发布求助
文献互助 智能选刊 最新文献

2007 International Conference on Electrical Engineering最新文献

筛选
英文 中文
Multicarrier Interleave Division Multiple Access Communication with Adaptive Subchannel Allocation 自适应子信道分配的多载波交错分多址通信
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287312
H. ur Rehman, I. Zaka, M. Naeem, S.I. Shah
{"title":"Multicarrier Interleave Division Multiple Access Communication with Adaptive Subchannel Allocation","authors":"H. ur Rehman, I. Zaka, M. Naeem, S.I. Shah","doi":"10.1109/ICEE.2007.4287312","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287312","url":null,"abstract":"A low complexity multicarrier interleave division multiple access (MC-IDMA) system operating in multipath fading channels with adaptive subchannel allocation for uplink transmission is described. Instead of transmitting chips over a number of subchannels uniformly, chips are transmitted over subchannels which have largest fading amplitudes among all the subchannels. Concatenated Zigzag codes are used as Forward Error Correcting Codes (FEC). Simulation results show that the adaptive subchannel allocation scheme used in conventional MC-IDMA system greatly improves the bit error rate (BER) performance of the system.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131568599","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
Bayesian Learning for Software Architecture Recovery 软件架构恢复的贝叶斯学习
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287309
O. Maqbool, H. Babri
{"title":"Bayesian Learning for Software Architecture Recovery","authors":"O. Maqbool, H. Babri","doi":"10.1109/ICEE.2007.4287309","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287309","url":null,"abstract":"Understanding a software system at the architectural level is especially important when the system is to be adapted to meet changing requirements. However, architectural documentation is often unavailable or out-of-date. In this paper, we explore the use of Bayesian learning methods for automatic recovery of a software system's architecture, given incomplete or out-of-date documentation. We employ software modules with known classifications to train the Naive Bayes Classifier. We then use the classifier to place new instances, i.e. new software modules, into appropriate sub-systems. We evaluate the performance of the classifier by conducting experiments on a software system, and compare the results obtained with a manually prepared architecture. We present an analysis of the results, and also discuss the assumptions under which the results are expected to be meaningful.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125678794","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: 14
A Current Independent Synchronized Phasor Measurement Based Method for Fault Location on Transmission Lines 基于电流独立同步相量测量的输电线路故障定位方法
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287336
K. G. Firouzjah, A. Sheikholeslami
{"title":"A Current Independent Synchronized Phasor Measurement Based Method for Fault Location on Transmission Lines","authors":"K. G. Firouzjah, A. Sheikholeslami","doi":"10.1109/ICEE.2007.4287336","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287336","url":null,"abstract":"This paper presents a new fault location technique based on synchronized phasor measurement. The main objective of presented technique is to rewrite the system equations in order to eliminate the current transformer CT requirements and achieve current independent equations. Theoretical analysis and simulation result indicate that accuracy of fault estimation is fault type independent and the difference between actual and estimated fault point distance is less than 0.6 percent of transmission line length in all case which is more accurate than other fault location techniques that presented in literature. EMTP and MATLAB simulation results have been performed to describe and validate proposed technique.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130379281","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
New Diffusion Based Image Denoising Techniques; Evaluations and Comparisons 基于扩散的图像去噪新技术评估与比较
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287328
H. M. Naimi, E.N. Nejad, H. Hassanpour
{"title":"New Diffusion Based Image Denoising Techniques; Evaluations and Comparisons","authors":"H. M. Naimi, E.N. Nejad, H. Hassanpour","doi":"10.1109/ICEE.2007.4287328","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287328","url":null,"abstract":"This paper introduces three new diffusion based methods for image denoising in which three new neighboring structure are used. These structures are aimed to consider the gradual nature of edges, which are preserved in the diffusion based methods. Different experiments with different conditions were done to evaluate the methods and also compare with the two well known denoising algorithms: wiener and median filter. For reasonable evaluation and comparison, the methods are compared using different performance measures; the results express the considerable superiority of the proposed methods.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115130749","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
A Robust Routing Strategy for Wireless Sensor Networks 无线传感器网络的鲁棒路由策略
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287337
N. Khan, Zubair Khalid, G. Ahmed, Muhammad Yasin
{"title":"A Robust Routing Strategy for Wireless Sensor Networks","authors":"N. Khan, Zubair Khalid, G. Ahmed, Muhammad Yasin","doi":"10.1109/ICEE.2007.4287337","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287337","url":null,"abstract":"This paper investigates a routing mechanism that generates routing paths dynamically for a network of wireless sensor nodes. The strategy Is based on the logical network abridgement (LNA) scheme designed for the adhoc networks in the literature. Sensor networks are distinguished from the traditional networks by characteristics such as deeply embedded routers, highly dynamic networks, resource constrained nodes, frequent topology change and unreliable and asymmetric links. Although there are some previous methods for adaptive routing in these networks, but not much work has been done so far in this direction. In this paper, we propose a simple, efficient and distributed routing scheme based on the logical network abridgement (LNA), which is used to measure the underlying path diversity and intrinsic network resiliency to congestion, failures and attacks. It works well in dynamic and realistic environment. Simulation results are given, which show that the strategy based LNA helps achieve the desired system performance under the dynamically changing network conditions.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133794966","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
New Three-Level Voltage Source Inverter with Different 25 Space Voltage Vectors 新型25空间电压矢量三电平电压源逆变器
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287282
M. H. Saied, M. Z. Mostafa, T. Abdel-Moneim, Hassan A. Yousef
