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2015 2nd International Conference on Electronics and Communication Systems (ICECS)最新文献

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Null placement in linear antenna arrays with a novel boundary condition of PSO 一种新的粒子群边界条件下线性天线阵的零位置
P. Chakravorty, D. Mandal
In the research of past one decade it has been quite convincingly shown that the boundary conditions in particle swarm optimizers are an important algorithmic part which restricts the particles within the solution space thereby increasing their scope of participation in solution finding process. Usually, velocities of the particles are regulated to bring them back to solution space; here a different fundamental approach of regulating the position of particles is taken, particles which go out of solution place are relocated inside by maintaining symmetry about the boundary. A six element linear antenna array is taken as the optimization target for the placement of nulls in some specified angles and an overall reduction of side lobes in the radiation pattern. Results show better performance of this boundary condition over other established ones in terms of quicker convergence and obtaining better optimization solution.
在过去十年的研究中已经相当令人信服地表明,粒子群优化器中的边界条件是一个重要的算法部分,它将粒子限制在解空间内,从而增加了它们在寻解过程中的参与范围。通常,粒子的速度被调节以使它们回到溶液空间;这里采用了一种不同的调节粒子位置的基本方法,即通过保持边界的对称性,将离开溶液位置的粒子重新安置在溶液内部。以六元线性天线阵列为优化目标,在某些特定角度放置零点,并在辐射方向图中全面减少侧瓣。结果表明,该边界条件在收敛速度和优化解方面优于已有的边界条件。
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引用次数: 2
Photonic band gap structures for ITU-T G 694.1 systems ITU-T g694.1系统的光子带隙结构
S. Robinson
The range of the structural parameter values required to design the optical devices for ITU-T G 694.1 Dense Wavelength Division Multiplexing (DWDM) systems are numerically examined over the wavelength range of DWDM from 1470 nm to 1610 nm. The Photonic Band Gap structure is employed to know the required values. Further, the change in PBG in accordance with radius of the rod, lattice constant or period, refractive index difference, total number of rods used in the structure and arrangement of rods or phipattern are investigated through simulation. The Bandsolve simulator of Rsoft is utilized to calculate PBG which is derived using Plane Wave Expansion (PWE) method.
在1470 nm至1610 nm的DWDM波长范围内,对ITU-T G 694.1密集波分复用(DWDM)系统设计光器件所需的结构参数值范围进行了数值研究。利用光子带隙结构来确定所需值。此外,通过仿真研究了PBG随棒半径、晶格常数或周期、折射率差、结构中使用的棒的总数以及棒或phipattern的排列方式的变化。利用Rsoft的Bandsolve模拟器计算平面波展开法得到的PBG。
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引用次数: 0
Extracting aspects and mining opinions in product reviews using supervised learning algorithm 利用监督学习算法对产品评论进行方面提取和观点挖掘
A. Jeyapriya, C. S. Kanimozhi Selvi
Social media is emerging rapidly on the internet. This media knowledge helps people, company and organizations to analyze information for important decision making. Opinion mining is also called as sentiment analysis which involves in building a system to gather and examine opinions about the product made in reviews or tweets, comments, blog posts on the web. Sentiment is classified automatically for important applications such as opinion mining and summarization. To make valuable decisions in marketing analysis where implement sentiment classification efficiently. Reviews contain sentiment which is expressed in a different way in different domains and it is costly to annotate data for each new domain. The analysis of online customer reviews in which firms cannot discover what exactly people liked and did not like in document-level and sentence-level opinion mining. So, now opinion mining ongoing research is in phrase-level opinion mining. It performs finer-grained analysis and directly looks at the opinion in online reviews. The proposed system is based on phrase-level to examine customer reviews. Phrase-level opinion mining is also well-known as aspect based opinion mining. It is used to extract most important aspects of an item and to predict the orientation of each aspect from the item reviews. The projected system implements aspect extraction using frequent itemset mining in customer product reviews and mining opinions whether it is positive or negative opinion. It identifies sentiment orientation of each aspect by supervised learning algorithms in customer reviews.
