Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477340
M. Kotol, Z. Raida, J. Lacik
In the paper, we introduce a novel neural estimator of seats occupied by passengers in a vehicle. The estimator is built from the radial basis function (RBF) neural network. Occupied seats in a vehicle are estimated from transmissions between antennas operating at 60 GHz.
{"title":"Neural-network based in-vehicle localization passengers","authors":"M. Kotol, Z. Raida, J. Lacik","doi":"10.1109/RADIOELEK.2016.7477340","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477340","url":null,"abstract":"In the paper, we introduce a novel neural estimator of seats occupied by passengers in a vehicle. The estimator is built from the radial basis function (RBF) neural network. Occupied seats in a vehicle are estimated from transmissions between antennas operating at 60 GHz.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124916396","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477345
M. Stork
A novel chaotic oscillator with time delayed feedback is described in this paper. The oscillator is based on simple nonlinear circuit, gain stage and delay line. Chaotic systems are characterized by an extreme sensitivity to initial conditions. In this paper, instead of initial condition, the initial input wave (or voltage) is used. For chaotic system control also the gain of the amplifier is changed for different signal on output. Therefore for some values of gain, the output is periodic - non chaotic, but can be changed to chaotic when gain is increased. The behavior of chaotic oscillator was simulated as electronic circuit and results of simulations are presented. This oscillator can be used in different applications where chaotic - non chaotic behavior is important, e.g. generators, encryptions etc.
{"title":"Chaotic oscillator based on delay line","authors":"M. Stork","doi":"10.1109/RADIOELEK.2016.7477345","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477345","url":null,"abstract":"A novel chaotic oscillator with time delayed feedback is described in this paper. The oscillator is based on simple nonlinear circuit, gain stage and delay line. Chaotic systems are characterized by an extreme sensitivity to initial conditions. In this paper, instead of initial condition, the initial input wave (or voltage) is used. For chaotic system control also the gain of the amplifier is changed for different signal on output. Therefore for some values of gain, the output is periodic - non chaotic, but can be changed to chaotic when gain is increased. The behavior of chaotic oscillator was simulated as electronic circuit and results of simulations are presented. This oscillator can be used in different applications where chaotic - non chaotic behavior is important, e.g. generators, encryptions etc.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"65 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127407595","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477392
Sunil Dutt, Sukumar Nandi, G. Trivedi
The gap between capabilities of CMOS technology scaling and requirements of future application workloads is increasing rapidly. There are several promising design approaches that jointly can reduce this gap significantly. Approximate computing is one of them and in recent years, has attracted the strongest attention of the scientific community. Approximate computing exploits inherent error-resilience of applications and features high-performance energy-efficient software and hardware implementations by trading-off computational quality (e.g., accuracy) for computational efforts (e.g., performance and energy). Over the decade, several research efforts have explored approximate computing throughout all the layers of computing stack, however, most of the work at hardware level of abstraction has been proposed on adders. In this paper, we first explain briefly - why approximate adders have attracted the strongest attention? We then provide a comparative survey of state-of-the-art approximate adders. We provide comparison based on both conventional design metrics as well as approximate computing design metrics.
{"title":"A comparative survey of approximate adders","authors":"Sunil Dutt, Sukumar Nandi, G. Trivedi","doi":"10.1109/RADIOELEK.2016.7477392","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477392","url":null,"abstract":"The gap between capabilities of CMOS technology scaling and requirements of future application workloads is increasing rapidly. There are several promising design approaches that jointly can reduce this gap significantly. Approximate computing is one of them and in recent years, has attracted the strongest attention of the scientific community. Approximate computing exploits inherent error-resilience of applications and features high-performance energy-efficient software and hardware implementations by trading-off computational quality (e.g., accuracy) for computational efforts (e.g., performance and energy). Over the decade, several research efforts have explored approximate computing throughout all the layers of computing stack, however, most of the work at hardware level of abstraction has been proposed on adders. In this paper, we first explain briefly - why approximate adders have attracted the strongest attention? We then provide a comparative survey of state-of-the-art approximate adders. We provide comparison based on both conventional design metrics as well as approximate computing design metrics.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127725304","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477385
A. Majumder, Monalisa Das, Bipasha Nath, Abir J. Mondal, B. Bhattacharyya
Analog Comparator is designed to compare two analog inputs and outputs a logical signal indicating which of the inputs is greater or lesser. Comparators, being an essential building block of most high speed devices like Analogue to Digital Converters, are one of the most important components used in signal processing and communication systems. Also it plays a challenging role in high speed mixed signal system designs. In this paper, we have presented an ultra-high speed simple dynamic comparator design using 65nm UMC technology. The circuit is operating at a clock frequency of 6.66GHz and input signal frequency of around 3.33GHz. The propagation delay is minimized to about 47.14ps with a low noise of about 0.531fV2/Hz which makes the proposed structure favourable for Flash or Pipelined data conversion applications. However, it uses only a total of 12 MOS transistors with minimum W/L ratios to make the circuit simple and area efficient, without affecting its performance. With the enhancement of speed and keeping other parameters like power & energy at its optimum value, this comparator circuit is a novel design that can be used in any high speed applications.
