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2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)最新文献

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Improved passenger ticket control in easily accessible public city trams 改善城市公共有轨电车的乘客票务管制
Roman Khoeblal, Chayapol Kamyod, T. Laohapensaeng, R. Chaisricharoen
RFID/NFC-based tickets in public transportation have become common over the years. The use of this technology brought many benefits along with it. As things were getting easier for passengers, ticket control in the majority of the tram/train network in European cities have not been changed a lot. Manual inspection of tickets is still being done by a ticket inspector onboard. It takes a fair amount of time for ticket inspectors to manual validate the tickets and it is not done on every ride. Therefore, randomly inspection of tickets and the processing time creates lots of opportunities for fare dodgers to hop on and off the tram without holding a valid ticket. This paper proposes a system which aims at reducing RFID ticket inspection time as well as simplification of the ticket inspection process. The results of the simulation show that it is possible to reduce inspection/validating time compared to the traditional method of manual inspection for every tram and possibly discourage fare dodging substantially.
近年来,基于RFID/ nfc的车票在公共交通中变得越来越普遍。这项技术的使用带来了许多好处。对于乘客来说,事情变得越来越容易,欧洲城市大多数电车/火车网络的票务控制并没有太大改变。船上的检票员仍在进行人工检票。检票员需要花费相当多的时间来手动验证车票,而且并不是每次都这样做。因此,对车票和处理时间的随机检查为逃票者创造了很多机会,他们可以在没有持有有效车票的情况下上下车。本文提出了一种以减少RFID检票时间,简化检票流程为目的的系统。仿真结果表明,与传统的人工检查每辆有轨电车的方法相比,该方法有可能减少检查/验证时间,并可能大大减少逃票行为。
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引用次数: 2
Proposal of minimization problem based lightness modification for protanopia and deuteranopia 基于最小化问题的原色盲和暗色盲亮度修正方法的提出
Meng Meng, G. Tanaka
Color is important for the visual information. However, sometimes the information of color cannot be correctly received by some humans. Those visually impaired humans (protanopes, deuteranopes, and so on) cannot recognize some color information. In our paper, a lightness modification method which can convey the information of color to protanopes and deuteranopes is proposed. Considering differences of colors in an input image, the proposed method adjusts the output lightness for protanopes and deuteranopes. Experimental results show effectiveness of our proposed method.
颜色对于视觉信息很重要。然而,有时颜色的信息不能被一些人正确地接收。那些视力受损的人(原色人、后色人等等)不能识别某些颜色信息。本文提出了一种能将颜色信息传递给正氢和氘氢的光度修饰方法。考虑到输入图像中颜色的差异,该方法调整了原烷和氘烷的输出亮度。实验结果表明了该方法的有效性。
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引用次数: 6
Design of IIR filters with constraints using multi-swarm PSO 基于多群粒子群算法的约束IIR滤波器设计
Haruna Aimi, K. Suyama
In this study, IIR (Infinite Impulse Response) filters having a null and the specified error in a stop band are designed using PSO (Particle Swarm Optimization). A new penalty function is introduced to an objective function in addition to the conventional penalty function that ensures the stability of IIR filters. Furthermore, the specified error is restricted in the objective function. A design problem based on the minimax criteria is formulated as the non-linear optimization problem and cannot be solved easily. In addition, local minima are brought to the objective function because of adding such constraints. PSO is applicable to solve such non-linear optimization problems. However, it is reported that a local minimum stagnation occurs due to the strong intensification characteristic. Therefore, it is important to avoid the local minimum stagnation. In our method, a particle reallocation strategy is applied when the stagnation occurs. The effectiveness of our method is verified through several design examples.
