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2015 IEEE International Conference on Electro/Information Technology (EIT)最新文献

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Space time block code for four time slots and two transmit antennas 四个时隙和两个发射天线的空时分组代码
Pub Date : 2015-10-08 DOI: 10.1109/EIT.2015.7293385
M. Norouzi, Edidiong Attang, Yuteng Wu, Robert B. Ellis, G. Atkin
In this paper a special space time coding is proposed for communication systems which is equipped with four time slots and two antennas. The launched code has full rate and full diversity and maximum likelihood (ML) decoding requires joint detection of four real symbols. Simulation results for bit error rate (BER) analysis show that the proposed STBC outperforms previously presented schemes.
针对四时隙双天线通信系统,提出了一种特殊的空时编码方法。发射码具有全码率和全码分集,最大似然译码需要对四个真实符号进行联合检测。误码率(BER)分析的仿真结果表明,所提出的STBC方案优于先前提出的方案。
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引用次数: 2
Social routing: A novel routing protocol for delay tolerant network based on dynamic connectivity 社交路由:一种新的基于动态连通性的容错网络路由协议
Pub Date : 2015-06-01 DOI: 10.1109/ICIS.2015.7166566
Q. Viet, Pham Van Phuoc, T. Q. Son, Lung Vu Duc
There exist numerous routing protocols proposed to allow efficient routing in the network where the end-to-end paths are spontaneously unstable. Such networks are termed as Delay-tolerant-networks (DTNs). The existing famous routing protocols still remain important issues that need to be solved. For example, Epidemic quickly drains the resources of the network; PROPHET causes the unbalanced traffic load distribution between the nodes, and Fair-Route increases the delivery delay. Moreover, such protocols do not have a signal to notify the buffers to remove redundant copies of a message when the first copy of that message has been successfully delivered to the destination. We therefore propose Social Routing, a contacts history based routing protocol, resolves those problems. Simulation results show that our proposed protocol significantly obtains the balanced traffic load distribution between nodes, reduces the delivery delay, and provides better delivery ratio compared with other protocols.
为了在端到端路径自发不稳定的网络中实现高效路由,提出了许多路由协议。这种网络被称为延迟容忍网络(dtn)。现有的著名路由协议仍然存在着需要解决的重要问题。例如,《Epidemic》迅速耗尽了网络资源;“PROPHET”会导致节点间的流量负载分配不均衡,“Fair-Route”会增加节点的下发延迟。此外,当消息的第一个副本成功地传递到目的地时,这样的协议没有信号通知缓冲区删除消息的冗余副本。因此,我们提出社交路由,一个基于联系人历史的路由协议,解决了这些问题。仿真结果表明,与其他协议相比,我们提出的协议显著地获得了节点间均衡的流量负载分配,减少了交付延迟,提供了更好的交付率。
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引用次数: 0
Path loss slope based cell selection and handover in heterogeneous networks 异构网络中基于路径损耗斜率的小区选择与切换
Pub Date : 2015-05-21 DOI: 10.1109/EIT.2015.7293389
M. Ahamed, S. Faruque
This paper presents a new strategy for Cell Selection and Handover in a Heterogeneous Networks based on the estimated Path Loss Slope value. It is shown that, there exists a free space propagation medium in all propagation environments due to Fresnel Zones and path loss slope within this zone is similar to free space propagation medium. This forms the basis of our development of the present work. The salient feature of the proposed work has two main considerations (a) The cell radius of Small Cells must be within the first Fresnel zone break point and the minimum inter-cell distance must be greater than twice of small cell radius, and (b) Optimum cell will be the one which path loss slope minimum. A prompt handover will take place when User Equipment (UE) crosses the cell boundary, because it will experience a rapid attenuation of signals due to a large attenuation slope (greater than free space). Once the handover is successful, a Ping-Pong effect is unlikely, since the difference in the receive signal level between the old and new cell increases rapidly. This will also reduce improper cell selection and call drop probability, thus enhancing the quality of service of the network as well.