{"title":"Design of low noise high speed novel dynamic Analog Comparator in 65nm technology","authors":"A. Majumder, Monalisa Das, Bipasha Nath, Abir J. Mondal, B. Bhattacharyya","doi":"10.1109/RADIOELEK.2016.7477385","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477385","url":null,"abstract":"Analog Comparator is designed to compare two analog inputs and outputs a logical signal indicating which of the inputs is greater or lesser. Comparators, being an essential building block of most high speed devices like Analogue to Digital Converters, are one of the most important components used in signal processing and communication systems. Also it plays a challenging role in high speed mixed signal system designs. In this paper, we have presented an ultra-high speed simple dynamic comparator design using 65nm UMC technology. The circuit is operating at a clock frequency of 6.66GHz and input signal frequency of around 3.33GHz. The propagation delay is minimized to about 47.14ps with a low noise of about 0.531fV2/Hz which makes the proposed structure favourable for Flash or Pipelined data conversion applications. However, it uses only a total of 12 MOS transistors with minimum W/L ratios to make the circuit simple and area efficient, without affecting its performance. With the enhancement of speed and keeping other parameters like power & energy at its optimum value, this comparator circuit is a novel design that can be used in any high speed applications.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129450834","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477376
J. Hallon, M. Bittera, R. Hart'anský, K. Kovac
The paper is focused on finding the optimal test setup for testing radiated immunity of electronic devices communicating via wireless transmission paths. The aim is to ensure the full functionality of equipment under test as well as full functionality of testing system by concurrent existence of both electromagnetic fields. A model of the test site for analysis of these conflictions was created in numerical simulator and the simulation results were verified by measurements.
{"title":"Immunity against electromagnetic field testing of electrical devices using wireless communication","authors":"J. Hallon, M. Bittera, R. Hart'anský, K. Kovac","doi":"10.1109/RADIOELEK.2016.7477376","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477376","url":null,"abstract":"The paper is focused on finding the optimal test setup for testing radiated immunity of electronic devices communicating via wireless transmission paths. The aim is to ensure the full functionality of equipment under test as well as full functionality of testing system by concurrent existence of both electromagnetic fields. A model of the test site for analysis of these conflictions was created in numerical simulator and the simulation results were verified by measurements.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115851013","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477359
Bohumil Brtnik, D. Matousek
The second order Sallen-Key low-pass filter structures (so called biquads) in the voltage and current mode have one common disadvantage, it is a decreasing of the attenuation in the stopband. This fact is caused by losses of the amplification factor of active elements at high frequencies. Some solutions of this problem had been already published for circuits working in the voltage mode, but this problem was not satisfactorily solved for circuits working in the current mode. Therefore, this article presents one of the possible solutions of this problem for circuits working in the current mode.
{"title":"The adjoint transformation usage for correction of the attenuation of the low-pass biquad in the current mode","authors":"Bohumil Brtnik, D. Matousek","doi":"10.1109/RADIOELEK.2016.7477359","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477359","url":null,"abstract":"The second order Sallen-Key low-pass filter structures (so called biquads) in the voltage and current mode have one common disadvantage, it is a decreasing of the attenuation in the stopband. This fact is caused by losses of the amplification factor of active elements at high frequencies. Some solutions of this problem had been already published for circuits working in the voltage mode, but this problem was not satisfactorily solved for circuits working in the current mode. Therefore, this article presents one of the possible solutions of this problem for circuits working in the current mode.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"18 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131845034","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477390
M. Kmec, P. Galajda, R. Herrmann, K. Schilling, S. Slovák
The aim of the paper is to show the novel integrated reflectometer designed for the wideband sensing in the arbitrary frequency band up to 9 GHz and beginning at the DC. The reflectometer utilizes pseudo noise (PN) based single chip transceiver with one transmitter and two wideband sub-sampling receivers including integrated directional couplers. The topology with the two monolithically realized receive channels allows on-line monitoring of the difference between the reference, i.e. well-known medium, and the medium under test (MUT). Simple experiment with moist and dry grain shows the early competence of the approach for the process or material monitoring purposes.
