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2009 Canadian Conference on Electrical and Computer Engineering最新文献

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ATSC multipath channel characterization for fixed and mobile reception 固定和移动接收的ATSC多径信道特性
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-06-19 DOI: 10.1109/CCECE.2009.5090204
Limeng Song, A. Semmar, J. Chouinard, Viet-Ha Pham, Xianbin Wang
{"title":"ATSC multipath channel characterization for fixed and mobile reception","authors":"Limeng Song, A. Semmar, J. Chouinard, Viet-Ha Pham, Xianbin Wang","doi":"10.1109/CCECE.2009.5090204","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090204","url":null,"abstract":"For the investigation of the wireless channel for the Advanced Television Systems Committee (ATSC) Terrestrial Digital Television (DTV)multipath channel transmission system, channel characterization and modeling are very important for the system designer. Based on the channel estimation procedure, we present a data analysis of the distribution of the fixed and mobile DTV multipath channels in different environment. We analyzed the power delay profiles, distributions of the root mean square (RMS) delay spread, multipath number distributions and the arrival time distributions. The modified Poisson model has been applied to compare with the statistical model of the multipath for each channel.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132596309","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
Gas flow rate effects from a Z-pinch discharge plasma on extreme ultraviolet emission z箍缩放电等离子体气体流速对极紫外辐射的影响
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090270
Chaohai Zhang, P. Lv, S. Katsuki, H. Akiyama
{"title":"Gas flow rate effects from a Z-pinch discharge plasma on extreme ultraviolet emission","authors":"Chaohai Zhang, P. Lv, S. Katsuki, H. Akiyama","doi":"10.1109/CCECE.2009.5090270","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090270","url":null,"abstract":"Extreme ultraviolet (EUV) radiation with wavelengths of 11 to 14 nm is seen as the most promising candidate for a new lithographic technology. Compared to synchrotron radiation sources and laser produced plasmas, gas discharge produced plasma (GDPP) sources for EUV radiation are expected to offer lower cost of ownership. This paper describes the dependence of EUV emission on gas flow rate. Using xenon a broadband emission in the investigated wavelength range from 10 to 18 nm is observed. Very short current pulses were applied across the xenon-filled Z-pinch capillary(3 mm diameter and 5 mm length) to produce EUV radiation. A EUV radiation from the Z-pinch plasma was characterized, which is based on the temporal behavior of EUV intensity and the pinhole images.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"85 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":"116920971","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
On the achievable outage probability of opportunistic relaying with decode-and-forward 基于译码转发的机会中继可实现的中断概率
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090200
Ning Hu, Xiaofeng Zhong, Ming Zhao, Jing Wang, Luo Chen
{"title":"On the achievable outage probability of opportunistic relaying with decode-and-forward","authors":"Ning Hu, Xiaofeng Zhong, Ming Zhao, Jing Wang, Luo Chen","doi":"10.1109/CCECE.2009.5090200","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090200","url":null,"abstract":"Based on decode-and-forward strategy, we investigate the achievable outage probability of opportunistic relaying, in which there is a single source-destination transmission pair with the help of one of multiple relays. In two-hop scenario, based on adaptive decode-and forward strategy, the achievable diversity-multiplexing tradeoff with the knowledge of channel state amplitudes is analyzed. We show that opportunistic relaying has the same diversity-multiplexing tradeoff as the relaying with distributed space-time coding. We then present the expression in a closed form and find a suboptimal power allocation for the achievable outage probability of opportunistic relaying with decode-and-forward. Simulation results are provided to demonstrate the validity of our analysis and the applicability of the optimum results to select a single ‘good’ relay.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"22 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":"123296087","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
Multirate distributed source coding in wireless sensor network USIND LDPC codes 基于LDPC码的无线传感器网络多速率分布式源编码
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090114
E. Rezayi, B. Abolhassani
{"title":"Multirate distributed source coding in wireless sensor network USIND LDPC codes","authors":"E. Rezayi, B. Abolhassani","doi":"10.1109/CCECE.2009.5090114","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090114","url":null,"abstract":"Energy conservation in wireless sensor networks (WSNs) is the primary performance parameter, because of their limited energy resources. Thus, some energy saving technologies should be applied. One of these technologies for WSNs is distributed source coding (DSC), related to correlation between sensor outputs. In this paper, we propose to apply multirate distributed source coding to reduce energy consumption for a target BER value. Low Density Parity Check (LDPC) code is one of the practical codes that can be used for DSC to compress close to Slepian-Wolf limit. The simulation results for codes of length 1000 and three different compression ratios show that the proposed multirate approach achieves better energy efficiency rather than a single rate code with similar maximum BER value.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"9 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":"125510823","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
Throughput-based network-on-chip topology generation and analysis 基于吞吐量的片上网络拓扑生成与分析
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090116
G. Khan, V. Dumitriu
{"title":"Throughput-based network-on-chip topology generation and analysis","authors":"G. Khan, V. Dumitriu","doi":"10.1109/CCECE.2009.5090116","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090116","url":null,"abstract":"This paper presents a new approach to meeting communication requirements of on-chip network systems. The method is based on the transaction-oriented protocol employed by on-chip components, and the fact that latency becomes the performance-impacting factor instead of bandwidth. A network-on-chip topology generation and analysis tool is presented which has the primary aim of generating on-chip topologies that will meet a given information throughput. The proposed methodology also incorporates contention estimation into the design phase, thus reducing execution time considerably by eliminating the need for multiple generation iterations. SystemC simulation results for two multimedia applications with differing throughput requirements are presented, and the method provides comparable performance to regular topologies while using, on average, half the resources.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"31 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":"125528358","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
