2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14)最新文献_第2页

Wavelet transform basis to detect the odd peaks in wireless systems 基于小波变换检测无线系统中的奇峰

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808766

A. Damati, O. Daoud, Q. Hamarsheh

{"title":"Wavelet transform basis to detect the odd peaks in wireless systems","authors":"A. Damati, O. Daoud, Q. Hamarsheh","doi":"10.1109/SSD.2014.6808766","DOIUrl":"https://doi.org/10.1109/SSD.2014.6808766","url":null,"abstract":"The performance of wireless systems has been studied on the basis of tackling the unwanted peak. A wavelet transform method was used for this purpose. Specifically, this proposition has been applied to combat the large peak-to-average power ratio (PAPR), which is one of the major Orthogonal Frequency Division Multiplexing (OFDM) system's drawbacks Furthermore, Multiple-Input Multiple-Output (MIMO) technology also imposed to enhance the wireless systems performance. To draw the best performance of this work, a MATLAB simulation has been used and it is divided into three main stages; MIMO-OFDM symbols' reconstruction based on wavelet transform, then a predetermined thresholding formula that is used, and finally, imposing moving filter. This algorithm is called Peaks' detection based Entropy Wavelet Transform; PDEWT. Moreover, a numerical analysis also used to check its validity. Based on our simulation and under some constrains such as the bandwidth occupancy and the complexity structure of the transceivers, a peak detection ratio has been achieved and reaches around 85%. Comparing to our previously published works, the PD-EWT enhances the detection ratio for 25% more peaks.","PeriodicalId":168063,"journal":{"name":"2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14)","volume":"87 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131143984","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

Direct power control of a doubly fed induction generator dedicated to wind energy conversions 专门用于风能转换的双馈感应发电机的直接功率控制

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808807

Aicha Daoud, F. B. Salem

引用次数: 6

Control of single-phase islanded PV/battery minigrids based on power-line signaling 基于电力线信号的单相孤岛光伏/电池微型电网控制

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808873

P. Quintana, J. Guerrero, T. Dragičević, J. Vasquez

引用次数: 3

Modeling and control of flexible HEV charging station upgraded with flywheel energy storage 飞轮储能升级的柔性混合动力汽车充电站建模与控制

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808864

T. Dragičević, Q. Shafiee, Dan Wu, L. Meng, J. Vasquez, J. Guerrero

{"title":"Modeling and control of flexible HEV charging station upgraded with flywheel energy storage","authors":"T. Dragičević, Q. Shafiee, Dan Wu, L. Meng, J. Vasquez, J. Guerrero","doi":"10.1109/SSD.2014.6808864","DOIUrl":"https://doi.org/10.1109/SSD.2014.6808864","url":null,"abstract":"This paper deals with the design of a fast DC charging station (FCS) for hybrid electric vehicles (HEVs) that is connected at a remote location. Power rating of this new technology can go up to a hundred kW and it represents a main challenge for its broad acceptance in distribution systems. In that sense, growing number of these stations, if operated in a non-flexible regime, will start to cause problems in future distribution systems such as overloads of local network's corridors and reduction of its total equivalent spinning reserves. A power balancing strategy based on a local energy storage system (ESS) is proposed in this paper. Flywheel has been selected as the means of storing energy as it provides high power density and does not have significant performance degradation along its lifetime. Implemented control algorithm uses the energy stored in flywheel to compensate for the peak of power introduced by HEV charger, avoiding big initial stress in grid converter and also is able to limit the maximum extracted power. In addition, feed-forward compensation has been implemented to reduce the voltage dip within the station. Real time simulation results, that prove the validity of proposed approach, have been presented.","PeriodicalId":168063,"journal":{"name":"2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122058820","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

Design high precision time keeping clock system based on Time Digital Convert 设计了基于时间数字转换的高精度报时时钟系统

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808901

Lin-wei Tao, Ying-min Wang

{"title":"Design high precision time keeping clock system based on Time Digital Convert","authors":"Lin-wei Tao, Ying-min Wang","doi":"10.1109/SSD.2014.6808901","DOIUrl":"https://doi.org/10.1109/SSD.2014.6808901","url":null,"abstract":"The high-precision crystal is mostly used as the clock source of the high-precision timekeeping systems. However, errors of the crystal output frequency are presented and accumulated due to the environmental temperature, load, and change of the excitation voltage, nature aging and other reasons. It would affect the accuracy of the timekeeping system, so that it cannot be applied to the occasions of the high-precision timekeeping clock. To overcome the errors above, this paper presents the design of a high-precision time keeping clock system. The system mainly consists of high-precision crystal (HPC), the accumulator (ACC), and Time Digital Convert (TDC) module. The HPC generates a pulse with the fixed period, and the pulse is taken as the input clock of ACC to make ACC self added according to the pre-set step. Then the overflowed signal of ACC acts as the output signal of the system's time keeping clock. When working, the system accurately measures the period of the HPC by use of the TDC module, and then the ACC stepping values are adjusted according to the measured results. It makes the overflowed signal of ACC remain the period as a high-accuracy clock signal. The system effectively eliminates the time keeping error which comes from the error and aging of the crystal. Experiments show that the system greatly reduces the cumulative time error, and the average cumulative time keeping error is 26.5ns in one week with the time keeping mean square error of 63ns.","PeriodicalId":168063,"journal":{"name":"2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124777901","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

Fuzzy augmented state kalman observer for fault and state estimation 故障和状态估计的模糊增强状态卡尔曼观测器

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808814

I. Maalej, D. B. H. Abid, C. Rekik, N. Derbel

引用次数: 3

A low-cost open-source data acquisition system 一个低成本的开源数据采集系统

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808795

J. R. Blanco, F. F. Martín, M. Valledor, Juan Carlos Campo Rodríguez

引用次数: 4

A collaborative reputation approach to avoid misbehaving nodes in MANETs 一种避免manet中不良行为节点的协作声誉方法

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808884

M. Al-Shurman, Mohammad G. Alfawares, M. Al-Mistarihi, Khalid A. Darabkh

引用次数: 4

Continuous closed form trajectories generation and control of redundantly actuated parallel kinematic manipulators 冗余驱动并联机械臂连续闭合轨迹生成与控制

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808879

Moussâb Bennehar, A. Chemori, S. Krut, F. Pierrot

引用次数: 1

High performance two-stage charge-pump for spur reduction in CMOS PLL 用于抑制CMOS锁相环杂散的高性能两级电荷泵

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI: 10.1109/SSD.2014.6808749

Jung-Woong Park, Nam-Soo Kim, Hye-Im Jeong, Da-Sol Won, Ho-Yong Choi

引用次数: 4