在本研究中,无限脉冲响应(IIR)滤波器具有零和指定误差在一个停止带使用PSO(粒子群优化)设计。为了保证IIR滤波器的稳定性,在目标函数中除了引入传统的惩罚函数外,还引入了新的惩罚函数。此外,指定误差在目标函数中受到限制。基于极大极小准则的设计问题被表述为不容易求解的非线性优化问题。此外,由于这些约束的加入,使得目标函数具有局部极小值。粒子群算法适用于求解此类非线性优化问题。然而,据报道,由于强强化特性,会出现局部最小停滞。因此,避免局部最小停滞是很重要的。在我们的方法中,当发生停滞时,采用粒子重新分配策略。通过几个设计实例验证了该方法的有效性。
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引用次数: 1
A linear transconductor utilizing body transconductance for low-power and low frequency applications 一种利用体跨导的线性变换器,用于低功率和低频应用
T. Ohbuchi, F. Matsumoto
Low-frequency and low-power circuits for medical devices used in daily life, such as biomedical implants, are required. For the applications, a linear low-transconductance and low-power transconductor is needed. In this paper, a low-transconductance linear transconductor which is improved in a power efficiency of the transconductance utilizing control of the body transconductances of the input transistors is proposed. The validity of proposed transconductor is confirmed by simulations on condition that the transconductance was 1.0 uS. The linearity of the proposed transconductor, whose linear input range is 112 mV, is improved. The power consumption is 976 nW, and the power consumption of the conventional transconductor is reduced by 27%. Considering the linearity of transfer characteristics and power efficiency, availability of the proposed transconductor is confirmed.
日常生活中使用的医疗设备(如生物医学植入物)需要低频和低功耗电路。对于这些应用,需要一种线性低跨导、低功耗的跨导导体。本文提出了一种利用控制输入晶体管的本体跨导来提高跨导功率效率的低跨导线性跨导电路。在跨导为1.0 uS的条件下,通过仿真验证了所提出的跨导的有效性。该晶体管的线性输入范围为112 mV,其线性度得到了改善。功耗为976 nW,比传统晶体管功耗降低27%。考虑到传输特性的线性性和功率效率,证实了所提出的晶体管的有效性。
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引用次数: 2
Bidirectional circular patch antenna for WLAN applications 用于WLAN应用的双向圆形贴片天线
Kathawut Rojanasaroch, T. Laohapensaeng
This paper presents a low-profile and compact size bi-directional antenna for WLAN applications. The antenna consists of two conductor patches placing in parallel and excited by a voltage source between patch. The simulated results have shown that the antenna processes the bi-directional with the directivity of around 6 dBi at the frequency of 2.4 GHz. The HPBW in E-plane and H-plane are 70 degree and 74 degree, respectively. Also, the antenna has a good input return loss of around 40 dB at the design frequency.
本文提出了一种用于WLAN应用的低轮廓、小尺寸双向天线。该天线由两个平行放置的导体贴片组成,并由贴片之间的电压源激发。仿真结果表明,该天线在2.4 GHz频率下处理双向信号,指向性约为6 dBi。e平面和h平面的HPBW分别为70°和74°。此外,该天线在设计频率下具有良好的输入回波损耗,约为40 dB。
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引用次数: 1
Effective heart sounds detection method based on signal's characteristics 基于信号特征的有效心音检测方法
A. H. Salman, Ricky Saputra, T. Mengko, R. Mengko, B. Anggoro
This paper proposes a method for detecting primary heart sounds (S1 and S2), extra heart sounds (S3 and S4), murmur, and other abnormal sounds (split, click, and ejection click). The method uses the signal envelope, extracted from Shannon's Energy, as its starting point for the detection process. The process distinguishes each heart sound by analysing the signal's characteristic (peak frequency, peak duration, peak interval, total power and amplitude), extracted from each signal segment. The result demonstrates that our signal characteristics analysis on the signal envelope could effectively detect the primaries and abnormal heart sounds‥
本文提出了一种检测主心音(S1和S2)、附加心音(S3和S4)、杂音和其他异常音(劈裂声、咔嗒声和射音)的方法。该方法使用从香农能量中提取的信号包络作为检测过程的起点。该过程通过分析从每个信号段中提取的信号特征(峰值频率、峰值持续时间、峰值间隔、总功率和幅度)来区分每种心音。结果表明,我们在信号包络上的信号特征分析可以有效地检测出原发性心音和异常心音
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引用次数: 9
Analysis of Affine Projection Normalized Correlation Algorithm 仿射投影归一化相关算法分析
S. Koike
This paper proposes and develops a statistical analysis of Affine Projection Normalized Correlation Algorithm (AP-NCA) which is a combination of the Affine Projection Algorithm (APA) and Normalized Correlation Algorithm (NCA) for use in complex-domain adaptive filters. For impulse noise, two types are considered: one is found in observation noise and another at filter input. Through experiments with simulations and theoretical calculations of filter convergence, we demonstrate that the proposed AP-NCA is effective in making adaptive filters converge faster when the filter inputs are correlated, and robust in impulsive noise environments. It is observed that the theoretical convergence curves generally exhibit good agreement with the simulation results which shows that the analysis is valid for practical use.
