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2015 Communication, Control and Intelligent Systems (CCIS)最新文献

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Design of 3 stage low noise operational amplifier 三级低噪声运算放大器的设计
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437943
G. Sharma, Divesh Kumar, Alok Kumar
In this paper a high gain low noise Op-Amp has been designed. In designing of a high gain Op-Amp, for large values of coupling capacitor, gain will decrease. Since our requirement was to increase the gain, so we have designed a three stage Op-Amp. Our designed circuit provides gain of 78.4 dB, which is very much larger than two stage Op-Amp. There is a trade-off between various parameters like Phase margin, gain, slew rate etc. For example, to achieve larger values of GBW, PM will decrease. We have compared the results for two values of input common mode range. Improvement in the designed circuit is done to achieve the desired GBW by recalculating the transistor's W/L ratios and then simulating the results. Gain Bandwidth product of 176.9 MHz and Phase Margin greater than 60 degrees is achieved but at the cost of power dissipation and area. The Op-Amp is designed in gpdk 180 nm CMOS technology.
本文设计了一种高增益、低噪声的运算放大器。在设计高增益运算放大器时,耦合电容的取值越大,会导致增益降低。由于我们的要求是增加增益,所以我们设计了一个三级运算放大器。我们设计的电路提供78.4 dB的增益,这比两级运算放大器大得多。在相位裕度、增益、摆压率等各种参数之间存在权衡。例如,为了获得更大的GBW值,PM会减少。我们比较了两个输入共模范围值的结果。通过重新计算晶体管的W/L比并对结果进行仿真,对设计电路进行改进以达到期望的GBW。增益带宽积为176.9 MHz,相位裕度大于60度,但以功耗和面积为代价。运算放大器采用gpdk 180纳米CMOS技术设计。
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引用次数: 1
Performance enhancement in Wireless Sensor Network using hexagonal topology 利用六边形拓扑增强无线传感器网络的性能
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437889
Brisheket Suman Tripathi, M. Shukla, Mohit Srivastava
Wireless sensor networks become popular due to its attracting applications like monitoring and tracking. A sensor network is composed of a large number of sensor nodes, which are densely deployed and relay on limited battery power. In an Ad-Hoc network better Quality of Services can be achieved either by using high transmit power or by reducing number of hops. Transmitting at unnecessarily high power reduces the life time of sensor node as well as network. One of the goals of forming a network is to have power optimization-that is, each sensor node should be able to communicate with any other sensor node via less number of hops. Involving less number of intermediate sensor nodes in a route provides better QoS as well as rest sensor nodes can be involved in other transmission. The strategy of using optimum number of hop in multi hop communication is to provide less number of transmission in a route, which provides less involvement of semiconductor noise, signal interference, fading, scattering and shadowing, which ultimately improves QoS and also preserve the power of other sensor nodes.
无线传感器网络因其在监控和跟踪等方面的应用而受到欢迎。传感器网络由大量传感器节点组成,这些节点分布密集,并且依靠有限的电池电量。在Ad-Hoc网络中,可以通过使用高发射功率或减少跳数来实现更好的服务质量。在不必要的高功率下传输会减少传感器节点和网络的寿命。形成网络的目标之一是实现功率优化——也就是说,每个传感器节点应该能够通过更少的跳数与任何其他传感器节点进行通信。在一条路由中加入较少数量的中间传感器节点可以提供更好的QoS,并且剩余的传感器节点可以参与其他传输。在多跳通信中使用最优跳数的策略是在一条路由中提供更少的传输数,从而减少半导体噪声、信号干扰、衰落、散射和阴影的影响,最终在提高QoS的同时保留其他传感器节点的功率。
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引用次数: 1
Multi band circularly polarized asymmetrical fractal boundary microstrip patch antenna using DGS for (2.58/3.02/5.58/6.44GHZ) 多波段圆极化非对称分形边界微带贴片天线(2.58/3.02/5.58/6.44GHZ)
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437872
Ashok Kumar, Mithilesh Kumar, G. Parmar
A design of compact multi band circularly polarized asymmetrical fractal boundary microstrip patch antenna with DGS (defected ground structure) and fractal boundary techniques has been proposed. Using the DGS technique a cross slot and circle are cut away at the centre of the ground plane to enhance the single band to multi band. The structure is asymmetrical along to the principal axes (x, y) because the radius of fractals are different and probe feed is applied at the diagonal of square patch then the excellent CP(circular polarization) is achieved. In the both techniques the proposed antenna sizes also reduce, besides the gain and directivity increase. Experimental results show as 10 dB return loss, gain and circular polarization at the frequencies 2.58, 3.02, 5.58, and 6.44 GHz. More over the 50 ohms feed position is optimized by moving the feed point along the diagonal of the square patch and get the effective gain and directivity grater then 6 dB at each frequency. The overall dimension of the proposed antenna is 42×42×3.3 mm3. This proposed antenna is used for Wi- MAX and WLAN applications.
