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2009 Canadian Conference on Electrical and Computer Engineering最新文献

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Narrowband interference suppression method in Cognitive Ultra-wide Band Radio 认知超宽带无线电中的窄带干扰抑制方法
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090175
X. Ning, X. Sha, Lin Mei
{"title":"Narrowband interference suppression method in Cognitive Ultra-wide Band Radio","authors":"X. Ning, X. Sha, Lin Mei","doi":"10.1109/CCECE.2009.5090175","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090175","url":null,"abstract":"This paper investigates a novel narrowband interference (NBI) suppression method in Cognitive Ultra-wide Band (CUWB) Radio system. UWB signals and NBI are separated by Fractional Fourier Transform (FRFT) domain filters, and therefore an estimation of NBI can be obtained by utilizing inverse FRFT. The simulation results show that the UWB pulse waveform designed by Semi-definite Programming (SDP), which is a weighted sum of chirp functions, meets the emission mask established by the Federal Communications Commission (FCC), and the use of chirp function ensures that the FRFT domain duration of UWB pulse waveform is very short. Therefore the NBI parameters (e.g. center frequency, bandwidth, energy) are more convenient to be obtained by the estimated NBI. The UWB signal will not have a detrimental effect on the performance of the narrowband system by suppressing the UWB signal in the NBI band.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129281142","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
Prohibitive-link Detection and Routing Protocol 禁止链路检测和路由协议
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090135
Marwan M. Fayed, Hussein T. Mouftah
{"title":"Prohibitive-link Detection and Routing Protocol","authors":"Marwan M. Fayed, Hussein T. Mouftah","doi":"10.1109/CCECE.2009.5090135","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090135","url":null,"abstract":"In the current body of knowledge, planarity is necessary in order to recover from routing holes using left- or right-hand rule (LHR). This is often referred to as face-routing. In this paper we introduce the Prohibitive-link Detection and Routing Protocol (PDRP). PDRP is a position-based wireless protocol that, when faced with a routing hole, can recover using left-hand rule in a non-planar environment. As the name implies, the protocol detects and circumvents the prohibitive links that hamper LHR. The goal of PDRP is to provide the same levels of service as GPSR-like protocols, while avoiding the prohibitive transmissions of cooperative protocols such as CLDP. Initial results are promising, revealing the same level of service as face-routing protocols despite preserving most intersecting links in the network.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129503532","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 new 90NM CMOS current feedback operational amplifier 一种新型90NM CMOS电流反馈运算放大器
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090258
F. Elsayed, M. Ibrahim, Y. Ghallab, Wael Badawy, B. Maundy
{"title":"A new 90NM CMOS current feedback operational amplifier","authors":"F. Elsayed, M. Ibrahim, Y. Ghallab, Wael Badawy, B. Maundy","doi":"10.1109/CCECE.2009.5090258","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090258","url":null,"abstract":"A new Current Feedback Amplifier (CFA) suitable for VLSI applications is presented in two different designs to serve both low power (LBW design) and high bandwidth (HBW) applications. The new circuit is employing positive current conveyor followed by amplifier followed by buffer to achieve vey high trans-impedance for this CFA circuit without needing to stack many transistors together and at the same time to use the whole bandwidth range. The proposed circuit is designed and simulated using 90nm technology kit in cadence. The bandwidth of the LBW circuit is approximately constant at 32MHz and for HBW is around 107MHz.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129558466","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
A quasi-orthogonal space-frequency coded ofdm system with time spreading and constellation rotation 具有时间扩展和星座旋转的准正交空频编码ofdm系统
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090227
S. Senthuran, A. Anpalagan, O. Das
{"title":"A quasi-orthogonal space-frequency coded ofdm system with time spreading and constellation rotation","authors":"S. Senthuran, A. Anpalagan, O. Das","doi":"10.1109/CCECE.2009.5090227","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090227","url":null,"abstract":"A constellation rotated quasi-orthogonal OFDM system could offer full rate and full diversity in a frequency selective fading channel. Time spreading can give additional time diversity gain in a fast fading channel. In this paper, we propose and verify a time-spread quasi-orthogonal space-frequency coded OFDM (TS-QO-SFOFDM) system with constellation rotation. Assuming perfect channel state information at the receiver, we develop a coding scheme for 4×1 MISO transceiver and its BER performance is evaluated for different Doppler frequencies in an OFDM system. Monte-Carlo simulation results show that 2 dB gain can be achieved at BER of 10−3 using the proposed scheme compared to a scheme without time spreading and constellation rotation when 512 subcarriers are used at maximum Doppler frequency of 300 Hz. The proposed scheme also lends itself to easy implementation making it more attractive for adaptive cognitive radio systems.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128475595","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
High performance synchronized dual elliptic curve crypto-processor 高性能同步双椭圆曲线密码处理器
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090271
A. A. Zadeh
{"title":"High performance synchronized dual elliptic curve crypto-processor","authors":"A. A. Zadeh","doi":"10.1109/CCECE.2009.5090271","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090271","url":null,"abstract":"In this paper a dual crypto-processor for elliptic curve cryptography has been proposed. The proposed architecture can perform two independent scalar multiplications in parallel over GF(2m). Although in this crypto-processor two independent scalar multiplications are performed in parallel, no extra arithmetic unit is employed in this crypto-processor (except an addition unit). Thus the architecture includes a field multiplier, a field divider, a field squarer and two field adders over the extension field with the degree of 163, which could perform complete arithmetic operations for elliptic curve cryptography. In this crypto-processor two scalar multipliers are synchronized and no conflicts occur in using the arithmetic units (during the execution of scalar multiplication). The implemented results of the Synchronized Dual Elliptic Curve Crypto-processor show that two scalar multiplications could be performed in1.95 msec, (in XC3S1500 platform) while one scalar multiplication takes approximately the same time for this crypto-processor.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127673242","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
