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2017 IEEE International Conference on Circuits and Systems (ICCS)最新文献

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A U-slot microstrip patch antenna for Wi-max applications u型槽微带贴片天线,用于Wi-max应用
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8325973
Saraff Sahithi, S. A. Kumar, T. Shanmuganantham
A U-slot microstrip patch antenna to yield better bandwidth performance is presented for WiMAX applications. It comprises of a symmetric U-slot w.r.t rectangular patch. The working principle, and design procedure are extensively described in this paper. The results are shows that the u slot antenna provides a band from 3.5GHz to 3.7GHz which is capable to achieve minimum voltage with good bandwidth and radiation properties. Finally a microstrip antenna operating at resonant frequency 3.6GHz is designed.
提出了一种具有较好带宽性能的u槽微带贴片天线,用于WiMAX应用。它由对称u型槽w.r.t矩形贴片组成。本文详细介绍了其工作原理和设计过程。结果表明,u槽天线提供了3.5GHz ~ 3.7GHz的频段,能够实现最低电压,同时具有良好的带宽和辐射特性。最后设计了工作在3.6GHz谐振频率下的微带天线。
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引用次数: 9
Digital readout circuit with direct microcontroller interface for bridge-connected resistive sensors 数字读出电路与直接微控制器接口的桥接电阻传感器
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8325951
V. Philip
Resistive sensors in bridge configuration are common in the field of instrumentation. A digitizer circuit that works on the principle of capacitor charge-discharge is proposed in this paper. A direct digital readout is obtained by measuring the charge and discharge time intervals. The proposed converter is independent of circuit parameters like lead wire resistances, switch resistances and microcontroller pin resistances. The digitizer circuit provides the advantage of direct interface to microcontroller input-output ports and hence reduces the need for additional hardware. Simulation studies have been carried out for the proposed converter and the output is linear with worst case error within 0.005%. Results of hardware implementation of the digitizer circuit with fixed resistors emulating the behavior of bridge-network provided a linear output with worst case error within 0.1 %.
电桥式电阻式传感器在仪器仪表领域中很常见。本文提出了一种基于电容充放电原理的数字化电路。通过测量充电和放电的时间间隔,可以得到直接的数字读数。该转换器不受引线电阻、开关电阻和微控制器引脚电阻等电路参数的影响。数字化电路提供了与微控制器输入输出端口直接接口的优势,因此减少了对额外硬件的需求。对所提出的变换器进行了仿真研究,输出是线性的,最坏情况误差在0.005%以内。模拟电桥网络行为的固定电阻数字化电路的硬件实现结果提供了最坏情况误差在0.1%以内的线性输出。
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引用次数: 2
DUET using automatic peak detection and histogram thresholding DUET使用自动峰值检测和直方图阈值
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8326007
Shahin M. Abdulla, J. Jayakumari
The degenerate unmixing estimation technique is a blind source separation algorithm used to separate audio source signals from the stereo audio mixtures without earlier learning. In this paper, a new blind source separation algorithm is developed utilizing automatic peak detection and histogram thresholding. First, a power weighted 2D histogram is created from the ratio of the time-frequency domain of the microphone signals. The 2D histogram detects a peak point for each original signal automatically with maximum position corresponds to the relative attenuation and delay mixture parameters. Further, the time-frequency masking is employed to separate one mixture into the original sources. The proposed methodology just requires a couple of parameters, and it acts as a solitary answer with a chance to implement extra post processing features or digital audio effects to the original audio sources. The test results on audio mixtures prove the advantages and superiority of the proposed approach.