提出了一种基于缺陷地面结构和分形边界技术的小型多波段圆极化非对称分形边界微带贴片天线的设计方法。利用DGS技术,在地平面中心切割一个交叉槽和圆,将单波段增强为多波段。由于分形半径不同,结构沿主轴(x, y)方向不对称,并在正方形贴片的对角线处施加探针进给,从而获得良好的圆偏振。在这两种技术中,除了增益和指向性增加外,所提出的天线尺寸也减小了。实验结果表明,在2.58、3.02、5.58和6.44 GHz频率下,回波损耗、增益和圆极化均为10 dB。在50欧姆以上的馈电位置,通过沿着正方形贴片的对角线移动馈电点来优化馈电位置,得到每个频率的有效增益和指向性梯度大于6 dB。建议天线的整体尺寸为42×42×3.3 mm3。该天线用于Wi- MAX和WLAN应用。
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引用次数: 6
Design of UWB LNA using active resistors in 0.18µm CMOS technology 采用0.18µm CMOS技术有源电阻的超宽带LNA设计
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437947
S. Nigam, P. C. Sau
The proposed design of LNA uses common gate topology as an amplifying section. Noise cancelling technique is used and special emphasis is laid on the use of active resistors so that overall Noise figure is minimized and gain is enhanced. Simulation is done on ADS tool using 0.18μm technology. Power supply provided is 1.8V. Maximum gain achieved is 14.774dB. Noise figure achieved is 1dB to 1.6 dB over entire bandwidth. Bandwidth achieved is 3-9GHz.
所提出的LNA设计采用共门拓扑作为放大部分。采用了降噪技术,特别强调了有源电阻的使用,从而使总体噪声系数降到最低,提高了增益。采用0.18μm工艺在ADS工具上进行了仿真。供电1.8V。实现的最大增益为14.774dB。在整个带宽上实现的噪声系数为1dB至1.6 dB。实现的带宽为3-9GHz。
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引用次数: 2
Early stage detection and classification of melanoma 黑色素瘤的早期检测和分类
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437904
P. Bhati, Manish Singhal
This paper proposes and describes a system, to classify skin lesion as malignant or benign. There are over 200 different known cancer in which malignant melanoma, is the most dangerous form of skin cancer, and have a good prognosis if treated in the curable early stages. The purpose of the research is to develop, implement and test an application, on clinical images taken using high speed cameras, to detect melanoma in early stage. The proposed system is based on TDS (Total Dermoscopic Score) calculation with preprocessing and OTSU's segmentation method for classification of skin lesion as non-cancerous (Benign), suspicious or cancerous (melanoma). The system has been tested on a dataset of 30 lesions (16 images of malignant lesions and 14 benign lesions). The result of experiment shows that preprocessing steps and OTSU's segmentation with ABCD algorithm provide more accurate result.
