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2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)最新文献

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Software implementation of the Recursive Discrete Fourier Transform 递归离散傅里叶变换的软件实现
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-19 DOI: 10.1109/RADIOELEK.2017.7936647
Márton Kovács, Z. Kollár
{"title":"Software implementation of the Recursive Discrete Fourier Transform","authors":"Márton Kovács, Z. Kollár","doi":"10.1109/RADIOELEK.2017.7936647","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7936647","url":null,"abstract":"The Discrete Fourier Transform (DFT) is one of the fundamental operations in digital signal processing. This paper presents a software based implementation of a less known observer based Recursive DFT on a PC ×86 architecture and on a Microchip PIC30 microcontroller. The results are compared with an efficient/optimized Fast Fourier Transform (FFT) implementation. Both algorithms require complex operations with real valued adders and multipliers, thus a complex result has to be calculated separately for the real and imaginary parts. During the implementation floating-point and fixed-point number representation is applied. The comparison is performed based on the required resources and the computational time.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130954053","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
Fast rerouting algorithm in distributed computer networks based on subnet routing method 基于子网路由方法的分布式计算机网络快速重路由算法
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-19 DOI: 10.1109/RADIOELEK.2017.7936648
D. Perepelkin, M. Ivanchikova, A. Ivutin
{"title":"Fast rerouting algorithm in distributed computer networks based on subnet routing method","authors":"D. Perepelkin, M. Ivanchikova, A. Ivutin","doi":"10.1109/RADIOELEK.2017.7936648","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7936648","url":null,"abstract":"Rerouting processes are considered to be especially important in modern computer networks. To provide the quality of service (QoS) in conditions of network equipment overloads and failures the rerouting protocols used must provide continuous access to the network for end users. One of effective approaches of support of fault-tolerant routing is use of subnet routing method. The purpose of work is development of mathematical model and fast rerouting algorithm of data flows on the distributed computer networks based on subnet routing method. In the work the program emulator is developed and the comparative analysis of efficiency of the offered approach with some known algorithms of fast rerouting is carried out.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127041110","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: 10
Analytical method of fractional sample period synchronisation for digital predistortion systems 数字预失真系统分数阶采样周期同步分析方法
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-19 DOI: 10.1109/RADIOELEK.2017.7937603
Jan Král, T. Gotthans, Michal Harvanek
{"title":"Analytical method of fractional sample period synchronisation for digital predistortion systems","authors":"Jan Král, T. Gotthans, Michal Harvanek","doi":"10.1109/RADIOELEK.2017.7937603","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937603","url":null,"abstract":"As the data throughput is still increased in the wireless communication systems, it is required to efficiently utilise the radio frequency spectrum which usually requires linear transmitters. Consequently methods as a digital predistortion (DPD) are developed to linearise nonlinear power amplifiers. To extract precise parameters for the DPD it is essential to finely synchronise measured feedback signal with the known transmitted signal. In this paper we propose an analytical method for the fractional sample period time synchronisation suitable for DPD signals. Finally benefits of the proposed method are presented on results of its usage for the DPD linearisation using a measurement test-bed.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131891035","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
Digital triangular wave quadrature oscillator 数字三角波正交振荡器
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-19 DOI: 10.1109/RADIOELEK.2017.7937578
M. Stork
{"title":"Digital triangular wave quadrature oscillator","authors":"M. Stork","doi":"10.1109/RADIOELEK.2017.7937578","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937578","url":null,"abstract":"Digital oscillators are a useful electronic system that can be used for different applications. Usually the frequency and amplitude stability is important. There are oscillators with different type of output signal e.g. sinusoidal, square etc. Some of them needs floating point multiply or look-up table etc. In this paper the digital quadrature oscillator with triangular output signal and amplitude stabilization is described. The quadrature output can be relevant for some applications. The output signal amplitude control is derived from state space equations. Moreover it is shown that for some values of control parameters behavior of the oscillator is chaotic.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131136675","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
BLE device indoor localization based on RSS fingerprinting mapped by propagation modes 基于传播模式映射RSS指纹的BLE设备室内定位
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-19 DOI: 10.1109/RADIOELEK.2017.7937584
J. Pelant, Zdenek Tlamsa, Vlastimil Benes, L. Polak, O. Kaller, L. Bolecek, Jan Kufa, J. Sebesta, T. Kratochvil
{"title":"BLE device indoor localization based on RSS fingerprinting mapped by propagation modes","authors":"J. Pelant, Zdenek Tlamsa, Vlastimil Benes, L. Polak, O. Kaller, L. Bolecek, Jan Kufa, J. Sebesta, T. Kratochvil","doi":"10.1109/RADIOELEK.2017.7937584","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937584","url":null,"abstract":"Nowadays, Bluetooth Low Energy (BLE) technology has a great attention in the field of wireless localization techniques, especially in the case of indoor scenarios. Study presented in this paper explores BLE localization performance in indoor scenarios based on a received signal strength (RSS). Firstly, we present a Ray-Launching based application to emulate BLE radio frequency (RF) signal propagation in the office environment. Secondly, an appropriate measurement workplace and its setup is proposed to measure RSS values. Obtained results are used to create an RSS-fingerprinting map. Furthermore, accuracy of position determination is calculated and evaluated. Results show advantage of BLE technology for indoor localization purposes (without calibration measurement). However, its performance highly depends on the number of considered BLE nodes and on applied evaluation method (e.g. number of considered sectors).","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129347661","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: 37
