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2007 Canadian Conference on Electrical and Computer Engineering最新文献

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Multi-Branch Polynomial Model with Embedded Average Power Dependency for 3G RF Power Amplifiers 基于嵌入式平均功率依赖的3G射频功率放大器多分支多项式模型
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.209
O. Hammi, S. Boumaiza, F. Ghannouchi
{"title":"Multi-Branch Polynomial Model with Embedded Average Power Dependency for 3G RF Power Amplifiers","authors":"O. Hammi, S. Boumaiza, F. Ghannouchi","doi":"10.1109/CCECE.2007.209","DOIUrl":"https://doi.org/10.1109/CCECE.2007.209","url":null,"abstract":"In this paper, a study of the of multi-branch polynomial model performance for RF power amplifiers operating over a wide input power range is presented. For this purpose, a 100-watts peak power amplifier designed for 3G applications is characterized over a 12 dB average input power range. A multi-branch polynomial model is derived at each average power level. The models' accuracy in predicting the PA's output spectrum under average input power mismatch is evaluated. Then, the model's parameters variation versus the average input power is considered. It is shown that there is no straightforward analytical function that might take into account for the parameters variation with respect to the average input power level. Accordingly, a complexity reduced multi-branch model with embedded average power dependency is proposed. The model coefficients are stored into memory banks, and the adequate coefficients are loaded depending on the average input power level.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126266658","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
Applying Probabilistic Method in Determining the Number of Spare Transformers and Their Timing Requirements 应用概率方法确定备用变压器数量及其时序要求
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.41
W. Wangdee, Wenyuan Li, W. Shum, P. Choudhury
{"title":"Applying Probabilistic Method in Determining the Number of Spare Transformers and Their Timing Requirements","authors":"W. Wangdee, Wenyuan Li, W. Shum, P. Choudhury","doi":"10.1109/CCECE.2007.41","DOIUrl":"https://doi.org/10.1109/CCECE.2007.41","url":null,"abstract":"This paper presents a probabilistic approach to determining the number of spare transformers for a group of transformers and the timing requirement for each spare transformer to meet the specific reliability criterion. The historical reliability performance designated as system average interruption duration index (SAIDI) is used to establish the specified reliability criterion. The proposed method considers both repairable and aging failures of transformers. The aging failure model of transformers is incorporated in the analysis in order to practically account for the fact that the electric power system in North America is aging, and a considerable number of equipment are approaching their end of life. The 138/25 kV 25 MVA transformer group in the BCTC system, consisting of both fixed turn ratio and on-load tap changing transformers, is used for an illustration in the paper. The detailed analysis in determining the number of spare transformers and their timing requirements during a 10 year planning period is presented.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129855652","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
MEFiSTo Modeling and Analysis for Microwave Engineering Education 微波工程教学MEFiSTo建模与分析
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.208
P. So
{"title":"MEFiSTo Modeling and Analysis for Microwave Engineering Education","authors":"P. So","doi":"10.1109/CCECE.2007.208","DOIUrl":"https://doi.org/10.1109/CCECE.2007.208","url":null,"abstract":"Time-domain electromagnetic field solvers are invaluable tools for engineering education. This paper presents a sequence of MEFiSTo-3D NOVA numerical experiments that illustrates the fundamental of electromagnetic field theory as well as the unusual behaviour of metamaterial. The software package is free hence educators may freely adopt it in their course to stimulate active learning of electromagnetic theory via virtual electromagnetic experiments.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130097854","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
STFT-Based Segmentation in Model-Based Seizure Detection 基于stft的癫痫检测分割
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.187
R. Yadav, R. Agarwal, M. Swamy