本文提出并描述了一个将皮肤病变分类为恶性或良性的系统。已知有200多种不同的癌症,其中恶性黑色素瘤是最危险的皮肤癌,如果在可治愈的早期阶段进行治疗,预后良好。这项研究的目的是开发、实施和测试一种应用程序,利用高速相机拍摄的临床图像来检测早期黑色素瘤。该系统基于预处理后的TDS (Total Dermoscopic Score)计算和OTSU的分割方法,将皮肤病变分类为非癌性(良性)、可疑或癌性(黑色素瘤)。该系统已经在30个病变的数据集上进行了测试(16个恶性病变图像和14个良性病变图像)。实验结果表明,采用ABCD算法的预处理步骤和OTSU分割可以提供更准确的结果。
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引用次数: 22
Design of FIR band-pass digital filter using Heuristic Optimization Technique: A comparison 用启发式优化技术设计FIR带通数字滤波器:比较
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437916
Haroon Sidhu, Raminderjit Kaur, Balraj Singh
The design of Digital Finite Impulse Response (FIR) digital band-pass filter using two Heuristic Optimization Technique have been implemented. Digital FIR Filters are better than Infinite Impulse Response Filters due to their stability and having linear phase. This paper explores the two heuristic optimization techniques namely Particle Swarm Optimization and Differential Evolution. The evaluation of performance of DE algorithm and PSO algorithm has been done and results performs have been compared on the basis of their control parameters. The achieved results show that the Differential Evolution Algorithm better than that of Particle Swarm Optimization in terms of achieved magnitude error and ripples in pass-band and stop-band.
采用两种启发式优化技术实现了数字有限脉冲响应(FIR)数字带通滤波器的设计。数字FIR滤波器由于其稳定性和线性相位而优于无限脉冲响应滤波器。本文探讨了两种启发式优化技术,即粒子群优化和差分进化。对DE算法和粒子群算法的性能进行了评价,并根据它们的控制参数对结果进行了比较。实验结果表明,差分进化算法在量级误差、通带和阻带波纹等方面优于粒子群算法。
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引用次数: 0
Novel hexagonal pizza shaped CPW microstrip patch antenna for applications in X band 应用于X波段的新型六角形披萨型CPW微带贴片天线
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437867
Souryendu Das, Sunandan Gokhroo
A hexagonal pizza shaped microstrip patch antenna for breast cancer tumour detection is proposed in the paper. The antenna is designed to radiate frequencies in a narrowband centred at 9.3 GHz with a return loss of -23.94 dB with a bandwidth of 0.17 GHz (9.21 GHz-9.38 GHz). The antenna has the ground and the patch on the same plane making it a coplanar wave guide antenna. The basic theory and design has been analyzed, and simulation using HFSS commercial software has been employed to optimize the antenna. The antenna has been analysed for various dimensions of slots and the optimum design has been chosen based on slot dimension calculations.
提出了一种用于乳腺癌肿瘤检测的六边形披萨状微带贴片天线。该天线设计辐射以9.3 GHz为中心的窄带频率,回波损耗为-23.94 dB,带宽为0.17 GHz (9.21 GHz-9.38 GHz)。天线的地面和贴片在同一平面上,使其成为共面波导天线。分析了天线的基本原理和设计,并利用HFSS商用软件进行了仿真,对天线进行了优化。对天线的各种槽尺寸进行了分析,并在槽尺寸计算的基础上选择了优化设计方案。
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引用次数: 6
Comparative error rate analysis of cooperative spectrum sensing in non-fading and fading environments 非衰落和衰落环境下协同频谱感知的错误率比较分析
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437891
P. Bachan, S. Ghosh, S. K. Saraswat
In cognitive radio network spectrum sensing is a fundamental element to detect the presence of primary user. In this paper cooperative spectrum sensing scheme is employed to optimize the performance in fading channel environments. This paper will focus on AWGN, rayleigh and rician fading channels to compare the error rates for `n' number of cognitive users. Neyman's hypothesis testing and data fusion rules are used to satisfy and compare the error bounds in a large network for different values of SNR. Finally error rates are compared by considering different threshold values and keeping the SNR as fixed. This comparative analysis can be extended further for double threshold energy detection scheme.
