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Improved linearity CMOS active resistor structure 改进的线性CMOS有源电阻结构
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625244
C. Popa
{"title":"Improved linearity CMOS active resistor structure","authors":"C. Popa","doi":"10.1109/EUROCON.2013.6625244","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625244","url":null,"abstract":"Original low-power low-voltage active resistor structure with improved performances will be presented. The linearity is strongly increased by implementing an original technique, using a proper current biasing of the differential core. The structures are implemented in 0.35μm CMOS technology and are supplied at ±3V. The circuits present a very good linearity (in the worst case, THD <;0.4%), correlated with an extended range of the input voltage (at least ±0.5V). The tuning range of the active resistors is about hundreds KΩ - MΩ.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123359631","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
The technique of dynamic binary analysis and its application in the information security sphere 动态二进制分析技术及其在信息安全领域中的应用
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6624963
M. Shudrak, V. Zolotarev
{"title":"The technique of dynamic binary analysis and its application in the information security sphere","authors":"M. Shudrak, V. Zolotarev","doi":"10.1109/EUROCON.2013.6624963","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6624963","url":null,"abstract":"The article describes static and dynamic analysis techniques and its applicability in information security problems such as software protection against unauthorized research. The basic idea of the article is that techniques of dynamic and static analysis must be used in combination with each other to increase the effectiveness of binary code analysis. In the article authors make contributions in binary code decompilation and dynamic execution analysis techniques. The results are applied to the problem of software protection against unauthorized reverse engineering. Authors used analysis of the basic program control flow algorithm to obfuscate the program and protect it against research.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124481858","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
Evaluating stray current from DC electrified transit systems with lumped parameter and multi-layer soil models 基于集总参数和多层土壤模型的直流输电系统杂散电流评估
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625131
Fabio Fichera, A. Mariscotti, A. Ogunsola
{"title":"Evaluating stray current from DC electrified transit systems with lumped parameter and multi-layer soil models","authors":"Fabio Fichera, A. Mariscotti, A. Ogunsola","doi":"10.1109/EUROCON.2013.6625131","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625131","url":null,"abstract":"DC electrified traction systems are a potential source of stray current, that may corrode both internal and external structures and installations. The stray current intensity depends on several factors (traction current, rail insulation, concrete mat and piers resistance), that are accounted for in the proposed model. Moreover, the effect of a uniform or multi-layer soil model is considered, showing the differences and the impact on the countermeasures with respect to a uniform soil model simplifying approach.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125072468","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: 21
A new approach for spectrum sensing in wideband 一种宽带频谱传感的新方法
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6624976
Liudas Stasionis, A. Serackis
{"title":"A new approach for spectrum sensing in wideband","authors":"Liudas Stasionis, A. Serackis","doi":"10.1109/EUROCON.2013.6624976","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6624976","url":null,"abstract":"A new algorithm of the spectrum sensing is proposed in this paper. The spectrum sensing methods presented in this paper are optimised to implement these in FPGA based embedded systems. The low power and highly parallelised architecture of FPGA requires low complexity in implementation of separate processing units - spectrum sensors (SpS). The widely used detection methods, based on analysis of signal spectrum energy and standard deviation are integrated in proposed spectrum analysis algorithm for cognitive radio spectrum sensing applications. The experimental investigation of proposed algorithm is performed in simulated and real RF environments. It is showed that proposed algorithm increase the spectrum sensing efficiency and minimise the miss-detection of licensed users to 12 % using only the energy detector in proposed algorithm and 5% additionally adding the standard deviation based spectrum sensing. Three channel verification techniques with proposed spectrum sensors were tested during our investigation. The Forward Consecutive Mean Excision (FCME) based technique showed the highest accuracy in channel verification task.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121705472","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: 6
An inverter-based 6-bit pipelined ADC with low power consumption 基于反相器的6位流水线ADC，功耗低
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625247
I. Piatak, D. Morozov, J. Hauer
{"title":"An inverter-based 6-bit pipelined ADC with low power consumption","authors":"I. Piatak, D. Morozov, J. Hauer","doi":"10.1109/EUROCON.2013.6625247","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625247","url":null,"abstract":"A 6-bit pipelined analog-to-digital converter (ADC) with low power consumption has been designed. Inverter-based comparators have been used. To provide 6 bits output code 2 stages of pipeline with resolution of 3 bits have been used. In each stage digital-to-analog converter (DAC) and amplifier were implemented without operational amplifiers (Op-amps). Cascode current mirrors with weighted currents have been used to enhance sampling rate. Thus, the results of computer simulation show that ADC achieves 200 Ms/s sampling rate and 1.87 mW power consumption (at ±0,9 V supply voltage). Reported DNL and INL are 0.67 LSB and 1.05 LSB respectively, SNDR and SFDR are 29.7 dB and 33.5 dB respectively, ENOB is 4.64 bit. Inverter-based comparators with reduced influence of manufacturing process and temperature variations were designed. Test chip for 2 bit stage of pipelined ADC was implemented using 180 nm mixed-mode CMOS UMC technology. The stage occupies 0.0026 mm2. Sampling rate is 500 Ms/s, power consumption is approximately. 970 uW.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"246 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121075511","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
Design of human tracking robot utilizing pyroelectric sensor and analogue circuitry 利用热释电传感器和模拟电路的人体跟踪机器人设计
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625242
L. Adrian, L. Ribickis