社交媒体正在互联网上迅速兴起。这种媒体知识可以帮助个人、公司和组织分析信息以做出重要决策。意见挖掘也被称为情感分析,它涉及建立一个系统来收集和检查关于产品的评论或推文,评论,博客文章在网络上。对于重要的应用,如意见挖掘和摘要,情感是自动分类的。在市场营销分析中做出有价值的决策,有效地实现情感分类。评论包含在不同领域以不同方式表达的情感,并且为每个新领域注释数据的成本很高。对在线客户评论的分析,在文档级和句子级的意见挖掘中,公司无法发现人们到底喜欢什么,不喜欢什么。因此,目前正在进行的意见挖掘研究是在短语级的意见挖掘。它执行更细粒度的分析,并直接查看在线评论中的意见。建议的系统基于短语级来检查客户评论。短语级意见挖掘也被称为基于方面的意见挖掘。它用于提取一个项目最重要的方面,并从项目评论中预测每个方面的方向。规划的系统使用频繁的项目集挖掘客户产品评论和挖掘意见(无论是正面的还是负面的意见)来实现方面提取。它通过客户评论中的监督学习算法识别每个方面的情感倾向。
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引用次数: 94
Design of DPSK modulator, demodulator and power telemetry for Epi-retinal and neural prostheses 视网膜和神经假体用DPSK调制器、解调器和功率遥测的设计
D. Moni, Saju George
The simulation of a DPSK modulator, demodulator and power telemetry for Epi-retinal and neural prostheses is presented in this paper. The technique adopted in this method is DPSK telemetry system with a 22 MHz input frequency. A quad level power telemetry system is to generate high and low voltage outputs to the stimulators. To add flexibility to the stimulator, each pixel has a local digital controller, which enables the stimulator IC to generate 256 parallel stimulations with various pulse widths and amplitudes. The proposed retinal stimulator circuit is designed in 180nm technology using cadence virtuoso analog design environment. The DPSK transmitter, DPSK receiver and power telemetry consumes 93.7μW, 98.3μW, 8.554μW respectively at 1.8V and area occupied for the transmitter and the telemetry is 0.00113mm2 and 0.000648 mm2.
本文介绍了一种用于视网膜和神经假体的DPSK调制器、解调器和功率遥测的仿真。本方法采用的技术是输入频率为22 MHz的DPSK遥测系统。四电平功率遥测系统是产生高、低电压输出到刺激器。为了增加刺激器的灵活性,每个像素都有一个本地数字控制器,这使得刺激器IC能够产生256个具有各种脉冲宽度和幅度的并行刺激。采用cadence virtuoso模拟设计环境,设计了180nm工艺的视网膜刺激电路。在1.8V电压下,DPSK发射机、DPSK接收机和功率遥测的功耗分别为93.7μW、98.3μW、8.554μW,发射机和遥测的占用面积分别为0.00113mm2和0.000648 mm2。
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引用次数: 1
A hybrid approach for UWB pulse shaping 一种用于超宽带脉冲整形的混合方法
M. Menon, A. Gopakumar, Nisheena V. Iqbal
Ultra-wideband (UWB) technology offers a promising solution to the RF spectrum drought by allowing new services to coexist with current radio systems with minimal or no interference. This coexistence brings the advantage of avoiding the expensive spectrum licensing fees that providers of all other radio services must pay. In Ultra Wide Band technology, the conventional analog waveform is a simple pulse which in general is directly radiated to the air. These short pulses have typical widths of less than 1 nanosecond and thus bandwidth of over 1 GHz. Due to this wide bandwidth, Federal Communication Commission(FCC) has imposed certain restrictions on the emission limits of UWB systems. Inorder to fit well to the FCC mask, the basic pulse shapes have to be modified. So pulse shaping is very much relevant in UWB domain. The immediate objective of this paper is to design an optimal pulse shaping technique. This paper proposes a hybrid approach for UWB pulse shaping which utilises ideas from existing two techniques.