{"title":"Integrated wideband reflectometer with on-line reference measurement capability","authors":"M. Kmec, P. Galajda, R. Herrmann, K. Schilling, S. Slovák","doi":"10.1109/RADIOELEK.2016.7477390","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477390","url":null,"abstract":"The aim of the paper is to show the novel integrated reflectometer designed for the wideband sensing in the arbitrary frequency band up to 9 GHz and beginning at the DC. The reflectometer utilizes pseudo noise (PN) based single chip transceiver with one transmitter and two wideband sub-sampling receivers including integrated directional couplers. The topology with the two monolithically realized receive channels allows on-line monitoring of the difference between the reference, i.e. well-known medium, and the medium under test (MUT). Simple experiment with moist and dry grain shows the early competence of the approach for the process or material monitoring purposes.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131712066","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477415
R. Dolecek, O. Černý, V. Schejbal, M. Rezakhah
The paper deals with behavior of Czech traction power supply system of AC 25 kV. The main goal of this paper is analysis of transient effects during operation of traction vehicles in various modes which can arise during short-circuits in traction system. The protection settings have to be done for all possible states in traction system including identification of short-circuits in the case of recuperation vehicle and protections on the board of this vehicle, which have to be able to detect these short-circuits and also the large voltage drops at catenary. The time of detection are given by safe touch voltage. At the present this problem is studied only by simulations in the given range with partial verification of results by real measurements due to technical and financial costs. The method of solution including parameters of elements of traction circuit is mentioned in this paper as well.
{"title":"The behavior of traction system of AC 25 kV during operation","authors":"R. Dolecek, O. Černý, V. Schejbal, M. Rezakhah","doi":"10.1109/RADIOELEK.2016.7477415","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477415","url":null,"abstract":"The paper deals with behavior of Czech traction power supply system of AC 25 kV. The main goal of this paper is analysis of transient effects during operation of traction vehicles in various modes which can arise during short-circuits in traction system. The protection settings have to be done for all possible states in traction system including identification of short-circuits in the case of recuperation vehicle and protections on the board of this vehicle, which have to be able to detect these short-circuits and also the large voltage drops at catenary. The time of detection are given by safe touch voltage. At the present this problem is studied only by simulations in the given range with partial verification of results by real measurements due to technical and financial costs. The method of solution including parameters of elements of traction circuit is mentioned in this paper as well.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130614217","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477383
Adem Ukte, Aydin Kizilkaya
In this study, sign-error, sign-data, and sign-sign modifications of the multirate least mean squares (LMS) filter are proposed as an alternative to the existing multirate LMS and normalized LMS filters for reconstructing the high rate desired signal from its several low rate noisy observations. The performance of all the existing and the proposed methods are compared by using an adaptive noise cancellation simulation example applied to an audio signal. It is seen from the simulation results that some of the proposed methods lead to better results than the existing ones especially in the convergence speed sense.
{"title":"Comparing the performances of least mean squares based multirate adaptive filters","authors":"Adem Ukte, Aydin Kizilkaya","doi":"10.1109/RADIOELEK.2016.7477383","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477383","url":null,"abstract":"In this study, sign-error, sign-data, and sign-sign modifications of the multirate least mean squares (LMS) filter are proposed as an alternative to the existing multirate LMS and normalized LMS filters for reconstructing the high rate desired signal from its several low rate noisy observations. The performance of all the existing and the proposed methods are compared by using an adaptive noise cancellation simulation example applied to an audio signal. It is seen from the simulation results that some of the proposed methods lead to better results than the existing ones especially in the convergence speed sense.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124307822","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 : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477424
M. Uhrina, J. Bienik, M. Vaculík
In the last years the interest of multimedia services has markedly increased. This leads to requirements of quality assessment, especially in video domain. Compression together with transmission link imperfection can be considered as two main factors that influence the quality. This paper deals with assessment of impact of HEVC/H.265 and VP9 compression standards on the video quality for high resolutions using objective metrics and defining theirs efficiency. The evaluation is done for four types of sequences with Full HD and Ultra HD resolutions depending on content. The results showed that there is no big difference between the tested codecs - both reach similar efficiency. The average BD-rate saving of VP9 codec relative to H.265 is only 2,24%.
{"title":"Coding efficiency of HEVC/H.265 and VP9 compression standards for high resolutions","authors":"M. Uhrina, J. Bienik, M. Vaculík","doi":"10.1109/RADIOELEK.2016.7477424","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477424","url":null,"abstract":"In the last years the interest of multimedia services has markedly increased. This leads to requirements of quality assessment, especially in video domain. Compression together with transmission link imperfection can be considered as two main factors that influence the quality. This paper deals with assessment of impact of HEVC/H.265 and VP9 compression standards on the video quality for high resolutions using objective metrics and defining theirs efficiency. The evaluation is done for four types of sequences with Full HD and Ultra HD resolutions depending on content. The results showed that there is no big difference between the tested codecs - both reach similar efficiency. The average BD-rate saving of VP9 codec relative to H.265 is only 2,24%.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123481452","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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