退化解混估计技术是一种盲源分离算法,用于在不需要早期学习的情况下从立体声音频混合中分离出音频源信号。本文提出了一种基于自动峰值检测和直方图阈值分割的盲源分离算法。首先,从麦克风信号的时频域的比例创建一个功率加权的二维直方图。二维直方图自动检测每个原始信号的峰值点,最大位置对应于相对衰减和延迟混合参数。此外,采用时频掩蔽将一个混合信号分离成原始源。所提出的方法只需要几个参数,它可以作为一个单独的答案,有机会实现额外的后处理功能或原始音频源的数字音频效果。对混合音频的测试结果证明了该方法的优越性。
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引用次数: 1
HDL implementation of digital filters using floating point vedic multiplier 数字滤波器的HDL实现使用浮点韦达乘法器
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8326004
Prashant S. Howal, Kishor P. Upla, Mehul C. Patel
Multiplication is one of the important operations in many signal processing applications such as digital filters design, fast Fourier transform (FFT), discrete Fourier transform (DFT), discrete cosine transform (DCT), etc. The performance of multiplier has direct effect on the final output of those applications. Due to this, there is always a need to design a multiplier which has high accuracy with high speed and low power consumption. Moreover, it is also desirable to have multiplier with less area and complexity. In this paper, we address the problem of hardware description language (HDL) implementation of digital filters using vedic multiplier with Urdhva-Triyakbhyam sutra. Vedic multiplication is used in finite impulse response (FIR) and infinite impulse response (IIR) filters as a basic building block with single precision floating point format which increases the accuracy and range of multiplication coefficients. The potential of the proposed algorithm is evaluated by comparing its performance with other existing multipliers such as shift & add, array, and Wallace multipliers. The experimental results show an improvement in terms of area and complexity using the proposed algorithm when compared to the other existing multiplication methods.
乘法运算是数字滤波器设计、快速傅立叶变换(FFT)、离散傅立叶变换(DFT)、离散余弦变换(DCT)等许多信号处理应用中的重要运算之一。乘法器的性能直接影响到这些应用程序的最终输出。因此,总是需要设计一种高精度、高速度和低功耗的乘法器。此外,还希望拥有面积更小、复杂度更小的乘法器。在本文中,我们解决了硬件描述语言(HDL)实现的问题,使用吠陀乘法器与Urdhva-Triyakbhyam经。吠陀乘法被用于有限脉冲响应(FIR)和无限脉冲响应(IIR)滤波器中,作为单精度浮点格式的基本构建块,增加了乘法系数的精度和范围。通过将该算法的性能与其他现有的乘法器(如移位和加法、数组和华莱士乘法器)进行比较,评估了该算法的潜力。实验结果表明,与现有的乘法方法相比,该算法在面积和复杂度方面都有很大的提高。
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引用次数: 7
Video event representation for abnormal event detection 用于异常事件检测的视频事件表示
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8326043
P. Kalaivani, S. Roomi, B. Jaishree
In recent years surveillance video analysis has become an emerging area of research as video surveillance system is used in all places for monitoring the happenings to ensure safety. Automatic video surveillance system is useful for all applications like military surveillance, traffic monitoring, health monitoring of elder people at home, street surveillance. It is essential to represent video events for the further processing like video browsing, retrieval, summarization. Hence this paper presents a novel method for representing visual events in a video for event detection. For efficient visual event representation shape and motion can be used as features. Hence, pyramid of HOG (PHOG) feature is extracted for shape information and then it is combined with Histogram of magnitude, orientation and entropy of Optical Flow (HMOEOF) to have motion information. The extracted features are used to train the SVM classifier in order to detect and classify the events in the video as normal or abnormal. The proposed method results an equal error rate of 16.71% which shows that it outperforms well compared to other event detection approaches.