超宽带(UWB)技术通过允许新业务与当前无线电系统共存,以最小或没有干扰,为射频频谱干旱提供了一个有前途的解决方案。这种共存带来的好处是避免了所有其他无线电服务提供商必须支付的昂贵的频谱许可费。在超宽带技术中,传统的模拟波形是一个简单的脉冲,通常直接辐射到空气中。这些短脉冲的典型宽度小于1纳秒,因此带宽超过1千兆赫。由于这种宽频带,美国联邦通信委员会(FCC)对超宽带系统的发射限值进行了一定的限制。为了很好地适应FCC掩模,必须修改基本脉冲形状。因此,脉冲整形在超宽带领域具有重要意义。本文的直接目标是设计一种最佳脉冲整形技术。本文提出了一种利用现有两种技术的思想进行超宽带脉冲整形的混合方法。
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引用次数: 7
UWB monopole antenna design in a different substrate using Sierpinski Carpet Fractal Geometry 利用Sierpinski地毯分形几何设计不同基板上的超宽带单极天线
B. Roy, A. Bhattacharya, A. Bhattacharjee, S. Chowdhury
In this paper an Ultra Wideband Monopole antenna is designed for various WLAN and WiMAX applications. The antenna is designed using CST Microwave Studio SuiteTM. Iterative patch structures are considered to obtain optimized result. Also obtain optimized result using different substrate. Sierpinski Carpet Geometry is applied in design of the patch structure. The finalized monopole is proposed to be applicable in the WLAN bands (5.2/5.8 GHz) and WiMAX bands (3.5/5.5 GHz). The antenna exhibits a gain of 2.8 dB, 3.6 dB, 3.8 dB and 3.9 dB at frequencies 3.5 GHz, 5.2 GHz, 5.5 GHz and 5.8 GHz respectively. The antenna exhibits a wide bandwidth of 3.5 GHz to 7.5 GHz respectively.
本文设计了一种适用于各种无线局域网和WiMAX应用的超宽带单极天线。天线是用CST Microwave Studio SuiteTM设计的。采用迭代补片结构进行优化。采用不同的衬底也得到了优化结果。采用席尔宾斯基地毯几何理论设计贴片结构。最终的单极子将适用于WLAN频段(5.2/5.8 GHz)和WiMAX频段(3.5/5.5 GHz)。该天线在3.5 GHz、5.2 GHz、5.5 GHz和5.8 GHz频率下的增益分别为2.8 dB、3.6 dB、3.8 dB和3.9 dB。天线的带宽分别为3.5 GHz ~ 7.5 GHz。
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引用次数: 10
Design and simulation of nano/micro feature size patterns using four-beam interference lithography technique 利用四光束干涉光刻技术设计和模拟纳米/微特征尺寸图案
A. Mathew, A. Kirubaraj, D. Moni, D. Devaprakasam
Interference Lithography is a developing technique for producing micro/nano array pattern structures over large areas. This paper focus on generation of nano/micro feature size patterns using four-beam interference lithography technique. The generated periodic array pattern structures are developed using MATLAB. The interference parameters in FBIL include wavelength (λ), slit separation (d), angle of incidence (Θ), distance between slit and screen (L) and depth of penetration (DOP). We have simulated and modelled the four beam interference lithography technique by varying interference parameters to produce various feature size patterns over the surface of the substrate. The obtained pattern structures have the periodicity of 0.75 μm for 1064 nm, 0.39 μm for 565 nm. Depth of the focus is found to be 0.235 μm for 1064 nm and 0.125μm for 565 nm. Highest value of depth of penetration is observed to be 0.552 mm and 0.586 mm for 1064 nm and 565 nm respectively. The study of FBIL shows depth of penetration increases with decrease in slit separation. More complex patterns can also be produced on varying the position of beams, angle of incidence and number of beams. FBIL can be applied in fabrication of 3D photonic crystals, magnetic storage, solar cells, waveguides, calibration grids, OLEDs and functional surfaces of sensors.