提出了一种基于路径损失斜率估计的异构网络单元选择和切换策略。结果表明,由于菲涅耳带的存在,在所有传播环境中都存在自由空间传播介质,该传播介质内的路径损耗斜率与自由空间传播介质相似。这就是我们开展目前工作的基础。所提出的工作的显著特征有两个主要考虑因素(a)小单元的单元半径必须在第一个菲涅耳区断点内,最小单元间距离必须大于小单元半径的两倍,以及(b)最佳单元将是路径损失斜率最小的单元。当用户设备(UE)跨越小区边界时,由于衰减斜率大(大于自由空间),信号衰减迅速,因此会发生迅速切换。一旦交接成功,乒乓效应就不太可能发生,因为新旧细胞之间接收信号水平的差异会迅速增加。这也将减少不当的小区选择和掉线概率,从而提高网络的服务质量。
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引用次数: 6
A small footprint ultra-wideband multiple-input multiple-output antenna 一种小尺寸超宽带多输入多输出天线
Pub Date : 2015-05-21 DOI: 10.1109/EIT.2015.7293413
M. S. Khan, A. Capobianco, S. Asif, A. Iftikhar, B. Braaten, B. Ijaz, M. F. Shafique
A compact planar Ultra-wideband Multiple-input Multiple-output antenna with two identical monopoles is presented in this paper. These monopoles are kept very close to each other at a distance of 5.5mm. Wideband isolation is obtained over the complete spectrum with a novel decoupling structure attached to the ground plane composed of an inverted y-shaped stub and a combination of horizontal and vertical strips attached to each other. The analysis of the antenna performance with and without the decoupling structure is provided to demonstrate the effectiveness of the proposed decoupling structure. The proposed antenna measures only 43×28 mm2 and it is suitable for small handheld devices and future technologies based on UWB-MIMO.
提出了一种紧凑的平面超宽带双单极子多输入多输出天线。这些单极子彼此之间保持着5.5毫米的距离。在全频谱范围内实现宽带隔离的方法是采用一种新型的解耦结构,该结构由倒y形短段和相互连接的水平和垂直条带组合而成。通过对有解耦结构和无解耦结构的天线性能分析,验证了所提解耦结构的有效性。该天线的尺寸仅为43×28 mm2,适用于小型手持设备和基于UWB-MIMO的未来技术。
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引用次数: 1
Design and evaluation of reconfigurable ultrasonic testing system 可重构超声检测系统的设计与评价
Pub Date : 2015-05-21 DOI: 10.1109/EIT.2015.7293359
Vidya Vasudevan, Boyang Wang, Pramod Govindan, J. Saniie
Ultrasonic data acquisition systems used in the medical imaging and nondestructive testing applications have critical requirements in order to be capable of evaluating and prototyping ultrasound applications. In this paper, a system-on-chip (SoC) based reconfigurable ultrasonic testing system (RUTS) is developed for implementation of high-speed ultrasonic signal processing algorithms. RUTS comprises of a fully reconfigurable analog front-end (AFE) sub-system for efficient data acquisition, and a Xilinx Zynq SoC module for dynamic feature control. Computationally intensive ultrasonic signal processing algorithms are implemented on Zynq SoC using hardware-software co-design methodologies. AFE supports up to 8 transducers for phased-array implementation. This Linux-based system is analyzed for ultrasonic data compression implementation providing a very versatile environment for further ultrasound system development and research work.
超声数据采集系统用于医学成像和无损检测应用,为了能够评估和原型超声应用的关键要求。本文开发了一种基于片上系统(SoC)的可重构超声检测系统(RUTS),用于实现高速超声信号处理算法。RUTS包括一个完全可重构的模拟前端(AFE)子系统,用于高效的数据采集,以及一个用于动态特征控制的Xilinx Zynq SoC模块。计算密集型超声信号处理算法在Zynq SoC上采用软硬件协同设计方法实现。AFE支持多达8个换能器相控阵实施。本文分析了基于linux的超声数据压缩系统的实现,为进一步的超声系统开发和研究工作提供了一个非常通用的环境。
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引用次数: 0
A new method for the segmentation of algae images using retinex and support vector machine 基于支持向量机的藻类图像分割新方法
Pub Date : 2015-05-21 DOI: 10.1109/EIT.2015.7293369
Kyle Dannemiller, Kaveh Ahmadi, E. Salari
Bodies of freshwater act as home to many different types of organisms, including algae. These algae can cause harm when something called a harmful algal bloom takes place, and as such it is desired to classify algae in micro-image samples from the freshwater bodies before a bloom occurs. This paper presents a novel method for improving the quality of the algae micro-image and segmenting the algae in the micro-image, two of the steps involved in the automatic recognition and classification of algae in images. First, the algae image quality was improved through the use of the Retinex enhancement technique. Then, the algae in the improved quality image was segmented from the background using a support vector machine. Experimental results indicate that the detection rate of the proposed method is over 95%.
