2016 International Conference on Signals and Electronic Systems (ICSES)最新文献_第2页

Spectrum sensing for cognitive radio based on flexible RF filtering 基于柔性射频滤波的认知无线电频谱感知

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593865

J. Dabrowski, Fahad Qazi

{"title":"Spectrum sensing for cognitive radio based on flexible RF filtering","authors":"J. Dabrowski, Fahad Qazi","doi":"10.1109/ICSES.2016.7593865","DOIUrl":"https://doi.org/10.1109/ICSES.2016.7593865","url":null,"abstract":"In this paper we investigate a spectrum sensing technique suitable for cognitive radio (CR) considered a means to mitigate congestion in the future multiple access communication systems. The ultimate objective is opportunistic use of unoccupied frequency bands called spectrum holes or white spaces, which belong to another system. For this purpose, first, we identify the spectrum sensor (SS) nonlinearities and scan the available spectrum in wideband mode where the primary task is to identify strong interference. Next, by a complementary analysis we pick up channels which are likely to be spectrum holes. In the second stage the SS is tuned to a selected sub-band by making use of a built-in flexible RF filter which largely attenuates interference and the related intermodulation distortions (IMD). The scan process carried out in this stage is aimed at detection of a vacant channel, i.e. containing only noise that must be distinguished from a possible weak signal that usually requires a significant computation overhead, but as the scan is narrowband and the S/N ratio can be high, the related overhead is largely reduced compared to the wideband sensing approach. The strength of this technique is in the flexible RF filter eliminating IMD which typically tend to obscure the spectrum holes.","PeriodicalId":360432,"journal":{"name":"2016 International Conference on Signals and Electronic Systems (ICSES)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131486028","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

The multifunctional programmable multiplexer of potential signals of sensors 传感器电位信号的多功能可编程多路复用器

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593863

N. Prokopenko, N. Butyrlagin, A. Bugakova, I. Pakhomov

{"title":"The multifunctional programmable multiplexer of potential signals of sensors","authors":"N. Prokopenko, N. Butyrlagin, A. Bugakova, I. Pakhomov","doi":"10.1109/ICSES.2016.7593863","DOIUrl":"https://doi.org/10.1109/ICSES.2016.7593863","url":null,"abstract":"The article suggests an architecture of the analog signals multiplexer (AM), realized on the base of multichannel differential difference op amp (DDA) with N (N=2, 3...) input deferential stages (DSs). Each of DSs is transferred to the working conditions or to the current saving mode by the digital signal from the corresponding RS-trigger. The state pre-setting of AM RS-triggers determines the main operating conditions of the multiplexer. The considered AM is a programmable multifunctional analog-digital processor. It provides multiplexing of the input differential voltages; noninverting multiplexing of the input nondifferential voltages; inverting multiplexing of the input nondifferential voltages; multiplexing of the input differential and nondifferential signals; algebraic summation of the chosen differential and nondifferential signals. The above-mentioned operating conditions of AM are formed due to the state pre-setting of the corresponding RS-triggers (or other memory elements), determining the operating conditions of the differential stages of DDAs. The results of computer simulation of AM are given in the mode of analog signal adder.","PeriodicalId":360432,"journal":{"name":"2016 International Conference on Signals and Electronic Systems (ICSES)","volume":"275 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133865209","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

FPGA-based two-processor CPU for PLC 基于fpga的双处理器CPU用于PLC

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593860

M. Chmiel, Wojciech Kloska, D. Polok, J. Mocha

{"title":"FPGA-based two-processor CPU for PLC","authors":"M. Chmiel, Wojciech Kloska, D. Polok, J. Mocha","doi":"10.1109/ICSES.2016.7593860","DOIUrl":"https://doi.org/10.1109/ICSES.2016.7593860","url":null,"abstract":"The paper reveals a two-processor Central Processing Unit (CPU) designed for Programmable Logic Controllers (PLC). The CPU is made up of a 1-bit (bit-type) processor and a 32-bit (word-type) processor. The both processors are operated totally independently from one another and information between them is exchanged via a exchange memory module. The 1-bit processor collaborates with edge detectors whilst the 32-bit processor is dedicated for implementation of timers and counters as well as enables execution of arithmetic operations on 32-bit integers and floating point variables. The both processors have been developed as specialized structures capable of executing control routines developed in the Instruction List (IL) programming language in line with requirements of the EN 61131-3 standard. The study presents a new approach to development of the exchange memory module and edge detectors as well as implementation of timers and counters. It is the approach that combines both software and hardware solutions, which makes them more efficient in terms of time performance as compared to already known solutions. Finally the CPU was designed with use of the hardware description language and then implemented in FPGA resources. This paper discloses results of the synthesis and execution times achieved for both individual instructions and benchmarks routines running on the newly designed CPU. The accomplished results make it possible to conclude that the CPU can be considered as an alternative solution to other units available from the market whilst the capability to execute algorithms developed in strict conformity to EN 61131-3 standard is its advantage.","PeriodicalId":360432,"journal":{"name":"2016 International Conference on Signals and Electronic Systems (ICSES)","volume":"2007 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123770687","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