Dynamic model-based augmented extended Kalman filter for real time simulation of mobile robots 基于动态模型的增强扩展卡尔曼滤波用于移动机器人的实时仿真
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090209
I. Hassanzadeh, M. Fallah
{"title":"Dynamic model-based augmented extended Kalman filter for real time simulation of mobile robots","authors":"I. Hassanzadeh, M. Fallah","doi":"10.1109/CCECE.2009.5090209","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090209","url":null,"abstract":"This paper presents a new design of augmented extended Kalman filter (AEKF) based on the dynamic model for real-time simulation of mobile robots. The dynamic model is composed of two consecutive parts; kinematic model and equations of linear and angular torques. A Simulink® model is developed for simultaneous localization and odometry calibration of mobile robots in real time manner. Assuming an absolute measurement available, the AEKF provides the local reconstruction of mobile robots position and orientation with an on-line odometry calibration. Furthermore, it gives estimations for the linear and angular velocities of the robot that can be used for control strategy. The simulation results verify the effectiveness of the proposed method and suggest it as a promising way for real time control of mobile robots.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"128 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":"116527906","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
Downlink transmitter adaptation based on greedy SINR maximization 基于贪婪信噪比最大化的下行发射机自适应
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090099
D. Popescu, Shiny Abraham, O. Popescu
{"title":"Downlink transmitter adaptation based on greedy SINR maximization","authors":"D. Popescu, Shiny Abraham, O. Popescu","doi":"10.1109/CCECE.2009.5090099","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090099","url":null,"abstract":"In this paper we present algorithms for transmitter adaptation in downlink wireless systems based on maximization of the Signal-to-Interference plus Noise-Ratio (SINR). We investigate their fixed-point properties in various scenarios and their relationship with optimal points in dual uplink scenarios.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"478 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":"116527923","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
Wireless network channel quality estimation inside reactor building using RSSI measurement of wireless sensor network 利用无线传感器网络的RSSI测量方法估计反应堆建筑内无线网络信道质量
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090149
Soorena Merat, W. Almuhtadi
{"title":"Wireless network channel quality estimation inside reactor building using RSSI measurement of wireless sensor network","authors":"Soorena Merat, W. Almuhtadi","doi":"10.1109/CCECE.2009.5090149","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090149","url":null,"abstract":"It has always been a technical challenge for operations service team to expand wireless network reception inside reactor buildings (RB) and their service wings (SW). This is driven by the volume of metal equipment inside the Reactor Buildings (RB) that blocks and somehow shields the signal throughout the link.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"73 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":"122787219","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
Enhanced ATSC DTV channel estimation 增强ATSC数字电视信道估计
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090233
Viet-Ha Pham, J. Chouinard, A. Semmar, Xianbin Wang, Yiyan Wu
{"title":"Enhanced ATSC DTV channel estimation","authors":"Viet-Ha Pham, J. Chouinard, A. Semmar, Xianbin Wang, Yiyan Wu","doi":"10.1109/CCECE.2009.5090233","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090233","url":null,"abstract":"ATSC standard is the digital television (DTV) standard in the North America and was developed by the Advanced Television Systems Committee. ATSC uses the maximal length pseudo-random number (PN) sequences and a correlator in order to estimate the transmission channel between the transmitter and the receiver. Conventionally, the PN511 sequence is used to estimate the channel impulse responses. In this paper, we present the performance of an enhanced channel estimation method by the application of the compound PN sequence, which is the combination of one PN511 and three PN63 sequences. The numerical results of the laboratory measurements show a good improvement in the estimation performance of the compound PN sequence over the conventional PN511 sequence. The new estimated channel impulse responses possess a lower noise floor level than the previously estimated channel impulse responses.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"12 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":"128248939","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
Estimation of symbol rate from the autocorrelation function 从自相关函数估计符号率
2009 Canadian Conference on Electrical and Computer Engineering Pub Date : 2009-05-03 DOI: 10.1109/CCECE.2009.5090190
Y. Chan, B. H. Lee, R. Inkol, François Chan
{"title":"Estimation of symbol rate from the autocorrelation function","authors":"Y. Chan, B. H. Lee, R. Inkol, François Chan","doi":"10.1109/CCECE.2009.5090190","DOIUrl":"https://doi.org/10.1109/CCECE.2009.5090190","url":null,"abstract":"The estimation of the symbol rate (or symbol duration Ts) of a symbol sequence in noise has important applications in symbol timing recovery and radio surveillance. Since a symbol sequence has spectral peaks at intervals 1/Ts, Ts estimation centers mostly on the establishment of spectral rate lines from the sequence. Examples include the delay and multiply circuit, and the cyclostationarity based estimators. This paper presents an alternative. It first computes the autocorrelation function of a sequence, which has a first discontinuity at lag Ts. Locating this discontinuity then gives an estimate of Ts. Simulation results show that, for the range of signal-to-noise-ratios under consideration, errors of less than 3% of Ts are achievable.","PeriodicalId":153464,"journal":{"name":"2009 Canadian Conference on Electrical and Computer Engineering","volume":"12 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":"125125431","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
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