淡水水体是包括藻类在内的许多不同类型生物的家园。当所谓的有害藻华发生时,这些藻类会造成伤害,因此需要在藻华发生之前对淡水水体的微图像样本中的藻类进行分类。本文提出了一种提高微藻图像质量和对微藻图像进行分割的新方法,这是图像中藻类自动识别和分类的两个步骤。首先,利用Retinex增强技术提高藻类图像质量。然后,利用支持向量机将改进后的图像中的藻类从背景中分割出来。实验结果表明,该方法的检出率在95%以上。
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引用次数: 15
Fuzzy inference for service migration strategy 服务迁移策略的模糊推理
Pub Date : 2015-05-21 DOI: 10.1109/EIT.2015.7293322
Yanjun Zuo
Service migration is an important approach for service availability and system survivability in a security incident. When a system is under attack and some platforms have been compromised, the services executed on those platforms must be migrated to other platforms in order for them to be continuously provided to users. Service migration strategy is the guideline and high-level decision regarding what (e. g., service programs, the service state and the data space) are moved from one platform to another and how. In this paper, we present a fuzzy inference system to determine the most appropriate strategy for service migration in a security incident scenario. Our approach uses expert knowledge as linguistic reasoning rules and takes as input the current system state such as the damage degree of the service programs, the complexity of those service programs, and the available network capability to securely transfer service programs and data to a new platform. Simulations show that the fuzzy inference system is effective in determining the most appropriate strategy for service migration given the current system state and environment information.
服务迁移是安全事件中服务可用性和系统生存性的重要方法。当系统受到攻击并且某些平台已被破坏时,必须将在这些平台上执行的服务迁移到其他平台,以便继续向用户提供服务。服务迁移策略是关于将什么(例如,服务程序、服务状态和数据空间)从一个平台移动到另一个平台以及如何移动的指导方针和高级决策。在本文中,我们提出了一个模糊推理系统来确定在安全事件场景中最合适的服务迁移策略。我们的方法使用专家知识作为语言推理规则,并将当前系统状态(如服务程序的损坏程度、服务程序的复杂性以及可用的网络能力)作为输入,以安全地将服务程序和数据传输到新的平台。仿真结果表明,在给定当前系统状态和环境信息的情况下,模糊推理系统能够有效地确定最合适的服务迁移策略。
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引用次数: 1
A complex adaptive Harmonic IIR notch filter 一种复杂自适应谐波IIR陷波滤波器
Pub Date : 2015-05-21 DOI: 10.1109/EIT.2015.7293327
Li Tan, Haiyan Zhang, Jean Jiang
A complex adaptive Harmonic IIR notch filter is proposed for estimating and tracking the frequency of periodic complex signals in a noisy harmonic environment. The transfer function of the developed notch filter consists of cascaded first-order complex transfer functions whose notch frequencies are constrained to the fundamental and harmonic frequencies. The least mean squares (LMS) algorithm is developed and a formula to determine the stability bound for the algorithm is derived. In addition, an improved simple scheme is devised to prevent the adaptive algorithm from converging to its local minima of the mean square error (MSE) function when the tracked signal fundamental frequency changes. Computer simulations validate the performance of the developed algorithm.
提出了一种复杂自适应谐波陷波滤波器,用于噪声谐波环境下周期性复杂信号的频率估计和跟踪。所开发的陷波滤波器的传递函数由级联的一阶复传递函数组成,其陷波频率被限制为基频和谐波频率。提出了最小均方算法,并推导了确定该算法稳定性界的公式。此外,设计了一种改进的简单方案,防止自适应算法在跟踪信号基频变化时收敛到均方误差(MSE)函数的局部最小值。计算机仿真验证了所开发算法的性能。
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引用次数: 0
Radiation performance and Specific Absorption Rate (SAR) analysis of a compact dual band balanced antenna 一种紧凑型双波段平衡天线的辐射性能和比吸收率分析
Pub Date : 2015-05-21 DOI: 10.1109/EIT.2015.7293415
A. Iftikhar, M. Masud, M. N. Rafiq, S. Asif, B. Braaten, M. S. Khan
This paper presents a compact dual-band dipole antenna with meander line radiating elements. The proposed antenna has a balanced structure with dimensions of 35×6×1.52 mm3, and mounted on a 36.2 × 100 mm2 floating ground plane. The balanced operation of the design is validated by incorporating a differential feed in the software simulation and a 180 ° hybrid junction is used for measurement with the network analyzer to verify the balanced concept of the prototype. Simulated and measured results of the S-parameters along with the de-tuning of the antenna in the presence of the human body shows good agreement. Moreover the proposed design is used as an exposure source to the simulated human head model. The human head is modeled as six layers in the Electromagnetic (EM) software HFSS to study the interaction between the proposed balanced antenna and the human head model. The Electric field (E-field) distribution in the six layers of the human head model is shown to estimate the penetration of the field when the antenna is placed at a distance of 7 mm from the proposed design. Also Local Specific Absorption Rates (SARs) and average SARs simulation results at 3.78 GHz and 4.29 GHz are shown. The SARs analysis showed that in all the six layers of the human head model, local SAR values are greater in fat and Cerebrospinal fluid (CSF) for both the frequencies while the average SAR values are not very high.