Fully differential sigma-delta modulator structure for current-mode sensors 电流模式传感器的全差分σ - δ调制器结构

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593816

P. Sniatala, A. Handkiewicz, J. Goes, N. Paulino, J. Oliveira

引用次数: 3

A new idea of effective cooling of integrated circuits 一种有效冷却集成电路的新思路

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593847

A. Samake, Piotr Kocanda, A. Kos

引用次数: 6

Zero level of BiJFet-differential difference operational amplifiers and methods of its decrease in conditions of low temperatures and radiation effect bijfet差分运算放大器的零电平及其在低温和辐射效应条件下的降低方法

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593836

N. Prokopenko, I. Pakhomov, A. Bugakova, N. Butyrlagin

引用次数: 3

Cancellation of common-mode output signal in Class-BD audio amplifiers bd类音频放大器中共模输出信号的消除

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593844

J. Jasielski, W. Kołodziejski, S. Kuta

{"title":"Cancellation of common-mode output signal in Class-BD audio amplifiers","authors":"J. Jasielski, W. Kołodziejski, S. Kuta","doi":"10.1109/ICSES.2016.7593844","DOIUrl":"https://doi.org/10.1109/ICSES.2016.7593844","url":null,"abstract":"In the paper new topologies of the Class-BD amplifiers with Common-Mode (CM) free outputs have been presented. They are composed of the typical H-bridge output stage with four MOSFETs controlled by the optimal NBDD PWM signals and two additional switches separating the H-bridge from the power supply during the time intervals in which either high-side or low-side MOSFETs of the H-bridge are closed at the same time. The proposed amplifiers have been compared to the Class-BD configuration using the optimal NBDD modulation with respect to audio performance of the differential and CM outputs. Experimental models of the presented in the paper Class-BD audio amplifiers have been realized using digital audio MOSFETs IRF6775MTRPbF, single-output gate drivers with self-boost charge pump bias supply and with capacitor-based signal isolation for floating single-output gate drivers. Intensive SPICE simulations of the real output stage circuits of the proposed Class-BD amplifiers have pointed out that proposed new configurations have similar audio performance as the prototype using optimal NBDD modulation, besides keep the CM outputs constant, thereby removing a major contributor to radiated emissions.","PeriodicalId":360432,"journal":{"name":"2016 International Conference on Signals and Electronic Systems (ICSES)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125018962","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

Design of the mutually cancelling narrow passband and stopband filters — A case study 窄通带和阻带相互抵消滤波器的设计-一个案例研究

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593820

P. Korohoda, R. Rumian

引用次数: 2

Wavelet detectors for extraction of characteristic features of induction motor rotor faults 小波检测器在感应电机转子故障特征提取中的应用

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593853

M. Zajac, M. Sułowicz

{"title":"Wavelet detectors for extraction of characteristic features of induction motor rotor faults","authors":"M. Zajac, M. Sułowicz","doi":"10.1109/ICSES.2016.7593853","DOIUrl":"https://doi.org/10.1109/ICSES.2016.7593853","url":null,"abstract":"The paper describes the issue of the generation of low bandwidth detection wavelet filters for the purpose of induction machines diagnostics. The solution for this problem should be characterized by good resolution both in frequency and in time domain - this is because sudden and very short lasting load changes or sudden changes of control signals dictated by technology demands, cause effects in currents, voltages, vibrations of others diagnostic signal of damage machines which are of short duration. In the time domain, these effects are similar to the effects of variations of machine parameters or variation of supply system parameters which impede or even prevent an the assessment of the machine's condition. In the frequency domain, a non-stationary signal from the machine or the inverter's transient state usually becomes fuzzy in the spectrum. The approach proposed by the authors is based on time-frequency analysis of signals with non-parametric analysis of the faults' identification. Wavelet decomposition has been used, with mother wavelet active generation and choosing the optimal level of decomposition. It has been proven that a proper selection of mother wavelet for a particular signal corresponding to a specific machine's fault increases the effectiveness of fault detection. Inappropriate choice of a mother wavelet and decomposition level results in fuzzification of the spectrum or can cause its nonlinear deformation, which impedes or even prevents achieving a proper diagnosis.","PeriodicalId":360432,"journal":{"name":"2016 International Conference on Signals and Electronic Systems (ICSES)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122202460","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

Recovery synchronization in ANS-DM demodulator ANS-DM解调器中的恢复同步

2016 International Conference on Signals and Electronic Systems (ICSES) Pub Date : 2016-09-01 DOI: 10.1109/ICSES.2016.7593823

J. Kołodziej, J. Stepien, R. Golanski, W. Machowski, J. Godek

引用次数: 0