Comparison of compensation strategies for shunt active power filter control in unbalanced tree-phase four-wire systems 不平衡三相四线制并联有源滤波控制补偿策略比较
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090291
M. Ranjbar, M. Masoum, A. Jalilian
{"title":"Comparison of compensation strategies for shunt active power filter control in unbalanced tree-phase four-wire systems","authors":"M. Ranjbar, M. Masoum, A. Jalilian","doi":"10.1109/CCECE.2009.5090291","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090291","url":null,"abstract":"This paper presents detailed analysis to compare and evaluate the performances of four control strategies for extracting the reference currents of shunt active power filter under distorted and unbalanced source and load conditions. The four controllers are based on instantaneous reactive power (p-q), d-q coordinate formulation (d-q), unity power factor (UPF), and perfect harmonic cancellation (PHC) strategies. Detailed analysis and simulation results (performed with SimulinkMatlab) are used to highlight the advantages and limitations of each control approach.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116478530","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: 22
A hybrid control strategy for multiple mobile robots with nonholonomic constraints 具有非完整约束的多移动机器人混合控制策略
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090211
G. Gamage, G. Mann, R. Gosine
{"title":"A hybrid control strategy for multiple mobile robots with nonholonomic constraints","authors":"G. Gamage, G. Mann, R. Gosine","doi":"10.1109/CCECE.2009.5090211","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090211","url":null,"abstract":"This paper explains a hybrid control strategy developed to coordinate multiple autonomous mobile robots with nonholonomic constraints. The robots are required to navigate in an obstacles populated environment with a predetermined geometric formation. The nonlinear robot dynamics are fully state feedback linearized in order to yield linear controllable systems while the dynamics of the environment are handled by an event based hybrid automata. The chattering effect of the switched system is tackled by incorporating sliding dynamics in the automata. The proposed system is implemented through simulation and the results are shown to verify its operation.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126995979","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
Principal component analysis based backpropagation algorithm for diagnosis of peripheral arterial occlusive diseases 基于主成分分析的外周动脉闭塞性疾病反向传播诊断算法
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090181
S. Karamchandani, U. Desai, S. Merchant, G. D. Jindal
{"title":"Principal component analysis based backpropagation algorithm for diagnosis of peripheral arterial occlusive diseases","authors":"S. Karamchandani, U. Desai, S. Merchant, G. D. Jindal","doi":"10.1109/CCECE.2009.5090181","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090181","url":null,"abstract":"Impedance cardio-vasography (ICVG) serves as a non-invasive screening procedure prior to invasive and expensive angiographic studies. Parameters like Blood Flow Index (BFI) and Differential Pulse Arrival Time (DPAT) at different locations in both lower limbs are computed from impedance measurements on the Impedance Cardiograph. A Backpropagation neural network is developed which uses these parameters for the diagnosis of peripheral vascular diseases such as Leriche's syndrome. The target outputs at the various locations are provided to the network with the help of a medical expert. The paper proposes the use of Principal Component Analysis (PCA) based Backpropagation network where the variance in the data is captured in the first seven principal components out of a set of fourteen features. Such a Backpropagation algorithm with three hidden layers provides the least mean squared error for the network parameters. The results demonstrated that the elimination of correlated information in the training data by way of the PCA method improved the networks estimation performance. The cases of arterial Narrowing were predicted accurately with PCA based technique than with the traditional Backpropagation Technique. The diagnostic performance of the neural network to discriminate the diseased cases from normal cases, evaluated using Receiver Operating Characteristic (ROC) analysis show a sensitivity of 95.5% and specificity of 97.36% an improvement over the performance of the conventional Backpropagation algorithm. The proposed approach is a potential tool for diagnosis and prediction for non-experts and clinicians.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125707422","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
Fair-Priority-Expression-Based burst scheduling to enhance performance and fairness of shared dram systems 基于公平优先级表达式的突发调度提高共享dram系统的性能和公平性
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090118
Lei Shi, Jun Pang, Lei Yang, Tiejun Zhang, Donghui Wang
{"title":"Fair-Priority-Expression-Based burst scheduling to enhance performance and fairness of shared dram systems","authors":"Lei Shi, Jun Pang, Lei Yang, Tiejun Zhang, Donghui Wang","doi":"10.1109/CCECE.2009.5090118","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090118","url":null,"abstract":"Many algorithms ofmemory access scheduling have been studied to attack the well-known memory-wall. However, some of them introduce unfairness problem in Chip-Multi-Processor (CMP) systems. Therefore a new approach called Fair-Priority-Expression-Based (FairPEB) burst scheduling is proposed in this paper to address both performance and unfairness problems. Experiment results show that this method improves data bus utilization of memory system by 15.4% and 31.87% over conventional First-Ready First-Come-First-Service (FR-FCFS) and original burst scheduling. Furthermore it keeps memory accesses of different applications fair.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"93 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127980640","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
Scale-Space Random Walks 尺度空间随机漫步
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090191
Richard Rzeszutek, Thomas F. El-Maraghi, D. Androutsos
{"title":"Scale-Space Random Walks","authors":"Richard Rzeszutek, Thomas F. El-Maraghi, D. Androutsos","doi":"10.1109/CCECE.2009.5090191","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090191","url":null,"abstract":"The Random Walks image segmentation algorithm provides a fast and effective method for supervised image segmentation. However, Random Walks does not work very well in the presence of noise or texture. Therefore, we propose an augmented version of Random Walks known as “Scale-Space Random Walks” (SSRW) that addresses these problems. Through a minor, though non-trivial, modification to the Random Walks algorithm, we show that the SSRW can produce more accurate segmentations in the presence of noise and texture then the original Random Walks can.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133566240","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
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