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Proceedings of 21st International Conference Radioelektronika 2011最新文献

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Superconducting RSFQ logic: Towards 100GHz digital electronics 超导RSFQ逻辑:迈向100GHz数字电子学
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936486
V. Michal, E. Baggetta, M. Aurino, S. Bouat, J. Villégier
{"title":"Superconducting RSFQ logic: Towards 100GHz digital electronics","authors":"V. Michal, E. Baggetta, M. Aurino, S. Bouat, J. Villégier","doi":"10.1109/RADIOELEK.2011.5936486","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936486","url":null,"abstract":"The Rapid Single-Flux-Quantum logic (RSFQ) presents an efficient way to achieve ultra fast digital operations. This logic uses the macroscopic effects which can be found in nano-structured superconductor devices such as the Josephson AC and DC effects, and the magnetic flux quantization. As the typical time of the Josephson junction quantized phase leap 2π is in the order of picoseconds, the RSFQ circuits can operate with clock frequencies in the order of hundreds of GHz. This invited paper focuses on basic principles of superconducting RSFQ logic as well as on typical applications, such as the signal conversion or petaflops computing systems. In addition we point out the benefits of the semi-metallic NbN-TaxN-NbN Josephson junction technology, which has been developed at CEA-INAC in Grenoble.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130407238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Simulation of MTLs via Wendroff method combined with modified nodal analysis 结合修正节点分析的Wendroff法模拟MTLs
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936479
L. Brancík, Bretislav Sevcik
{"title":"Simulation of MTLs via Wendroff method combined with modified nodal analysis","authors":"L. Brancík, Bretislav Sevcik","doi":"10.1109/RADIOELEK.2011.5936479","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936479","url":null,"abstract":"The paper deals with a time-domain simulation of multiconductor transmission lines (MTLs) based on the connection of the implicit Wendroff method and modified nodal analysis (MNA). The work improves the Wendroff-based techniques, with MTL's boundary conditions treated via generalized Thévenin equivalents, and thus enabling to consider simple terminating circuits only. The utilization of the MNA approach ensures a high universality and covers arbitrarily complex systems on principle. The solution of resultant MNA differential algebraic equations (DAEs) is based on the backward Euler technique. All the computer experiments have been performed in the Matlab language environment.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131367631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Advanced parallel processing of Lyapunov exponents verified by practical circuit 李雅普诺夫指数的先进并行处理方法经实际电路验证
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936392
T. Gotthans, J. Petrzela, Z. Hrubos
{"title":"Advanced parallel processing of Lyapunov exponents verified by practical circuit","authors":"T. Gotthans, J. Petrzela, Z. Hrubos","doi":"10.1109/RADIOELEK.2011.5936392","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936392","url":null,"abstract":"An advanced method for parallel computation of Lyapunov exponents in nonlinear parameter dependent continuous dynamical systems is presented. For computing exponents MATLAB with Parallel Toolbox was used. A simplest physical chaotic flow published in [2] was chosen and mathematically analysed. Obtained equation's parameters were calculated and synthesized into a circuit. Realization was implemented into a analog circuit and compared with the theory.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134014308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Initial tests of DVB-T receivers on tolerance to impulsive interference DVB-T接收机对脉冲干扰容忍度的初步测试
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936471
S. Matejka, Pavel Hladík
{"title":"Initial tests of DVB-T receivers on tolerance to impulsive interference","authors":"S. Matejka, Pavel Hladík","doi":"10.1109/RADIOELEK.2011.5936471","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936471","url":null,"abstract":"Orthogonal frequency-division multiplexing (OFDM) systems are well known for their robustness against impulsive interference. However, the impulsive interference can still significantly affect performance of OFDM systems including terrestrial digital video broadcasting (DVB-T). In this paper we present initial laboratory measurements focused on the evaluation of DVB-T receivers' impulse interference immunity. First, the impulsive interference model is adopted and the set-up for impulse immunity measurement is introduced. Then several different measurements and results are presented. Two basic scenarios are selected for the measurements. In first one we assume impulsive interference with short impulsive noise pulse duration, where only one DVB-T symbol in burst sequence is corrupted. In second scenario the impulsive noise with impulses longer than DVB-T symbol is applied.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123748686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A stereo depth recovery method using belief propagation 基于信念传播的立体深度恢复方法
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936462
P. Kamencay, M. Breznan
{"title":"A stereo depth recovery method using belief propagation","authors":"P. Kamencay, M. Breznan","doi":"10.1109/RADIOELEK.2011.5936462","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936462","url":null,"abstract":"Stereo vision refers to the ability to infer information on the 3D structure of scene from two or more images taken from different viewpoints. This paper describes procedure for depth map creating using rectified stereo images and segmentation algorithm belief propagation (BP). Very necessary steps to creating depth map are camera calibration and image rectification of the image pairs. Calibration of the stereoscopic cameras consists from a two parameters of a stereo system: intrinsic parameters, which characterize the transformation mapping an image point from camera to pixel coordinates in each camera and extrinsic parameters, which describe the relative position and orientation of the two cameras. The depth recovery is important problem of image analysis in the study of compute vision and is optimized by using the belief propagation techniques.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122359571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