本文提出了一种具有弯曲线辐射元件的紧凑双频偶极子天线。该天线采用平衡结构,尺寸为35×6×1.52 mm3,安装在36.2 × 100 mm2的浮地平面上。通过在软件仿真中加入差分进给,验证了设计的平衡运行,并使用180°混合结与网络分析仪进行测量,以验证原型的平衡概念。在人体存在的情况下,对天线的s参数进行了仿真和实测,结果与实验结果吻合较好。此外,所提出的设计被用作模拟人头模型的暴露源。在电磁软件HFSS中对人体头部进行了六层建模,研究了所提出的平衡天线与人体头部模型之间的相互作用。当天线放置在距离所提出的设计7毫米的距离时,显示了人类头部模型六层中的电场(E-field)分布,以估计场的穿透。同时给出了3.78 GHz和4.29 GHz下的局部比吸收率(sar)和平均sar模拟结果。SAR分析表明,在人体头部模型的所有六层中,脂肪和脑脊液(CSF)的局部SAR值在两个频率下都较大,而平均SAR值不是很高。
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引用次数: 3
VLSI implementation of an improved multiplier for FFT computation in biomedical applications 生物医学应用中FFT计算的改进乘法器的VLSI实现
Pub Date : 2015-05-21 DOI: 10.1109/EIT.2015.7293316
A. Ajay, Dr. R. Mary Lourde
Discrete Fourier Transform (DFT) is a fundamental Digital Signal Processing domain transformation technique used in many applications for frequency analysis and frequency domain processing. Fast Fourier Transform (FFT) is used for signal processing applications. It consists of addition and multiplication operations, whose speed improvement will enhance the accuracy and performance of FFT computation for any application. It is an algorithm to compute Discrete Fourier Transform (DFT) and its inverse. DFT is obtained by decomposing a sequence of values into components of different frequencies. FFT can compute DFT in O(N log N) operations unlike DFT computation that takes O(N2) arithmetic operations. This reduces computation time by several orders of magnitude and the improvement is roughly proportional to N / log N. Present day Research focus is on performance improvement in computation of FFT specific to field of application. Many performance improvement studies are in progress to implement efficient FFT computation through better performing multipliers and adders. Electroencephalographic (EEG) signals are invariably used for clinical diagnosis and conventional cognitive neuroscience. This work intends to contribute to a faster method of computation of FFT for analysis of EEG signals to classify Autistic data.
离散傅立叶变换(DFT)是一种基本的数字信号处理域变换技术,在频率分析和频域处理中有着广泛的应用。快速傅里叶变换(FFT)用于信号处理应用。它由加法和乘法运算组成,其速度的提高将提高FFT计算的准确性和性能,适用于任何应用。它是一种计算离散傅立叶变换(DFT)及其逆的算法。DFT是通过将一系列值分解成不同频率的分量来获得的。FFT可以在O(N log N)次运算中计算DFT,而DFT计算需要O(N2)次算术运算。这将计算时间减少了几个数量级,并且改进大致与N / log N成正比。目前的研究重点是针对特定应用领域的FFT计算性能改进。许多性能改进研究正在进行中,通过性能更好的乘法器和加法器来实现高效的FFT计算。脑电图(EEG)信号不可避免地用于临床诊断和传统认知神经科学。本工作旨在为脑电图信号分析提供一种更快的FFT计算方法,以对自闭症数据进行分类。
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引用次数: 8
期刊
2015 IEEE International Conference on Electro/Information Technology (EIT)
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