means of chopper stabilization, while the multiplier's operation is based on the MOS Translinear Principle. The proposed design has been implemented and simulated in TSMC 0.18 µm CMOS process.
{"title":"A 1.8V CMOS chopper four-quadrant analog multiplier","authors":"Dimitrios Baxevanakis, P. Sotiriadis","doi":"10.1109/MOCAST.2017.7937649","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937649","url":null,"abstract":"A 1.8V CMOS chopper four-quadrant analog multiplier, intending to serve as an autonomous IC block for low-frequency signal processing, is presented. Particular emphasis is laid upon achieving low output noise by means of chopper stabilization, while the multiplier's operation is based on the MOS Translinear Principle. The proposed design has been implemented and simulated in TSMC 0.18 µm CMOS process.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132442065","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937669
G. K. Varotsos, H. Nistazakis, G. Tombras, W. Gappmair
Free space optical (FSO) communication systems or point-to-point optical wireless communication links via light, have recently emerged as a very promising and commercially viable laser technology that comes up to the growing demands for larger available bandwidth, huge data rates and higher security level transmissions in a both energy-efficient and cost-effective manner. However, their performance is adversely affected by atmospheric turbulence, pointing errors and phase noise effects when Subcarrier Intensity Modulation (SIM) based on M-PSK modulation formats are employed. In this work, the error performance of a FSO link using SIM based on M-PSK scheme is investigated over weak turbulence conditions along with the presence of pointing errors. The turbulence-induced fluctuations are emulated through the mathematically simple and compact Gamma distribution model that is very accurate for weak turbulence conditions, while the effect of phase noise is modeled by the suitable Tikhonov distribution. Under these assumptions, novel approximate closed-form expressions for the average SEP are derived which are accurate enough over a wide SNR range. Finally, proper numerical results are presented and validated by Monte Carlo simulations.
{"title":"Average error performance in Subcarrier PSK FSO links over weak turbulence channels with spatial jitter and phase noise","authors":"G. K. Varotsos, H. Nistazakis, G. Tombras, W. Gappmair","doi":"10.1109/MOCAST.2017.7937669","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937669","url":null,"abstract":"Free space optical (FSO) communication systems or point-to-point optical wireless communication links via light, have recently emerged as a very promising and commercially viable laser technology that comes up to the growing demands for larger available bandwidth, huge data rates and higher security level transmissions in a both energy-efficient and cost-effective manner. However, their performance is adversely affected by atmospheric turbulence, pointing errors and phase noise effects when Subcarrier Intensity Modulation (SIM) based on M-PSK modulation formats are employed. In this work, the error performance of a FSO link using SIM based on M-PSK scheme is investigated over weak turbulence conditions along with the presence of pointing errors. The turbulence-induced fluctuations are emulated through the mathematically simple and compact Gamma distribution model that is very accurate for weak turbulence conditions, while the effect of phase noise is modeled by the suitable Tikhonov distribution. Under these assumptions, novel approximate closed-form expressions for the average SEP are derived which are accurate enough over a wide SNR range. Finally, proper numerical results are presented and validated by Monte Carlo simulations.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128258284","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937623
Kamil Mielcarek, A. Barkalov, L. Titarenko
A method is proposed for designing LUT-based Moore FSMs. The method is based on splitting the set of classes of pseudoequivalent states. There are given example of design and results of investigations. The method allows obtaining FSM logic circuits having less amount of LUTs than known from literature methods.
{"title":"Designing Moore FSM with extended class codes","authors":"Kamil Mielcarek, A. Barkalov, L. Titarenko","doi":"10.1109/MOCAST.2017.7937623","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937623","url":null,"abstract":"A method is proposed for designing LUT-based Moore FSMs. The method is based on splitting the set of classes of pseudoequivalent states. There are given example of design and results of investigations. The method allows obtaining FSM logic circuits having less amount of LUTs than known from literature methods.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131747882","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937647
A. Barkalov, L. Titarenko, J. Bieganowski
A method of hardware reduction is proposed for logic circuits of Moore FSMs implemented with CPLDs. The method is based on the idea of code sharing. The main difference from already known methods is that the counter increases its content during conditional and unconditional transitions. An example of application of proposed method is given.
