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Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)最新文献

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Applying cycle-based simulation technique to VITAL as a VHDL gate level standard 将基于周期的仿真技术应用于VITAL作为VHDL门电平标准
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933592
B. H. Yaran, Dara Rahmati, A. Zebardast
{"title":"Applying cycle-based simulation technique to VITAL as a VHDL gate level standard","authors":"B. H. Yaran, Dara Rahmati, A. Zebardast","doi":"10.1109/CCECE.2001.933592","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933592","url":null,"abstract":"Simulation engines are a major part of automatic hardware design process. On the other hand the size and complexity of designs and limitation of the speed of simulation engines leads to the advanced concepts in simulation acceleration and verification. In this paper we introduce an implementation of VITAL cycle-based simulator that uses potential abilities of VITAL standard for fast VHDL gate level simulation.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122217227","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
Nonlinear channel estimation using correlation properties of PN sequences 基于PN序列相关特性的非线性信道估计
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933729
Xavier N Fernando, A. Sesay
{"title":"Nonlinear channel estimation using correlation properties of PN sequences","authors":"Xavier N Fernando, A. Sesay","doi":"10.1109/CCECE.2001.933729","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933729","url":null,"abstract":"Nonlinear distortion of the radio-over-fiber (ROF) link and, multipath dispersion of the wireless link are the two major factors that limit the performance of a fiber based wireless system. This is especially true when the radio frequency is only a few GHz. The fact that both of these impairing factors are generally unknown, makes any equalization effort very difficult. In this paper, an algorithm that estimates both the nonlinear transfer function of the ROF link plus the impulse response of the wireless channel is described. Correlation properties of pseudonoise (PN) sequences are used for this estimation. This eases the implementation because, PN sequences are widely used in spread spectrum systems and their properties are well understood. An efficient, Vandermonde matrix approach is used to separate the Volterra kernels of the fiber-wireless channel which, eliminates the computation of higher order correlation functions.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131230708","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: 15
A progressive scheme for biomedical image compression using variable order wavelets transforms and HVS characteristics 一种利用变阶小波变换和HVS特性的生物医学图像渐进压缩方案
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933569
M. Bouziane, R. Noumeir, C. Gargour
{"title":"A progressive scheme for biomedical image compression using variable order wavelets transforms and HVS characteristics","authors":"M. Bouziane, R. Noumeir, C. Gargour","doi":"10.1109/CCECE.2001.933569","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933569","url":null,"abstract":"We propose a progressive compression scheme for medical images. Our approach is based on subband coding by wavelet filters and uses a quantification method based on the human vision characteristics. Each step of the proposed compression scheme has been optimized and results are presented for a CT brain image.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"28 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132531368","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
Performance analysis of wireless ATM/AAL2 over a burst error channel 突发错误信道下无线ATM/AAL2的性能分析
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933770
L. Villaseñor-González, S. Tsakiridou, L. Orozco-Barbosa, L. Lamont
{"title":"Performance analysis of wireless ATM/AAL2 over a burst error channel","authors":"L. Villaseñor-González, S. Tsakiridou, L. Orozco-Barbosa, L. Lamont","doi":"10.1109/CCECE.2001.933770","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933770","url":null,"abstract":"The growth in cellular networks has motivated research on broadband access technologies for the support of diverse services over wireless networks. Wireless asynchronous transfer mode (WATM) has been proposed as solution for next generation wireless and personal communication networks and ATM Adaptation Layer 2 (AAL2) has been identified suitable for the support of low data rate and delay sensitive voice traffic generated in cellular networks. We study the performance of AAL2 over a burst error wireless channel. Analytical expressions for performance measures of interest are derived for the Gilbert-Elliott (1960, 1963) channel and numerical results are presented to demonstrate the effect of burst errors on the AAL2 frame structure and the AAL2 performance.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133406819","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
Swarm intelligence for hybrid cost dispatch problem 混合成本调度问题的群智能
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933536
A. El-Gallad, M. El-Hawary, A. Sallam, A. Kalas
{"title":"Swarm intelligence for hybrid cost dispatch problem","authors":"A. El-Gallad, M. El-Hawary, A. Sallam, A. Kalas","doi":"10.1109/CCECE.2001.933536","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933536","url":null,"abstract":"The paper presents a modified particle swarm optimizer (PSO) to solve the economic power dispatch problem with piecewise quadratic cost function. Practically, operating conditions of many generating units require that the cost function be segmented as piecewise quadratic functions instead of using one convex function for each generator. The proposed technique is applied to a case study of multiple intersecting cost functions for each unit. Unlike the hierarchical method, the proposed algorithm finds combination of power generation that minimizes the total cost function while exactly satisfying the total demand.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133433530","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: 36
A review of current raw SAR data compression techniques 当前原始SAR数据压缩技术综述
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933565
El Boustuni, K., W. Kinsner