An alternative look at the formulation of 2D contour integral method 二维轮廓积分法的另一种表述方法
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936396
M. Štumpf
{"title":"An alternative look at the formulation of 2D contour integral method","authors":"M. Štumpf","doi":"10.1109/RADIOELEK.2011.5936396","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936396","url":null,"abstract":"An approximate integral-equation approach for an analysis of microstrip-based problems is formulated by means of the complex frequency-domain reciprocity theorem of the time convolution type. It is demonstrated that the contour integral method can be viewed as the point-matched method of moments.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121719911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A new compact CMOS realization of sinusoidal oscillator using a single modified CBTA 一个新的紧凑的CMOS实现正弦振荡器使用一个单一的改进的CBTA
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936433
N. Herencsar, J. Koton, K. Vrba, A. Lahiri, U. E. Ayten, M. Sagbas
{"title":"A new compact CMOS realization of sinusoidal oscillator using a single modified CBTA","authors":"N. Herencsar, J. Koton, K. Vrba, A. Lahiri, U. E. Ayten, M. Sagbas","doi":"10.1109/RADIOELEK.2011.5936433","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936433","url":null,"abstract":"In this paper, a new compact realization of sinusoidal oscillator using modified current backward transcon-ductance amplifier (MCBTA) is reported. The proposed circuit employs a single MCBTA and four passive components including two grounded capacitors. The circuit provides completely de-coupled condition of oscillation (CO) of the frequency of oscillation (FO), i.e. no term in the CO is present in the FO and vice versa. Both the CO and FO are independently tunable by two different grounded resistors. The FO is also tunable by means of the transconductance and thereby is electronically tunable. SPICE simulation results have confirmed the workability of the proposed circuit.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124051898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Model parameters selection for SVM classification using Particle Swarm Optimization 基于粒子群算法的SVM分类模型参数选择
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936432
Martin Hric, M. Chmulik, R. Jarina
{"title":"Model parameters selection for SVM classification using Particle Swarm Optimization","authors":"Martin Hric, M. Chmulik, R. Jarina","doi":"10.1109/RADIOELEK.2011.5936432","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936432","url":null,"abstract":"Support Vector Machine (SVM) classification requires set of one or more parameters and these parameters have significant influence on classification precision and generalization ability. Searching for suitable model parameters invokes great computational load, which accentuates with increasing size of the dataset and with amount of the parameters being optimized. In this paper we present and compare various SVM parameters selection techniques, namely grid search, Particle Swarm Optimization (PSO) and Genetic Algorithm (GA). Experiments conducting over two datasets show promising results with PSO and GA optimization technique.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123064809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
QoE evaluation of high-definition IPTV services 高清IPTV业务QoE评价
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936485
M. Ries, Peter Froehlich, R. Schatz
{"title":"QoE evaluation of high-definition IPTV services","authors":"M. Ries, Peter Froehlich, R. Schatz","doi":"10.1109/RADIOELEK.2011.5936485","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936485","url":null,"abstract":"Quality of Experience (QoE) in the context of high definition IPTV represents a purely subjective measure from the user's perspective of the overall value of the service provided. QoE cannot be taken simply as objective quality parameter of the service, but must also take into consideration every factor that contributes to overall user service perception. This paper introduces typical challenges and approaches for QoE testing of HD IPTV services. We provide an overview of influence factors, with a special focus on content types and characteristics, and we provide decision criteria for selecting subjective testing methods for IPTV research studies. We furthermore highlight related key results and learnings from the ongoing European research project OptiBand.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116117224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Comparison of channel coding used in DVB-T/H and DVB-SH standards of digital television broadcasting 数字电视广播DVB-T/H和DVB-SH标准中信道编码的比较
Proceedings of 21st International Conference Radioelektronika 2011 Pub Date : 2011-04-19 DOI: 10.1109/RADIOELEK.2011.5936466
Ondrej Huttl, T. Kratochvil
{"title":"Comparison of channel coding used in DVB-T/H and DVB-SH standards of digital television broadcasting","authors":"Ondrej Huttl, T. Kratochvil","doi":"10.1109/RADIOELEK.2011.5936466","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2011.5936466","url":null,"abstract":"This paper describes and compares two different channel coding processing systems used in DVB-H and DVB-SH-A standards of digital video broadcasting to handheld devices. DVB-SH satellite handheld system, as a hybrid of satellite and terrestrial transmission paths, offers two transmission modes — Orthogonal Frequency Division Multiplexing OFDM and Time Division Multiplexing TDM. OFDM mode only is used in Complementary Ground Component CGC terrestrial path. Both OFDM and TDM modes can be used in SC Satellite Component. DVB-SH-A OFDM mode is considered only in the paper and is compared with DVB-H terrestrial system. Theoretical simulation results of C/N requirements are included.","PeriodicalId":267447,"journal":{"name":"Proceedings of 21st International Conference Radioelektronika 2011","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129313316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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