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2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)最新文献

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Unsupervised speech transcription and alignment based on two complementary ASR systems 基于两个互补ASR系统的无监督语音转录和对齐
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477435
Tomás Koctúr, P. Viszlay, J. Staš, M. Lojka, J. Juhár
{"title":"Unsupervised speech transcription and alignment based on two complementary ASR systems","authors":"Tomás Koctúr, P. Viszlay, J. Staš, M. Lojka, J. Juhár","doi":"10.1109/RADIOELEK.2016.7477435","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477435","url":null,"abstract":"An acoustic model is a necessary component of automatic speech recognition system. Acoustic models are trained on a lot of speech recordings with transcriptions. Usually, hundreds of transcribed recordings are required. It is very time and resource consuming process to create manual transcriptions. Acoustic models may be obtained automatically with unsupervised acoustic model training, which uses online speech resources. Obtained speech data are recognized with low resourced automatic speech recognition system. Unsupervised techniques are able to filter out the erroneous hypotheses from the result and the rest use for acoustic model training. Unsupervised methods for generating speech corpora for acoustic model training are presented in this paper.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"33 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":"126489947","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
Capacitively loaded dipoles for chipless RFID transponder 无芯片RFID应答器电容负载偶极子
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477349
J. Havlicek, M. Polivka, M. Svanda, J. Macháč
{"title":"Capacitively loaded dipoles for chipless RFID transponder","authors":"J. Havlicek, M. Polivka, M. Svanda, J. Macháč","doi":"10.1109/RADIOELEK.2016.7477349","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477349","url":null,"abstract":"This paper proposes a novel uniplanar capacitively loaded dipole-scatterers as building elements for chipless RFID tags with frequency domain coding information. These elements are compared with the known structures in terms of quantities which are crucial for read range (radar cross-section), coding bit capacity (resonance bandwidth), and electrical size. Most suitable type of scatterer was arranged into a 5-bit tag, manufactured and verified by measurement in anechoic chamber.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"46 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":"132037073","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: 5
First Ka and Q band results of atmospheric attenuation measurements using Alphasat receiver in Czech Republic 首先是捷克Alphasat接收机大气衰减测量的Ka和Q波段结果
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477398
V. Pek, V. Brazda, O. Fiser
{"title":"First Ka and Q band results of atmospheric attenuation measurements using Alphasat receiver in Czech Republic","authors":"V. Pek, V. Brazda, O. Fiser","doi":"10.1109/RADIOELEK.2016.7477398","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477398","url":null,"abstract":"This contribution is describing interesting attenuation events in 39 and 19 GHz frequency bands using the measurement of signal of satellite Alphasat in Prague. Rain rates at two sites were measured continuously. A table of highest measured attenuation is added and discussed including thought about the rain type. The highest recorded attenuation was A19=8.1dB (A39=23dB) in 19 (39) GHz frequency bands while rain rate was exceeding 20 mm/h. An original equation for frequency scaling was formulated in the form of A39=2,7 A19 + 2,5 [dB].","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"45 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":"133748961","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
Improvement of multiexponential signal decomposition by the preprocessing 多指数信号分解的预处理改进
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477372
I. András, P. Dolinský, L. Michaeli, J. Saliga
{"title":"Improvement of multiexponential signal decomposition by the preprocessing","authors":"I. András, P. Dolinský, L. Michaeli, J. Saliga","doi":"10.1109/RADIOELEK.2016.7477372","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477372","url":null,"abstract":"Dielectric absorption of capacitors is a source of possible errors in the analog preprocessing blocks and integrating analog to digital converters. Parasitic relaxation components in the capacitor's model could be estimated by the decomposition of the charging multiexponential current. Paper deals with the possible preprocessing methods, selection of the optimal sampling conditions with the aim to enhance the robustness of the signal decomposition algorithms on the superimposed thermal and quantization noise.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"48 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":"125127048","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
Precission Approach Radar-elevation antenna unit 精确进近雷达-仰角天线单元
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477411
V. Závodný
{"title":"Precission Approach Radar-elevation antenna unit","authors":"V. Závodný","doi":"10.1109/RADIOELEK.2016.7477411","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477411","url":null,"abstract":"This article is focused on Precision Approach Radar with active electronically scaned antenna AESA. For more detailed explanation is presented only elevation antenna. It was explained by the fundamental principle of weighting in the mode of transmission and reception. Final results are presented on the realized antenna.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"95 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":"114597714","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: 0
A novel block-based data hiding scheme in SVD-DCT composite domain 一种新的基于块的SVD-DCT复合域数据隐藏方案