{"title":"STFT-Based Segmentation in Model-Based Seizure Detection","authors":"R. Yadav, R. Agarwal, M. Swamy","doi":"10.1109/CCECE.2007.187","DOIUrl":"https://doi.org/10.1109/CCECE.2007.187","url":null,"abstract":"To aid the review of long-term electroencephalograph (EEG), it is necessary to develop automatic seizure detection methods. In the literature, numerous seizure detection methods based on parameterization of the EEG have been presented. Recently a new patient-specific model-based method using Statistically Optimal Null Filters (SONF) has been proposed for seizure detection [1], This method uses stationary segments of a template seizure to generate the necessary seizure model (basis functions) that is used for all subsequent seizure detections. In this approach, the necessary stationary segments within the template are manually identified based on the constancy of the dominant rhythm. The manual selection of stationary segments is cumbersome in practice. In this paper, we present short-time-Fourier-transform (STFT) based automatic segmentation of template seizure resulting in practically usable model-based seizure detection. To assess the performance of the proposed algorithm, a comparison with the visual (manual) method of epoch selection on simulated as well as on the template seizures of five different patients is done. The overall performance improvements are evident in terms of enhanced seizure detection sensitivity and reduced number of false positives.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129761133","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
Optimization of HW/SW Co-Design: Relevance to Configurable Processor and FPGA Technology 硬件/软件协同设计的优化:与可配置处理器和FPGA技术相关
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.423
S. Xu, H. Pollitt-Smith
{"title":"Optimization of HW/SW Co-Design: Relevance to Configurable Processor and FPGA Technology","authors":"S. Xu, H. Pollitt-Smith","doi":"10.1109/CCECE.2007.423","DOIUrl":"https://doi.org/10.1109/CCECE.2007.423","url":null,"abstract":"This paper presents a methodology for optimization of HW/SW co-design based on emerging configurable processor and FPGA technologies. This methodology is illustrated by the optimization of a discrete cosine transform (DCT) for image compression based on Tensilica's Xtensa LX core and Xilinx Virtex-II Pro device. The various optimization processes of a 2-D DCT transform, including adding different processor instruction sets onto the base processor to speedup software execution, are described. The results show a 26.76 times speed increase by adding a 4-way SIMD (single instruction multiple data) instruction with moderate hardware cost for a simple 2-D DCT implementation. The optimized 4-way SIMD processor is implemented on the FPGA board to verify the design, and shows a further significant speedup for on-board calculation compared to instruction-set simulation results. The HW vs. SW optimization strategy, speed and HW cost trade-offs, etc. are presented.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129766880","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
Performance of Weak Asymmetric MHPM Signals in Non-Gaussian Noise 弱非对称MHPM信号在非高斯噪声中的性能
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.225
M. Shah, R. Rao
{"title":"Performance of Weak Asymmetric MHPM Signals in Non-Gaussian Noise","authors":"M. Shah, R. Rao","doi":"10.1109/CCECE.2007.225","DOIUrl":"https://doi.org/10.1109/CCECE.2007.225","url":null,"abstract":"A locally optimum receiver structure is derived for coherent detection of Multi-H phase-coded modulation (MHPM), with asymmetric modulation parameters, signals in non-Gaussian noise. The receiver consists of a memoryless non-linearity, -d/dr ln pN(r), followed by a coherent average matched filter (AMF) for MHPM with asymmetric modulation parameters, where pN(r) denotes the first-order probability density of the noise. The limiting performance estimates of this receiver are derived and expressions for bit error rate (BER) are presented. It is observed that the BER is a function of: i) signal-to-noise ratio S; ii) the number of observation intervals n; iii) signal modulation parameters; and iv) the quantity L referred to as the asymptotic relative efficiency (ARE). Numerical results for BER performance of the locally optimum receiver are presented. Middleton's class A noise models is considered.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128502870","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
Controlled Micro-Stimulation for Peripheral Neural System Enhancement 外周神经系统增强的可控微刺激
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.113
B. Behroozan, B. Kaminska