{"title":"New Three-Level Voltage Source Inverter with Different 25 Space Voltage Vectors","authors":"M. H. Saied, M. Z. Mostafa, T. Abdel-Moneim, Hassan A. Yousef","doi":"10.1109/ICEE.2007.4287282","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287282","url":null,"abstract":"This paper presents a new switching strategy controlling a new three-level voltage source inverter, resulting in different 25 space voltage-vectors. The new inverter combines some desirable features of two and three-level inverters. The proposed open-leg switching strategy intentionally opens one of the three inverter-legs per-time, in a pre-planned sequence. Thus, the number of allowed states becomes 64 compared to 27 originally proposed by other modulation strategies. For a wye-connected load operating at low modulation index (M<0.5 p.u.), the output phase-voltage becomes a seven-level, 12-step waveform, instead of the 6-step one. Thus, tie total harmonic distortion is highly reduced. Three new conduction-modes are presented, each verifies a reduced common-mode-voltage time-variation (dv/dt), low third harmonic content, and reduced switching frequency harmonics. For higher modulation indexes, a 4th conduction mode is presented, eliminating the low frequency harmonics in the neutral-point current, consequently reducing the dc-link capacitors sizes, and cost. Analytical models, computer simulation results, and experimental verification are presented.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116032416","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 Downlink Tracking Algorithm by Adapting the Beamspace Weights of the Transmit Antenna 一种自适应发射天线波束空间权重的下行跟踪算法
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287349
S. Hussain, M. I. Sheikh
{"title":"A Downlink Tracking Algorithm by Adapting the Beamspace Weights of the Transmit Antenna","authors":"S. Hussain, M. I. Sheikh","doi":"10.1109/ICEE.2007.4287349","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287349","url":null,"abstract":"A simple gradient algorithm for adaptation of complex base band beamspace weights of the transmit antenna at the base station by feedback from the mobile is presented. In order to converge to the optimal beamspace weights this beamspace beamformer relies on a single feedback bit from the mobile user. Here the ingenious idea is that the feedback bit indicates which of the two normalized perturbed beamspace weights of the base station array delivers more power to the mobile. Utilizing this feedback, our algorithm at the base station updates the complex beam space weights of the transmit beamformer. It converges to the optimum beam space weights for a static channel, which is confirmed by simulations.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"24 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116315100","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
Rotor Position Detection in SRM Drive Utilizing Phase Shift Variations in a Formed Resonant Circuit 基于形成谐振电路相移变化的SRM驱动转子位置检测
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287308
A. Najafi, E. Afjei, H. Khalili
{"title":"Rotor Position Detection in SRM Drive Utilizing Phase Shift Variations in a Formed Resonant Circuit","authors":"A. Najafi, E. Afjei, H. Khalili","doi":"10.1109/ICEE.2007.4287308","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287308","url":null,"abstract":"In switched reluctance motors, each individual phase excitation must be synchronized with the rotor position which necessitates the need for a position sensing scheme. This paper presents a complete and novel method to indirectly detect the rotor position at standstill and also at low speeds in switched reluctance motor. The method utilizes current phase variation technique in conjunction with the use of resonant scheme. A circuit consists of an external resistance R, motor phase inductance, L (thetas), and an external capacitance, C is formed and fed by a sinusoidal voltage having the same resonant frequency as the circuit. The current flowing through the resistor has the same frequency as the input voltage but can have different phase shift when compared to the input voltage due to die variation of phase inductance, L(thetas) which is directly proportional to rotor position. The produced resistor voltage waveform is then compared to the input sinusoidal voltage waveform in order to obtain a pulse width proportional to the position of the rotor. The width of the pulse is determined accordance to the phase inductance which is directly proportional to the rotor position. Finally, the paper presents the results obtained which demonstrates the feasibility and practicability of the method and outlines the advantages of this method.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129854672","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
Elementary Fractional Dipole in Homogenous and Reciprocal Chiral Media 齐次和互反手性介质中的初等分数偶极子
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287342
M. Faryad, Q. Naqvi
{"title":"Elementary Fractional Dipole in Homogenous and Reciprocal Chiral Media","authors":"M. Faryad, Q. Naqvi","doi":"10.1109/ICEE.2007.4287342","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287342","url":null,"abstract":"We have determined the Held radiated from n fractional elementary current dipole. Fractional source may be regarded as intermediate between the electric and magnetic dipole. The fractional dipole source is located in homogeneous and reciprocal chiral medium.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"155 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122856171","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
A New Resonant Driver for Switched Reluctance Motor 一种新型开关磁阻电机谐振驱动器
2007 International Conference on Electrical Engineering Pub Date : 2007-04-11 DOI: 10.1109/ICEE.2007.4287304
M.M. Alaee, E. Afjei, S. Ataei
{"title":"A New Resonant Driver for Switched Reluctance Motor","authors":"M.M. Alaee, E. Afjei, S. Ataei","doi":"10.1109/ICEE.2007.4287304","DOIUrl":"https://doi.org/10.1109/ICEE.2007.4287304","url":null,"abstract":"The switched reluctance motor (SRM) drive is receiving increasing attentions from various researchers as well as industry as a viable candidate for adjustable speed and servo applications. Combining the unique features of an SRM with simple and efficient power converter that is uses, a superior motor drive system emerges which may be preferable for many applications compared to other AC or DC motor drive systems. although a number of converters have emerged over the years for SRM drives, but every single driver has its own advantages and drawbacks and there has always been a trade-off between gaining some of the advantages and losing some when a new drivers is offered. In this paper we present a new driver for switched reluctance motor. The driver features zero-current switching. It means all the switching operations are done when the phase current crosses the zero level, therefore it reduces the overall power loss in the switching process. Also provides faster rate of rise and fall of current which helps the motor to operate at higher speeds when the resonance phenomenon is employed. Keywords: Switched Reluctance Motor, Resonant Drive Circuit, SRM Drive, Resonant Driver.","PeriodicalId":291800,"journal":{"name":"2007 International Conference on Electrical Engineering","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115394801","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信