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Journal of Electronic Science and Technology of china 2003年第1期1卷 47-53页

作者： CHEN Hui XIONG Guangze(School of Computer Science and Engineering,uestc Chengdu 610054 china) School of Computer Science and Engineering UESTC Chengdu 610054 China

By thorough research on the prominent periodic and aperiodic scheduling algorithms,anon-line hard real-time scheduler is presented,which is applicable to the scheduling of packets over a *** scheduler,based on both Rate Monotonic,pinwheel scheduling algorithm Sr and Polling Serverscheduling algorithms,can rapidly judge the schedulability and then automatically generate a bus tablefor the scheduling algorithm to schedule the packets as the periodic *** implementation of thescheduler is simple and easy to use,and it is effective for the utilization of bus *** orderly executionof the bus table can not only guarantee the performance of the hard real time but also avoid the blockageand interruption of the message *** the scheduler perfectly meets the demand of hard real-time communication system on the field bus domain.

关键词： hard real-time communication advanced real-time communication scheduler(ARTCS) on-line scheduler bus scheduling table message

An Exact Virtual Network Embedding Algorithm Based on Integer Linear Programming for Virtual Network Request with Location Constraint

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china Communications 2016年第8期13卷 177-183页

作者： Zeheng Yang Yongan Guo School of Computer Science and Engineering University of Electronic Science and Technology of China(UESTC) College of Telecommunications and Information Engineering Nanjing University of Posts and Telecommunications

Network virtualization is known as a promising technology to tackle the ossification of current Internet and will play an important role in the future network area. Virtual network embedding(VNE) is a key issue in network virtualization. VNE is NP-hard and former VNE algorithms are mostly heuristic in the *** exact algorithms have been developed in recent years. However, the constraints of exact VNE are only node capacity and link *** on these, this paper presents an exact VNE algorithm, ILP-LC, which is based on Integer Linear Programming(ILP), for embedding virtual network request with location constraints. This novel algorithm is aiming at mapping virtual network request(VNR) successfully as many as possible and consuming less substrate *** topology of each VNR is randomly generated by Waxman model. Simulation results show that the proposed ILP-LC algorithm outperforms the typical heuristic algorithms in terms of the VNR acceptance ratio, at least 15%.

关键词： network virtualization virtual network embedding exact VNE algorithm integer linear Programming location constraint VNR acceptance ratio

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城市场景SAR原始回波模拟方法

系统仿真学报 2008年第22期20卷 6100-6102页

作者：贺知明周波电子科技大学电子工程学院成都610054

基于城市场景是在一随机分布的粗糙电介质地形上放置直立的若干建筑物的假设,建立多重散射模型,采用小面单元分析方法和Kirchhoff近似方法计算散射系数。回波信号模型采用二维FFT实现,最后通过对原始回波成像图形进行分析,表明了该方法... 详细信息

基于城市场景是在一随机分布的粗糙电介质地形上放置直立的若干建筑物的假设,建立多重散射模型,采用小面单元分析方法和Kirchhoff近似方法计算散射系数。回波信号模型采用二维FFT实现,最后通过对原始回波成像图形进行分析,表明了该方法的有效性。

关键词： SAR 小面单元原始回波数据模拟城市场景

Analysis of Coupling between DR and Microstrip

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Journal of Electronic Science and Technology of china 2003年第1期1卷 12-14,59页

作者： LIAO Juan LIU Guanghu(School of Electronic Engineering,uestc Chengdu 610054 china) School of Electronic Engineering UESTC Chengdu 610054 China

The coupling between dielectric resonator (DR) and microstrip is theoretically analyzed in *** equivalent circuit and corresponding components' expression are ***,the formula of thecoupling ratio is deduced,which is the critical parameter to calculate the values of *** analysis of thepaper can be used in modeling and strict design in DR applications such as dielectric resonator oscillators(DROs)and DR *** the end of the paper,an example of DRO design based on the analysis above is *** between modulation and measure shows the significance of the paper.