在认知无线网络中,频谱感知是检测主用户存在的基本要素。本文采用协同频谱感知方案来优化衰落信道环境下的性能。本文将重点研究AWGN、rayleigh和专家衰落信道,比较n个认知用户的错误率。采用Neyman假设检验和数据融合规则来满足和比较大型网络中不同信噪比值的误差界。最后,在保持信噪比不变的情况下,考虑不同的阈值,比较误差率。这种对比分析可以进一步推广到双阈值能量检测方案。
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引用次数: 11
A small square UWB antenna with dual rejection bands for WiMAX and WLAN applications 一种小型方形超宽带天线,具有双抑制频带,适用于WiMAX和WLAN应用
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437870
Pankaj Kumar Dhakar, R. K. Raj, Deepak Kumar, I. B. Sharma, Roopkishor Sharma
In this communication we present a microstrip feed small square UWB antenna with enhanced bandwidth and dual rejection bands for WiMAX and WLAN application. The proposed antenna consists of a microstrip feed square radiating patch with W- and Π-shaped slot cut inside it and a partial ground plane with a pair of U-shaped slots, which provides large fractional bandwidth of more than 128% (3.05-14.1 GHz). W-shaped and Π-shaped slot cut inside square radiating patch are used to achieve dual band- rejection performance, which reduces the interference caused by all the 3.5/5.5-GHz WiMAX bands, 5.2/5.5-GHz WLAN bands and 4-GHz C-bands. The proposed antenna successfully simulated using CST microwave studio 2011. It has very small size 10×16 mm2. Simulated results shows that proposed antenna operates over the wide frequency range 3.05-14.1 GHz, defined by S11 <; -10dB. The proposed antenna shows the satisfactory performance for UWB applications.
在本通信中,我们提出了一种微带馈电小方形超宽带天线,具有增强带宽和双抑制带,适用于WiMAX和WLAN应用。该天线包括一个微带馈电方形辐射贴片,其内部有W-和Π-shaped槽,部分地平面有一对u形槽,提供了超过128% (3.05-14.1 GHz)的大分数带宽。采用方形辐射贴片内的w形和Π-shaped切槽实现双频抑制性能,降低了3.5/5.5 ghz WiMAX频段、5.2/5.5 ghz WLAN频段和4-GHz c频段的干扰。该天线在CST微波工作室2011中成功仿真。它的尺寸非常小10×16 mm2。仿真结果表明,该天线工作在3.05-14.1 GHz的宽频率范围内,由S11 <;-10分贝。该天线在超宽带应用中表现出令人满意的性能。
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引用次数: 3
Devising a new technique for all-thermal economic dispatch problem's solution employing angular fuzzy sets and variation factor 设计了一种利用角模糊集和变异因子求解全热经济调度问题的新方法
Pub Date : 2015-11-01 DOI: 10.1109/CCINTELS.2015.7437931
Ravindra Kumar, Aasha Chauhan, A. Aggarwal
This paper has the following objectives: (1) finding the solution of economic dispatch problem using angular fuzzy sets and a variation factor, and (2) formulate a new technique for including risk management in the solution of economic dispatch problem. This new technique uses a method based upon angular fuzzy sets and a variation factor for calculating risk associated with variations or uncertainties involved in the solution of economic dispatch problem. Since the cost curve for each generator has inaccuracies and uncertainties, there is a need for including risk management in the solution of economic dispatch problem. This is to be noticed that inclusion of risk management in the solution does not reduce uncertainties, but it is providing a more accurate and precise solution considering uncertainty. Thus, this paper presents a method based on angular fuzzy sets and a variation factor that is capable of modeling economic dispatch problem including risk management.
本文的目的是:(1)利用角模糊集和变异因子求解经济调度问题;(2)提出一种将风险管理纳入经济调度问题求解的新方法。该方法采用基于角度模糊集和变异因子的方法来计算经济调度问题求解中涉及的变异或不确定性的风险。由于每台发电机组的成本曲线具有不准确性和不确定性,因此在经济调度问题的解决中需要纳入风险管理。需要注意的是,在解决方案中包含风险管理并不能减少不确定性,但它提供了一个考虑不确定性的更准确和精确的解决方案。为此,本文提出了一种基于角模糊集和变异因子的经济调度建模方法,该方法能够对包括风险管理在内的经济调度问题进行建模。
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引用次数: 1
期刊
2015 Communication, Control and Intelligent Systems (CCIS)
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