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477413
G. Bugár, D. Levický, M. Broda, V. Hajduk
{"title":"A novel block-based data hiding scheme in SVD-DCT composite domain","authors":"G. Bugár, D. Levický, M. Broda, V. Hajduk","doi":"10.1109/RADIOELEK.2016.7477413","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477413","url":null,"abstract":"This paper presents a robust block-based watermarking scheme for multimedia copyright protection. In this work, we used benefits of domain combination of Singular Value Decomposition (SVD) and Discrete Cosine Transformation (DCT). Our aim was to utilize the favorable properties of both transformations to design of a unique and useful transformation standard algorithm for embedding watermarks into cover data. The proposed watermarking scheme is verified from the point of view of imperceptibility expressed by objective quality measure PSNR (Peak Signal-to-Noise Ratio) and robustness to different types of removal (JPEG compression, Gaussian filtering, Sharpening) and geometric attacks (Scaling and Rotating).","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"2 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":"117115992","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
Radiation and scattering of H-polarized wave by a plane-parallel waveguide 平面平行波导对h偏振波的辐射和散射
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477337
Y. Yukhanov, T. Privalova
{"title":"Radiation and scattering of H-polarized wave by a plane-parallel waveguide","authors":"Y. Yukhanov, T. Privalova","doi":"10.1109/RADIOELEK.2016.7477337","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477337","url":null,"abstract":"The interrelationship of radiation and scattering characteristics was examined for the case of incident plane H-polarized wave onto an antenna in the form of a plane-parallel waveguide.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"33 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120986656","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
On the effectiveness of application of compensation ramp in switching power converters with delays 补偿斜坡在带时延开关电源变换器中的应用效果
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477373
D. Pikulins, A. Litvinenko
{"title":"On the effectiveness of application of compensation ramp in switching power converters with delays","authors":"D. Pikulins, A. Litvinenko","doi":"10.1109/RADIOELEK.2016.7477373","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477373","url":null,"abstract":"The current study is dedicated to the investigation of stability issues occurring in switching power converters with non-ideal feedback circuitry. The interaction of nonlinear effects caused by the introduction of delay in the control circuitry of the compensated boost converters is studied by means of complete bifurcation diagrams, exploiting discrete-time modeling approach. The effectiveness of widening the stability region using the compensation ramp is explored for practically relevant values of delays.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"46 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":"121451176","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
Multi-rate coupled circuit-device simulation 多速率耦合电路器件仿真
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477334
K. Bittner, H. Brachtendorf
{"title":"Multi-rate coupled circuit-device simulation","authors":"K. Bittner, H. Brachtendorf","doi":"10.1109/RADIOELEK.2016.7477334","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477334","url":null,"abstract":"In this paper a tool for coupled circuit/EM/device simulation is presented with emphasis on radio frequency (RF) applications. The simulator comprises AC, DC, transient analyses, the latter employing multi-step integration formulas based on algebraic and trigonometric polynomials, and dedicated techniques for RF circuits such as Harmonic Balance, shooting and multi-rate spline-wavelet techniques.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"31 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":"124845873","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: 0
Artificial neural networks in an inertial measurement unit 惯性测量装置中的人工神经网络
2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2016-04-19 DOI: 10.1109/RADIOELEK.2016.7477431
L. Tejmlova, J. Sebesta, Petr Zelina
{"title":"Artificial neural networks in an inertial measurement unit","authors":"L. Tejmlova, J. Sebesta, Petr Zelina","doi":"10.1109/RADIOELEK.2016.7477431","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477431","url":null,"abstract":"This paper presents an effective method combining classic data processing using a simple MEMS inertial measurement unit (IMU) and an artificial neural network (AAN) to achieve more accurate pedestrian positioning. Generally, this application based on a standard IMU without support from another system, such as satellite navigation, is characterized by poorly estimating position and orientation, wherein the positioning error grows over time. The proposed approach uses an artificial neural network, which is designed to determine the status of \"what is happening\" with the body of the IMU. Two possible statuses are considered. The first of these is the fact that the IMU is static, regardless of its orientation, and the second state is a man walking with an IMU placed on his body. In principal, further statuses can be added to the classification results from the ANN, e.g. jogging, driving, shaking, spinning, flying, falling etc. This paper not only presents the theoretical but also a series of experiments. It has been demonstrated that the proposed approach improves personal tracking accuracy by more than ten times compared to the application of an unaided IMU.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"21 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":"122069164","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
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