近年来,随着视频监控系统在各个场所的应用,监控视频分析已成为一个新兴的研究领域。自动视频监控系统适用于军事监控、交通监控、居家老人健康监控、街道监控等各种应用。视频事件的表示是视频浏览、检索、总结等后续处理的基础。为此,本文提出了一种新的视频视觉事件表示方法,用于事件检测。为了有效的视觉事件表示,可以使用形状和运动作为特征。因此,提取HOG (PHOG)特征的金字塔作为形状信息,然后将其与光流的大小、方向和熵的直方图(HMOEOF)结合得到运动信息。提取的特征用于训练SVM分类器,以检测和分类视频中的事件是否正常或异常。该方法的误差率为16.71%,优于其他事件检测方法。
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引用次数: 3
High power UHF transmitters using SSPA for flight termination system in test range: A detailed study 高功率超高频发射机使用SSPA在测试范围内的飞行终端系统:详细研究
Pub Date : 2017-12-01 DOI: 10.1109/iccs1.2017.8326017
R. R. Sahani, U. Mandal, Anup Shrivastava, H. K. Ratha
This paper discusses on 1KW CW UHF transmitter systems based on solid state power devices used in flight termination system (FTS) in test range. Transmitters based on three different device technologies are studied. These power devices are silicon based bipolar junction transistor (Si-BJT), silicon based double diffused metal oxide transistor (Si-DMOS) and gallium nitride based high electron mobility transistor (GaN HEMT). It aims to present some of our requirement in terms of transmitter's performance in FTS applications. In such application where operating conditions and requirements are very stringent, wideband semiconductor technology is seen as a potential candidate over conventional device technology. A linear and efficient amplifier system is highly required along with good thermal management, broadband operation, reliability and size & weight. System performance parameters like output power, gain, harmonics and IMD are measured for each transmitter and compared. Gallium nitride being a wide band semiconductor and with its HEMT topology provides superior performance in terms of power density, linearity, efficiency and also more reliable.
本文讨论了基于固态功率器件的1KW连续超高频发射系统在试验靶场飞行终端系统(FTS)中的应用。研究了基于三种不同器件技术的发射机。这些功率器件是硅基双极结晶体管(Si-BJT)、硅基双扩散金属氧化物晶体管(Si-DMOS)和氮化镓基高电子迁移率晶体管(GaN HEMT)。它的目的是提出一些我们的要求,就发射机的性能在FTS应用。在这种操作条件和要求非常严格的应用中,宽带半导体技术被视为传统器件技术的潜在候选技术。一个线性和高效的放大器系统是高度需要的,以及良好的热管理,宽带操作,可靠性和尺寸和重量。对每个发射机的输出功率、增益、谐波和IMD等系统性能参数进行了测量和比较。氮化镓是一种宽带半导体,其HEMT拓扑结构在功率密度、线性度、效率和可靠性方面都具有优越的性能。
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引用次数: 6
Design and development of SRR loaded UWB metamaterial antenna for WLAN and WiMax applications 用于WLAN和WiMax应用的SRR负载超宽带天线的设计与开发
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8326003
V. Priyanka, T. Shanmuganantham
An UWB antenna with single SRR which is a metamaterial is presented for WLAN and WiMAX applications. This antenna consists of rectangular patch fed with a microstrip line, using FR4 substrate with thickness of 1.6 mm and dielectric constant of 4.2. The antenna has a partial ground plane which is loaded with a metamaterial unit cell to obtain a wide bandwidth having resonant characteristics at 2.4GHz (IEEE 802.11b) for WLAN and 5.8GHz (IEEE 802.16d) for WiMAX. The proposed metamaterial antenna has overall size of 20×30×1.6mm3 and VSWR < 2 for the resonating frequency, which provides a good impedance matching. For the proposed single SRR UWB antenna, simulation results for gain, radiation pattern, and VSWR along with minimum return loss has been obtained.
提出了一种用于WLAN和WiMAX应用的单SRR超材料超宽带天线。该天线采用厚度为1.6 mm、介电常数为4.2的FR4衬底,由微带线馈电的矩形贴片构成。该天线具有部分地平面,该地平面装载有超材料单元格,以获得在WLAN为2.4GHz (IEEE 802.11b)和WiMAX为5.8GHz (IEEE 802.16d)具有谐振特性的宽带。所设计的超材料天线整体尺寸为20×30×1.6mm3,谐振频率的驻波比< 2,具有良好的阻抗匹配性。对于所提出的单SRR超宽带天线,获得了增益、辐射方向图和驻波比以及最小回波损耗的仿真结果。
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引用次数: 0
Accident prone area detection using driver stress data base 基于驾驶员压力数据库的事故易发区域检测
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8325994
M. V. J. Krishnan
Accident experience of a particular location is more than the other locations of the same road, due to the road or environmental conditions. These locations are called as accident prone area. The accident prone areas are identified based on the observed number of crashes and regression analyses. But these methods have its own limitation. The goal of this study was to help the drivers as well as government to identify most stressful locations during driving and identify accident-prone areas before any accidents are occurring. In this study, we used heart rate variability (HRV) analysis for the driver stress level monitoring and link driver stress with an application on the head unit runs the infotainment system.