{"title":"Controlled Micro-Stimulation for Peripheral Neural System Enhancement","authors":"B. Behroozan, B. Kaminska","doi":"10.1109/CCECE.2007.113","DOIUrl":"https://doi.org/10.1109/CCECE.2007.113","url":null,"abstract":"Falls are a leading cause of serious morbidity and mortality in the elderly. Previous research shows that one in three people over 65 will fall each year, and the ratio increases to one in two for people above 85. Patients with peripheral neuropathy are at risk of increasing falls twenty times more than ordinary old people. This paper introduces an innovative method to improve stability and reduce the chance of falling by mechanically and electrically stimulating the foot.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130556596","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
Software Costs and Schedule Estimations Based on the Work Coordination Laws 基于工作协调规律的软件成本与进度估算
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.323
Yingxu Wang, Jialin Shen
{"title":"Software Costs and Schedule Estimations Based on the Work Coordination Laws","authors":"Yingxu Wang, Jialin Shen","doi":"10.1109/CCECE.2007.323","DOIUrl":"https://doi.org/10.1109/CCECE.2007.323","url":null,"abstract":"In the study of abstract work coordination and organization, Wang finds a formal and quantitative relation among workload, time, and labor allocation known as the law of coordinative work organization and the law of the shortest duration of coordination projects. Wang's laws provide a formal explains for the mythical man-month. The laws reveal that for a given workload, there is an optimum labor allocation, which determines the shortest duration of the project. In this paper we demonstrate how the laws are applied in software engineering project organization. On the basis of Wang's laws, a formal economic model of software engineering cost (FEMSEC) is created for rational estimation of software engineering project costs, effort, and duration. A comparative case study between FEMSEC and COCOMO II is reported. A support tool for FEMSEC is under development that enables practitioners to apply the laws and to use the FEMSEC tool for rational software engineering project organization and estimation.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131099197","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
New Closed-Form Estimators for the Angle of Arrival and the Angular Spread of a Locally Scattered Source 局部散射源到达角和角扩展的新封闭估计
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.266
M. Souden, S. Affes, J. Benesty
{"title":"New Closed-Form Estimators for the Angle of Arrival and the Angular Spread of a Locally Scattered Source","authors":"M. Souden, S. Affes, J. Benesty","doi":"10.1109/CCECE.2007.266","DOIUrl":"https://doi.org/10.1109/CCECE.2007.266","url":null,"abstract":"We estimate the angular spread (AS) and the nominal angle of arrival (AoA) of a locally scattered source using a uniform linear array (ULA) of sensors. First, we use Taylor series expansions to transform this problem into the localization of two point sources as it has been proposed in the literature. Based on the resulting approximate form of the covariance matrix, we directly retrieve analytical expressions for the AS and the nominal AoA. Compared with earlier works, the proposed method does not require the knowledge of the angular distribution of the scattered source. Furthermore, it accurately determines the required parameters in a computationally very simple manner as illustrated by simulations.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129842485","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
Noise Analysis for UltraWideBand Low Noise Amplifiers 超宽带低噪声放大器的噪声分析
2007 Canadian Conference on Electrical and Computer Engineering Pub Date : 2007-04-22 DOI: 10.1109/CCECE.2007.281
M. Zargham, V. Gaudet
{"title":"Noise Analysis for UltraWideBand Low Noise Amplifiers","authors":"M. Zargham, V. Gaudet","doi":"10.1109/CCECE.2007.281","DOIUrl":"https://doi.org/10.1109/CCECE.2007.281","url":null,"abstract":"Noise performance is the most important property of any low noise amplifier. Different conventional cascode ultrawideband 3.1-10.6 GHz low noise amplifier (LNA) topologies have been studied and compared in terms of noise figure (NF). The effect of an inductive inner stage on noise has been discussed. A novel two by two linear correlated matrix has been assumed for deriving correlation impedances of the Noise Figure. All simulations are based on a typical 0.18-mum CMOS process.","PeriodicalId":183910,"journal":{"name":"2007 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115993766","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
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