干涉光刻技术是一种用于大面积生产微纳阵列图案结构的新兴技术。本文主要研究了利用四光束干涉光刻技术生成纳米/微特征尺寸图案。利用MATLAB对生成的周期阵图结构进行了开发。FBIL中的干涉参数包括波长(λ)、狭缝间距(d)、入射角(Θ)、狭缝距离(L)和穿透深度(DOP)。我们通过改变干涉参数对四光束干涉光刻技术进行了模拟和建模,以在基板表面上产生各种特征尺寸图案。得到的图案结构在1064 nm处具有0.75 μm的周期性,在565 nm处具有0.39 μm的周期性。1064 nm和565 nm的聚焦深度分别为0.235 μm和0.125μm。在1064 nm和565 nm处,穿透深度最大值分别为0.552 mm和0.586 mm。FBIL的研究表明,随着狭缝间距的减小,穿透深度增加。改变光束的位置、入射角和光束数也可以产生更复杂的图案。FBIL可用于制造三维光子晶体、磁存储、太阳能电池、波导、校准网格、oled和传感器的功能表面。
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引用次数: 0
Optimization of power quality problem for a windturbine fixed speed induction generatorunder asymmetric faultsusing UPFC fed vector control-PI, hysteresis and fuzzy logic 应用UPFC矢量控制- pi、滞后和模糊逻辑优化非对称故障下风力发电机的电能质量问题
P. Karthigeyan, M. S. Raja, M. Sheeba, R. Gnanaselvam, N. Raj
Most of the pollution issues created in power system is due to the power quality problems like faults, harmonics etc. In this paper a grid connected fixed speed wind turbine induction generator subjected to asymmetric fault gets attenuated by unified power flow controller (UPFC) as it compensates the positive and negative sequence voltages thereby reducing the torque oscillations and improving the life time of the drain. It is the combination of static compensator (STATCOM) and static synchronous series compensator (SSSC). The control theory is based on vector control- dq(direct quadrature axis) reference frame fed PI, hysteresis control and fuzzy logic control using DSOGI-PLL(Dual second order generalized integrator- Phase locked loop). The proposed system is implemented using MATLAB / SIMULINK platform with and without Unified power flow controller. The effect of UPFC for fixed speed windturbine under faults is analysed using the above three controllers and its performance is evaluated.
电力系统中产生的大部分污染问题是由于电力质量问题,如故障、谐波等。本文采用统一潮流控制器(UPFC)对不对称故障的并网定速风力发电机组进行正序电压和负序电压的补偿,从而减小了转矩振荡,提高了排极寿命。它是静态补偿器(STATCOM)和静态同步串联补偿器(SSSC)的结合。控制理论是基于矢量控制- dq(直接交轴)参考系馈入PI,滞回控制和模糊逻辑控制采用DSOGI-PLL(双二阶广义积分器-锁相环)。该系统在MATLAB / SIMULINK平台上实现,有统一潮流控制器和没有统一潮流控制器。利用以上三种控制器分析了UPFC在故障情况下对定速风力机的控制效果,并对其性能进行了评价。
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引用次数: 0
A review on improving traffic flow using cooperative adaptive cruise control system 协同自适应巡航控制系统改善交通流的研究进展
Akhilesh Lunge, P. Borkar
The ever-increasing demand of vehicular mobility in today's life over loads the existing road transportation infrastructure and resources, for which a robust solution in the near future lies in effective utilization of currently available means of road transportation and infrastructure. For this purpose, development of Intelligent Transportation Systems (ITS) technologies that contribute to improved traffic flow stability, throughput, better utilization of infrastructure and safety is needed. In today's traffic, to achieve the safe inter-vehicle distance, avoid congestion and improve safety, the limited human perception of traffic conditions and human reaction characteristics constrain should be analysed. In addition, erroneous human driving conditions may generate shockwaves in addition which causes traffic flow instabilities. In this paper to achieve regulated inter-vehicle distance and improved throughput, we consider Cooperative Adaptive Cruise Control (CACC) system, for vehicle string. Information of individual vehicle is exchange between vehicles through wireless communication in addition can give better performance. By introducing vehicle to vehicle (V2V) and vehicle to roadside unit (V2R) communications, the vehicle gets information not only from its preceding and following vehicle but also from the vehicles in front of the preceding one and following one.