{"title":"Design of human tracking robot utilizing pyroelectric sensor and analogue circuitry","authors":"L. Adrian, L. Ribickis","doi":"10.1109/EUROCON.2013.6625242","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625242","url":null,"abstract":"A tracked crawler robot using body heat detection and a purpose built analogue tracking circuit is designed in this work. The infrared detection module consists of a single dual element pyroelectric infrared sensor. The drive and steering control system is designed using a single chip 74HCXX Quad 2-input NAND gate as the logic controller and providing constant forward propulsion whilst in real time adjusting to the subject's direction. Automatic tracking of animal or human subjects is the sole purpose of the design. The range has been limited to two meters, with a maximum range of five meters. Modification of the pyroelectric sensor enables detection of both left and right movement. The robots ability to follow human and animal motion has been achieved. Visually observed results show the robot is able to drive, turn and detect human and animal motion and can work reliably. The design is able to be utilized using a microprocessor or as a highly responsive analogue unit making it both adaptive and flexible.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122784006","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
Methods for simulation of the wireless propagation channel for DAB/DAB+/DMB-SDR-receivers DAB/DAB+/ dmb - sdr接收机无线传播信道的仿真方法
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6624978
S. Baumgärtner, G. Hirtz, André Apitzsch
{"title":"Methods for simulation of the wireless propagation channel for DAB/DAB+/DMB-SDR-receivers","authors":"S. Baumgärtner, G. Hirtz, André Apitzsch","doi":"10.1109/EUROCON.2013.6624978","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6624978","url":null,"abstract":"In this paper, fundamental methods are proposed to model the multipath power-delay profile of frequency selective wireless channels with the focus on Digital Audio Broadcasting (DAB/DAB+/DMB). Beside the well known specifications COST 207 [1] and EN 50248 [2], there exist additional channel profiles for hilly regions with longer echoes especially for DAB, which are not covered in this two standards. The proposed methods convert these measured (continuous) power-delay profiles to discrete parameters (average path delay and path gain) of a tapped-delay line channel model to simulate the complete transmission channel of a DAB system. Beside the statistical procedure via Monte Carlo simulation [3] it is another deterministic and computationally efficient method to simulate the wireless propagation channel especially for DAB. The performance of the proposed algorithms is investigated with respect to the frequency correlation function (FCF), average path delay and delay spread. The method found to perform best is the so called Lp-norm method (LPNM).","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122788492","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
Robust geometrical-based lip-reading using Hidden Markov models 基于隐马尔可夫模型的鲁棒几何唇读
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625256
M. Z. Ibrahim, D. Mulvaney
{"title":"Robust geometrical-based lip-reading using Hidden Markov models","authors":"M. Z. Ibrahim, D. Mulvaney","doi":"10.1109/EUROCON.2013.6625256","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625256","url":null,"abstract":"Lip reading is a process used to recognize speech from the viewed physical movements of the lips. In this paper, we present a new automatic lip-reading system that uses geometrical information extracted from video sequences in the classification of dynamic lip movements and implemented in four variants of Hidden Markov Models. In the recognition of the English digits 0 to 9 as spoken by the subjects available in the CUAVE database, the proposed system is able to produce a word recognition performance of up to 68%, a result better than that obtained using a conventional appearance-based Discrete Cosine Transform technique. The two approaches are also compared when operating under simulated changes in environment conditions that arise from head movements and alterations in image illumination. The performance of the appearance-based approach was adversely affected by such rotational and brightness changes, yet the performance of the geometrical-based method remained consistent, demonstrating its potential to be effective as part of a multimodal speech recognition system for use in noisy environments.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125360617","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: 11
Adaptive recurrent neuro-fuzzy control of the complex drive system 复杂驱动系统的自适应递归神经模糊控制
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625243
Sebastian Knychas, K. Szabat
{"title":"Adaptive recurrent neuro-fuzzy control of the complex drive system","authors":"Sebastian Knychas, K. Szabat","doi":"10.1109/EUROCON.2013.6625243","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625243","url":null,"abstract":"In the paper issues related to the control of the drive system with changeable parameters are presented. The adaptive MRAS-base control structure with a retunable neuro-fuzzy controller is applied. The architecture of the fuzzy sets and recurrent feedbacks are described. The main point of the work is a comparative analysis of the influence of the recurrent feedback on the properties of the control structure. The obtained results have been compared with the classical Mamdani and TSK systems. Selected simulation results are included in the paper as well as some experimental tests that confirm the theoretical investigations.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"448 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125774263","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
Detecting user dissatisfaction from passive monitoring 从被动监控中发现用户不满
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6624979
Å. Arvidsson, Y. Zhang, N. Beheshti
{"title":"Detecting user dissatisfaction from passive monitoring","authors":"Å. Arvidsson, Y. Zhang, N. Beheshti","doi":"10.1109/EUROCON.2013.6624979","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6624979","url":null,"abstract":"In an increasingly competitive environment it is more important than ever for operators to keep their end users satisfied. User satisfaction is often characterised in terms of Quality of Experience (QoE), a subjective metric with multiple dimensions such as expectations, content, terminal, environment, cost and performance. QoE is typically quantified as MOS, mean opinion score, which is obtained by averaging the ranks of a number of voluntary users for controlled combinations content/terminals/performance etc. While this approach has many advantages, there are also a number of difficulties such as representativeness (the number of users as well as the number of objects and devices all have to be kept small); validity (the results may be biased by the situation, the setting, the renumeration and so on); and applicability (it is not clear how different numbers map to notions such as “acceptable” or “unacceptable” and operators alone cannot do very much about factors such as content). We thus investigate the possibilities of detecting user opinions in the above, simplified, terms and from the network itself; with actual expectations, content, terminals, environments, costs and performance for virtually all users all the time. To this end we revisit the earlier suggestion that user opinions be reflected in their behaviour such that poor performance may result in interrupted requests. These works have, however, considered single flows hence we extend that idea to web pages which are groups of flows. In this paper we present our methods to group flows, interpret users, and characterise performance and we make a first assessment of the correlations between web page interruptions and network performance characteristics.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129688028","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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