{"title":"Code sharing in CPLD-based Moore FSMs","authors":"A. Barkalov, L. Titarenko, J. Bieganowski","doi":"10.1109/MOCAST.2017.7937647","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937647","url":null,"abstract":"A method of hardware reduction is proposed for logic circuits of Moore FSMs implemented with CPLDs. The method is based on the idea of code sharing. The main difference from already known methods is that the counter increases its content during conditional and unconditional transitions. An example of application of proposed method is given.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133153811","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937653
K. Kokkinidis, Athanasia Stergiaki, A. Tsagaris
This paper proposes a methodology for recognition of vocal music (Byzantine music) via multi-modal signals processing. A sequence of multi-modal signals is captured from the expert's (teacher) and student's hymns performances, respectively. The machine learning system is trained using the values of particular features which are extracted from the captured multi-modal signals. After the system is being trained then it becomes able to recognize any hymn performance from the corpus. Training and recognition takes place in real time by utilizing machine learning techniques. The evaluation of the system was carried out with the cross - validation statistical method Jackknife, giving promising results.
{"title":"Machine learning via multimodal signal processing","authors":"K. Kokkinidis, Athanasia Stergiaki, A. Tsagaris","doi":"10.1109/MOCAST.2017.7937653","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937653","url":null,"abstract":"This paper proposes a methodology for recognition of vocal music (Byzantine music) via multi-modal signals processing. A sequence of multi-modal signals is captured from the expert's (teacher) and student's hymns performances, respectively. The machine learning system is trained using the values of particular features which are extracted from the captured multi-modal signals. After the system is being trained then it becomes able to recognize any hymn performance from the corpus. Training and recognition takes place in real time by utilizing machine learning techniques. The evaluation of the system was carried out with the cross - validation statistical method Jackknife, giving promising results.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131711254","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937634
C. Kaitatzis, A. Boursianis, S. Goudos, P. Dallas
In this paper, we make a preliminary coverage study for base stations (BS) in millimeter wave bands based on recently proposed propagation models. More specifically, we compute the cell radius and the coverage area of a future fifth generation (5G) cellular network based on the Close-In (CI) and the Alpha-Beta-Gamma (ABG) radio propagation models. Also, the required base station density is calculated corresponding to urban, suburban and rural regions.
{"title":"A preliminary coverage study in millimeter wave bands for 5G communication networks","authors":"C. Kaitatzis, A. Boursianis, S. Goudos, P. Dallas","doi":"10.1109/MOCAST.2017.7937634","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937634","url":null,"abstract":"In this paper, we make a preliminary coverage study for base stations (BS) in millimeter wave bands based on recently proposed propagation models. More specifically, we compute the cell radius and the coverage area of a future fifth generation (5G) cellular network based on the Close-In (CI) and the Alpha-Beta-Gamma (ABG) radio propagation models. Also, the required base station density is calculated corresponding to urban, suburban and rural regions.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121404120","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 : 2017-05-01DOI: 10.1109/MOCAST.2017.7937624
George Isaakidis, Antonis Spiropoulos, M. Drakaki
A three dimensional printer using step motors from 3.5-inch disk drives was built for our undergraduate research thesis project. An Arduino microcontroller was in charge of controlling the steppers through the DC drivers and a 3D pen was used as the printing unit. The program was created with the Arduino suite and the design of the drawing with the open source Grbl using g code. For the axes, three disk drives were reassembled to form the X, Y and Z levels. Moreover, this structure can be operated as a Computerized Numerical Control machine by replacing the 3D pen with other components, such as a drill. The 3D printer will be used for educational purposes, as a teaching tool in laboratory projects. It provides an opportunity for students to learn more about robotic machines and create one from scratch.
{"title":"An educational purpose built three dimensional printer","authors":"George Isaakidis, Antonis Spiropoulos, M. Drakaki","doi":"10.1109/MOCAST.2017.7937624","DOIUrl":"https://doi.org/10.1109/MOCAST.2017.7937624","url":null,"abstract":"A three dimensional printer using step motors from 3.5-inch disk drives was built for our undergraduate research thesis project. An Arduino microcontroller was in charge of controlling the steppers through the DC drivers and a 3D pen was used as the printing unit. The program was created with the Arduino suite and the design of the drawing with the open source Grbl using g code. For the axes, three disk drives were reassembled to form the X, Y and Z levels. Moreover, this structure can be operated as a Computerized Numerical Control machine by replacing the 3D pen with other components, such as a drill. The 3D printer will be used for educational purposes, as a teaching tool in laboratory projects. It provides an opportunity for students to learn more about robotic machines and create one from scratch.","PeriodicalId":202381,"journal":{"name":"2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)","volume":"03 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129088740","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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