当今生活中日益增长的车辆出行需求使现有的道路交通基础设施和资源不堪重负,有效利用现有的道路交通和基础设施是在不久的将来解决这一问题的有力途径。为此,需要开发智能交通系统(ITS)技术,以提高交通流量的稳定性、吞吐量、更好地利用基础设施和提高安全性。在当今的交通中,为了实现安全的车际距离,避免拥堵,提高安全性,需要分析有限的人对交通状况的感知和人的反应特征约束。此外,人类错误的驾驶条件可能会产生冲击波,从而导致交通流的不稳定。为了实现车辆间距离的调节和车辆吞吐量的提高,本文考虑了车辆串的协同自适应巡航控制系统(CACC)。车辆之间通过无线通信交换单个车辆的信息,可以提供更好的性能。通过引入车对车(V2V)和车对路边单元(V2R)通信,车辆不仅可以从前面和后面的车辆获取信息,还可以从前面和后面的车辆获取信息。
{"title":"A review on improving traffic flow using cooperative adaptive cruise control system","authors":"Akhilesh Lunge, P. Borkar","doi":"10.1109/ECS.2015.7124831","DOIUrl":"https://doi.org/10.1109/ECS.2015.7124831","url":null,"abstract":"The ever-increasing demand of vehicular mobility in today's life over loads the existing road transportation infrastructure and resources, for which a robust solution in the near future lies in effective utilization of currently available means of road transportation and infrastructure. For this purpose, development of Intelligent Transportation Systems (ITS) technologies that contribute to improved traffic flow stability, throughput, better utilization of infrastructure and safety is needed. In today's traffic, to achieve the safe inter-vehicle distance, avoid congestion and improve safety, the limited human perception of traffic conditions and human reaction characteristics constrain should be analysed. In addition, erroneous human driving conditions may generate shockwaves in addition which causes traffic flow instabilities. In this paper to achieve regulated inter-vehicle distance and improved throughput, we consider Cooperative Adaptive Cruise Control (CACC) system, for vehicle string. Information of individual vehicle is exchange between vehicles through wireless communication in addition can give better performance. By introducing vehicle to vehicle (V2V) and vehicle to roadside unit (V2R) communications, the vehicle gets information not only from its preceding and following vehicle but also from the vehicles in front of the preceding one and following one.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124848450","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: 13
Design of ternary D latch using carbon nanotube field effect transistors 基于碳纳米管场效应晶体管的三元D锁存器设计
Sutaria Jimmy, S. Narkhede
This paper presents a novel design of ternary D-latch using carbon nanotube field effect transistors. Ternary logic is a promising alternative to the conventional binary logic design technique, since it is possible to accomplish simplicity and energy efficiency in modern digital design due to the reduced circuit overhead such as interconnects and chip area. In this paper novel design of D-latch for ternary logic based on CNTFET, using only basic gates STI, NTI, NOR, NAND and transmission gate, is proposed.
本文提出了一种利用碳纳米管场效应晶体管设计三元d锁存器的新方法。三元逻辑是传统二进制逻辑设计技术的一个很有前途的替代方案,因为它可以在现代数字设计中实现简单和节能,因为它减少了电路开销,如互连和芯片面积。本文提出了一种新颖的基于CNTFET的三元逻辑d锁存器设计,仅使用基本门STI、NTI、NOR、NAND和传输门。
{"title":"Design of ternary D latch using carbon nanotube field effect transistors","authors":"Sutaria Jimmy, S. Narkhede","doi":"10.1109/ECS.2015.7124839","DOIUrl":"https://doi.org/10.1109/ECS.2015.7124839","url":null,"abstract":"This paper presents a novel design of ternary D-latch using carbon nanotube field effect transistors. Ternary logic is a promising alternative to the conventional binary logic design technique, since it is possible to accomplish simplicity and energy efficiency in modern digital design due to the reduced circuit overhead such as interconnects and chip area. In this paper novel design of D-latch for ternary logic based on CNTFET, using only basic gates STI, NTI, NOR, NAND and transmission gate, is proposed.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123729318","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
期刊
2015 2nd International Conference on Electronics and Communication Systems (ICECS)
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