Higher order differentiator block for synthesis of controllable frequency dependent elements 用于合成可控频率相关元件的高阶微分器块
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937587
Ondrej Domansky, R. Sotner, J. Petrzela, L. Langhammer, T. Dostál
{"title":"Higher order differentiator block for synthesis of controllable frequency dependent elements","authors":"Ondrej Domansky, R. Sotner, J. Petrzela, L. Langhammer, T. Dostál","doi":"10.1109/RADIOELEK.2017.7937587","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937587","url":null,"abstract":"This paper presents structure of generally nth-order differentiator transfer block serving for purpose of integer order or fractional order immittance (impedance) synthesis. Presented structure of the differentiator is based on electronically controllable current conveyors (ECCIIs), current conveyor of second generation (CCII) and electronically controllable gain amplifier (VGA). This structure was applied as example of 3rd order differentiator and frequency dependent negative resistors (FDNRs) of integer (as well as fractional) order. Proposed applications offer electronic controllability of time constant, magnitude value and reconfigurability of impedance character (between positive and negative). PSpice simulations were performed in order to verify presented concepts.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"282 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114175662","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: 3
Wavelet significance testing with respect to GWN background: Monte Carlo simulation usage 关于GWN背景的小波显著性检验:蒙特卡罗模拟使用
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937593
E. Klejmova, T. Malach, J. Poměnková
{"title":"Wavelet significance testing with respect to GWN background: Monte Carlo simulation usage","authors":"E. Klejmova, T. Malach, J. Poměnková","doi":"10.1109/RADIOELEK.2017.7937593","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937593","url":null,"abstract":"The paper deals with significance testing of wavelet coefficients. We investigate the test of wavelet power spectrum with respect to the Gaussian white noise background spectrum from two perspectives of calculating significance level: with the use of χ2 distribution and with the use of Monte Carlo simulation. Our experiment is performed on a special kind of synthetic signal in which the frequency component is changing during time. We investigate the level of variance σ2 of the signal and the significance risk α. We describe the advantages and disadvantages of both approaches and formulate recommendations for using time-frequency testing.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"43 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114733758","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: 3
Design efficient schemes of applied algorithms parallelization based on semantic Petri-Markov net 设计基于语义Petri-Markov网络的高效应用算法并行化方案
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7936650
A. Ivutin, A. Troshina, V. Kotov
{"title":"Design efficient schemes of applied algorithms parallelization based on semantic Petri-Markov net","authors":"A. Ivutin, A. Troshina, V. Kotov","doi":"10.1109/RADIOELEK.2017.7936650","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7936650","url":null,"abstract":"The article discusses the possibility of the use of mathematical apparatus of semantic Petri-Markov nets for simulation and evaluation of parallel algorithms for computing the orthogonal transformation algorithms based on the discrete Fourier transform for two-dimensional images.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126366636","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
Webalyt: Open web analytics platform Webalyt:开放的网络分析平台
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937605
Lukás Cegan, Petr Filip
{"title":"Webalyt: Open web analytics platform","authors":"Lukás Cegan, Petr Filip","doi":"10.1109/RADIOELEK.2017.7937605","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937605","url":null,"abstract":"Web analytics tools offer important support for better recognition of the web user's behavior, identify bottlenecks and errors in user interface design, measure performance of web environment, monitor website availability or recommend appropriate website content. These tools are based on tracking techniques and sophisticated algorithms that process and evaluate large volumes of captured data. In this paper, we propose a new open web analytics platform called Webalyt that is designed with regard to ensuring availability and reliability under high traffic. A presented platform is formed by interconnected components, which apart from providing the basic functionality of tracking systems, also features advanced functionality for processing real-time data which is needed for recommendation systems. Furthermore, the platform has a scanning robot to search for information about users of third-party applications and marketplace for data interchange between trading partners. The platform is an open source with documented APIs for the development of expansion modules.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125944217","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
Special electronically reconfigurable lossy/lossless integrator in application of functional generator 特殊的电子可重构有损/无损积分器在函数发生器中的应用
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937595
R. Sotner, J. Petrzela, J. Jerabek, Ondrej Domansky, L. Langhammer, T. Dostál
{"title":"Special electronically reconfigurable lossy/lossless integrator in application of functional generator","authors":"R. Sotner, J. Petrzela, J. Jerabek, Ondrej Domansky, L. Langhammer, T. Dostál","doi":"10.1109/RADIOELEK.2017.7937595","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937595","url":null,"abstract":"This paper deals with idea of an electronically reconfigurable integrator utilized in nonlinear application of functional generator and study of its features in this circuit. The integrator can be electronically readjusted to lossy and lossless type as well as this integrator also offers electronic tuning of time constant. Possibility of simple electronic reconfiguration provides generation of square wave and selection to generate triangular or exponential (relaxation) output waveforms in node of working capacitor. Intentions of synthesis and design were confirmed by PSpice simulations.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127442282","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: 8
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