关键词： dielectric resonator microstrip coupling dielectric resonator oscillator

A Power Line-delivered and Lamp-based Broadband Mobile Communication System

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ZTE Communications 2007年第3期5卷 28-31页

作者： Tang Youxi Shao Shihai (National key Lab of Communications,uestc,Chengdu 610054,china)

A new mobile communications network architecture is proposed to solve four existing bottlenecks that restrict the rapid development of mobile communications,as well as to meet the development demands of future broadband mobile communications. The architecture introduces the Information Lamp (IL),a novel device carrying out transceiver function,as the access point,besides providing light. It fulfills information interaction between the access points and radio access network through the power line (or fiber). The new system,supported by core technologies such as multi-antenna based distributed space-time signal processing and distributed radio resource management,integrates the wired and wireless networks to provide high-speed and high-quality mobile communication services.

关键词： MIMO line A Power Line-delivered and Lamp-based Broadband Mobile Communication System Access

Layer-by-layer assembly carbon nanotubes thin film based gas sensors for ammonia detection

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Science china(Information Sciences) 2011年第12期54卷 2700-2706页

作者： SUN Ping 1,2 , JIANG YaDong 1* , XIE GuangZhong 1 , DU XiaoSong 1 , LI Xian 1 & HU Jia 1 1 School of Optoelectronic Information, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of china (uestc), Chengdu, 610054, china 2 Life and Physical Science College, Sichuan Agricultural University, Ya’an 625014, china 1. School of Optoelectronic Information State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China (UESTC) Chengdu 610054 China2. Life and Physical Science College Sichuan Agricultural University Ya’an 625014 China

Single walled carbon nanotubes (SWNTs) were deposited on interdigital electrode (IDE) devices and quartz crystal microbalance (QCM) devices through layer-by-layer self-assembly method to fabricate resistance sensitive and mass sensitive gas sensors, respectively. Their ammonia gas-sensitive characteristics were detected at different temperature. It is revealed that the SWNTs based mass sensitive gas sensor has good sensing properties at room temperature. However, the SWNTs based resistance sensitive gas sensor has irreversible response for ammonia gas. When the temperature increases, the noise of SWNTs based mass sensitive gas sensor increases and the gas sensitive characteristic decreases. Meanwhile, the humidity effect is also discussed. It is important to optimize gas sensor by making it work at an appropriate external environment.

关键词： layer-by-layer self-assembly carbon nanotube gas sensor

Theoretical Proof of Unconditional Stability of the 3-D ADI-FDTD Method

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Journal of Electronic Science and Technology of china 2003年第1期1卷 1-5页

作者： WANG Yingjun WANG Bingzhong SHAO Wei (School of Physical Electronics,uestc Chengdu 610054 china) School of Physical Electronics UESTC Chengdu 610054 China

In order to eliminate Courant-Friedrich-Levy(CFL) condition restraint and improvecomputational efficiency,a new finite-difference time-domain(FDTD)method based on the alternating-direction implicit(ADI) technique is introduced *** this paper,a theoretical proof of the stabilityof the three-dimensional(3-D)ADI-FDTD method is *** is shown that the 3-D ADI-FDTDmethod is unconditionally stable and free from the CFL condition restraint.

关键词： alternating-direction implicit(ADI)technique Courant-Friedrich-Levy(CFL)condition restraint finite-difference time-domain(FDTD)method stability

Numerical analysis of thermal distortion of the mirror in space-to-groundlaser communicationlinks

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Optoelectronics Letters 2005年第3期 55-58页

作者： LI Xiao-feng~(**), ZHANG Bai-lei, LIN Mi, and QI Li-meiInstitute of Physical Electronics,uestc of china,Chengdu 610054,china

The thermal distortion of an optical reflector surface due to the changing sunlight in a space environment will cause shift and spreading of its reflected focus and thereby influence the performance of space-to-ground laser communication links. Based on the characteristics of a low orbit satellite, the normal shift of a plan mirror caused by thermal distortion is analyzed with the software of the ANSYS of finite element analysis. A general expression of the transmitted beam from a distorted reflector surface and a counting formula for the shifts of the focus center before and after thermal distortion are deduced. The result of simulation shows that the magnitude order of the normal shift of the antenna mirror surface can be as high as tens of μ*** worse the mirror thermal distortion is, the larger the shift of the received focus center is. And the change of the shifts does not obey a linear rule.

关键词： Numerical analysis of thermal distortion of the mirror in space-to-groundlaser communicationlinks

Blind Identification of Time-Varying Dispersive CDMA Channels in Wireless Mobile Test Systems

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Blind Identification of Time-Varying Dispersive CDMA Channel...