{"title":"A review of current raw SAR data compression techniques","authors":"El Boustuni, K., W. Kinsner","doi":"10.1109/CCECE.2001.933565","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933565","url":null,"abstract":"Synthetic aperture radar (SAR) is a sophisticated technique of all-weather radar imaging capable of producing fine detailed images from a moving platform. When such a radar is placed on-board a satellite, compression of the raw SAR signal is necessary to reduce the huge amount of collected data for the downlink to a ground station within the bandwidth constraints. This is further exasperated by new high resolution imaging radars currently in development capable of producing significantly more data. This paper presents a review of current raw SAR data compression techniques which are classified into three different categories according to the method of quantization, scalar or vector, and to the domain of compression.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131613048","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: 20
Two layers position control system of a manipulator using feed forward control 采用前馈控制的机械手两层位置控制系统
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933763
K. Faress, M. El-Hagry
{"title":"Two layers position control system of a manipulator using feed forward control","authors":"K. Faress, M. El-Hagry","doi":"10.1109/CCECE.2001.933763","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933763","url":null,"abstract":"In this paper, the authors propose a two layers position control system: the inner layer is a ready made sensorless vector controlled inverter; and the second layer is an external position controller which is realized either using analog or digital circuits through a microcomputer control system. The velocity feed forward path and a PI controller instead of P controller which acts on the tracking error of the position trajectory are used by the control algorithm. The actual position trajectory is sensed using an optical digital encoder. This system is reliable and not costly for using in upgrading the convential system. The minimum energy consumption speed trajectory and the corresponding position trajectory are followed. Experimental results are presented.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133868954","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 transmit-diversity coding framework for cellular systems 蜂窝系统的传输分集编码框架
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933669
M. Godbout, H. Leib
{"title":"A transmit-diversity coding framework for cellular systems","authors":"M. Godbout, H. Leib","doi":"10.1109/CCECE.2001.933669","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933669","url":null,"abstract":"Space-time (ST) coding is an efficient technique for combatting short-term fading in telecommunication systems with multiple transmit antennas. This paper presents a multi-dimensional framework for such a system that contrasts two approaches for assigning signal dimensions to antennas. With aggregate transmit antennas (ATA), a dimension is employed by all the antennas while in orthogonal transmit antennas (OTA), each dimension is employed by a single transmit antenna. We provide a diversity order analysis for repetition codes and Tarokh-Seshadri-Calderbank (see IEEE Transactions on Information Theory, vol.44, p.744-64, 1998) codes within our framework over a spatially uncorrelated, block-fading Rayleigh channel. Simulation results for repetition, TSC, and classical convolutional codes using both OTA and ATA transmission are presented. With ATA, classical convolutional codes perform comparably to the known TSC codes, while with OTA diversity gain is easier to obtain than with ATA. All the codes that were considered in this work with OTA show performance gains with respect to ATA.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128017010","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
Modelling of industrial loads for voltage stability studies in power systems 电力系统电压稳定性研究中的工业负荷建模
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933557
M. Merkle, A. Miri
{"title":"Modelling of industrial loads for voltage stability studies in power systems","authors":"M. Merkle, A. Miri","doi":"10.1109/CCECE.2001.933557","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933557","url":null,"abstract":"Voltage instability is a dynamic phenomenon and therefore requires dynamic representation of the power system components. Industrial loads contain a large fraction of induction machines. Several models of different complexity are available for the description of aggregate induction machines in voltage stability investigations. This study evaluates the dynamic performances of several reduced induction machine models in combination with the dynamics of a load tap changing transformer.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121438459","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
Reliable multicast transmissions using forward error correction and automatic retransmission requests 使用前向纠错和自动重传请求的可靠组播传输
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555) Pub Date : 2001-05-13 DOI: 10.1109/CCECE.2001.933603
B. Li
{"title":"Reliable multicast transmissions using forward error correction and automatic retransmission requests","authors":"B. Li","doi":"10.1109/CCECE.2001.933603","DOIUrl":"https://doi.org/10.1109/CCECE.2001.933603","url":null,"abstract":"Multicasting over a network allows a sender to distribute data to multiple receivers. The sender simply sends the data in question to a pre-determined multicast address, and all receivers interested in this data can listen for it. Multicasting is based on an unreliable transport. A data packet sent by the sender may or may not reach an interested receiver and packets received may be out of order. For some type applications, such as audio or video multicasting, this may be acceptable. However, for other type of applications, such as file distribution and monitoring, the loss of data is unacceptable. There are many ways to deal with providing reliable delivery of data in a multicasting environment. The simplest technique is for each receiver to send ACKs or NACKs to the sender regarding each packet it received or do not receive, causing the sender to retransmit any loss packets. Unfortunately, if there is large pool of receivers, these ACK/NACKs can easily overwhelm the sender causing a feedback implosion at the sender. We proposed a multicasting system based on a class of forward error correction (FEC) codes called Reed-Solomon codes to provide redundancy which may allow the receiver to re-construct lost packets based on received packets. In the event that the receiver does not have enough packets to re-construct lost packets, the receiver will ask the sender for some additional packets in order to re-construct all the source packets. This paper describes a design and implementation of a system that provides reliable multicasting based on forward error correction and automatic retransmission requests.","PeriodicalId":184523,"journal":{"name":"Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115707081","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
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