由于道路或环境条件的原因,某一特定地点的事故经历多于同一道路的其他地点。这些地点被称为事故多发地区。根据观察到的事故数量和回归分析确定事故易发区域。但这些方法有其自身的局限性。这项研究的目的是帮助司机和政府在驾驶过程中确定最紧张的位置,并在任何事故发生之前确定事故易发区域。在本研究中,我们使用心率变异性(HRV)分析驾驶员压力水平监测,并将驾驶员压力与运行信息娱乐系统的头部单元上的应用程序联系起来。
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引用次数: 1
Performance comparison of compressive sparse channel estimation and feedback in 5G for hyper MIMO system 5G超MIMO系统中压缩稀疏信道估计与反馈的性能比较
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8326008
V. Adinarayana, K. Krishna, P. R. Kumar, K. Lakshminarayana
Substantial MIMO (large-scale antenna systems, massive or hyper MIMO) differed from the current 4G technology because of preference in utilization of greater number of tune antennas over active terminals, Time-Division and Frequency-Division based Duplexing procedures. Generally Antennas are dependent on estimation accuracy of the channel matrix coefficients. In this work the Frequency division duplexing is compared with the Time division duplexing (TDD) type with feedback. Message passing methods convey multiple measurements is adopted to study the Sparsity of the hyper MIMO channels under frequency selective conditions. Initially the identification of active non-zero taps is done, followed by the channel coefficients estimation at these taps using M-AMP proposed technique. The output in FDD domain clearly manifests that the efficiency of the system is improved in terms of normalized error reduction for the parameters of SNR number of pilots and level of Sparsity.
大量MIMO(大规模天线系统,大规模或超MIMO)不同于当前的4G技术,因为它更倾向于利用更多数量的调谐天线,而不是有源终端、基于时分和频分的双工程序。一般来说,天线依赖于信道矩阵系数的估计精度。本文将分频双工与带反馈的时分双工(TDD)进行了比较。采用传递多个测量值的消息传递方法,研究了频率选择条件下超MIMO信道的稀疏性。首先进行有源非零抽头的识别,然后使用M-AMP提出的技术在这些抽头处估计信道系数。FDD域中的输出清楚地表明,系统在信噪比、导频数和稀疏度参数的归一化误差减小方面的效率得到了提高。
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引用次数: 1
Performance of sensor-MAC in an energy harvesting environment 能量收集环境下传感器- mac的性能研究
Pub Date : 2017-12-01 DOI: 10.1109/ICCS1.2017.8325981
S. Rao, S. Pillai
Wireless Sensor Networks has been an important area of research due to its wide and varied applications, especially in environmental and health monitoring. Most of the earlier work was focused on reducing the energy consumption in order to ensure long life of the network. Duty Cycling is one of the popular methods to achieve this. However, with the growing availability of energy harvesting solutions suitable for WSNs there is a renewed interest in optimizing performance of WSNs. In this work we analyze the performance of SMAC, one of the widely used MACs for WSNs with respect to the energy consumed. The energy consumption is compared with typical solar energy harvested. Based on the study we conclude that the protocol needs to be adaptable in terms of duty cycle based operation in order to effectively utilize the harvested energy.
无线传感器网络由于其广泛而多样的应用,特别是在环境和健康监测方面,已成为一个重要的研究领域。早期的大部分工作都集中在降低能耗上,以确保网络的长寿命。占空比是实现这一目标的常用方法之一。然而,随着适合无线传感器网络的能量收集解决方案的日益可用性,人们对优化无线传感器网络的性能重新产生了兴趣。在这项工作中,我们从能量消耗方面分析了SMAC的性能,SMAC是wsn中广泛使用的mac之一。能源消耗与典型的太阳能收获进行了比较。在此基础上,我们得出结论,该协议需要在基于占空比的操作方面具有适应性,以便有效地利用所收集的能量。
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引用次数: 1
期刊
2017 IEEE International Conference on Circuits and Systems (ICCS)
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