本文提出并发展了一种用于复域自适应滤波器的仿射投影归一化相关算法(AP-NCA),该算法是仿射投影算法(APA)和归一化相关算法(NCA)的结合。对于脉冲噪声,考虑两种类型:一种存在于观测噪声中,另一种存在于滤波器输入。通过滤波器收敛的仿真实验和理论计算,我们证明了所提出的AP-NCA可以有效地使自适应滤波器在滤波器输入相关时收敛更快,并且在脉冲噪声环境下具有鲁棒性。理论收敛曲线与仿真结果基本吻合,表明该分析具有较好的实际应用价值。
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引用次数: 1
Design of reject frequency band and multi band CPW-fed monopole antenna with control notched band for WLAN/WiMAX applications 无线局域网/WiMAX应用中带控制陷波带的抑制频带和多频带cpw馈电单极天线设计
N. Tangthong, Rattapon Jeenawong, S. Akatimagool
This paper aims to design the multiband monopole antenna by controlling notched band for WLAN/WiMAX application. The proposed monopole antenna consists of CPW-fed structure, radiating circular patch and symmetrical slot line on ground plane. By splitting the symmetrical slot line on ground plane nearly feed line, the monopole antenna can control the reject band at the usable cutoff frequency. The multiband antenna of center frequency at 2.5, 3.5 and 5.5 GHz is realized by splitting symmetrical slot line on radiating patch and ground plane, respectively. The results found that the proposed antenna can operate the triple band at frequency range of 2.01–2.77 GHz, 3.10–4.03 GHz and 4.77–6.96 GHz. The radiation pattern was shown likly omni-directional and bi-directional in H-plane and E-plane for all frequency band.
本文旨在设计用于WLAN/WiMAX应用的控制陷波带的多波段单极天线。所提出的单极天线由cpw馈电结构、圆形贴片和对称地平面槽线组成。单极天线通过在地平面近馈线上分割对称槽线,将抑制频带控制在可用截止频率上。通过在辐射贴片和地平面上分别分割对称槽线,实现了中心频率为2.5、3.5和5.5 GHz的多波段天线。结果表明,该天线可在2.01-2.77 GHz、3.10-4.03 GHz和4.77-6.96 GHz三频段工作。在所有频段内,辐射方向图在h面和e面均表现为全向和双向。
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引用次数: 0
Color correction on digital image based on reference color charts surrounding object 基于周围物体参考色表的数字图像色彩校正
C. Sinthanayothin, W. Bholsithi, N. Wongwaen
The image color may deviate from the actual colors of the object due to the lighting conditions and different illumination. Therefore, this paper proposes an algorithm for correcting the colors of digital image in various lighting conditions based on matrix calculations from all reference color charts surrounding the object. The six transformation matrix M for color correction have been calculated from six color charts surrounding the object rather than a single color chart. Then the automatic detection and recognition of the target color charts technique has been performed. Next, the image is divided into small grids. The matrix M elements at all grid's corners were calculated based on distance from each color chart position to the considering grid's corner position. Then, the matrix M elements for each pixel in the considering grid were determined by interpolation from the matrix elements of four corners nearby. Finally, the matrix M for each pixel is applied to complete the color correction. This technique has been tested on a table of 132 colors which taken in four different lighting conditions. The results have shown that the color correction technique can be applied for work that requires accurate color matching as a less costly. For our work, this technique will be applied to the teeth photos in order to match the tooth color with the appropriated dental crowns for further development.
由于光照条件和不同的照度,图像颜色可能会偏离物体的实际颜色。因此,本文提出了一种基于物体周围所有参考色表的矩阵计算的各种光照条件下数字图像颜色校正算法。颜色校正的6个变换矩阵M是从物体周围的6个色图而不是单个色图中计算出来的。在此基础上,实现了目标颜色图的自动检测与识别技术。接下来,将图像划分为小网格。根据每个色图位置到考虑网格角位置的距离计算所有网格角上的矩阵M元素。然后,对考虑网格中相邻四角的矩阵元素进行插值,确定每个像素的矩阵M元素;最后,对每个像素应用矩阵M来完成颜色校正。这项技术已经在一张有132种颜色的桌子上进行了测试,这些桌子在四种不同的照明条件下拍摄。结果表明,色彩校正技术可以较低成本地应用于需要精确色彩匹配的工作。在我们的工作中,这项技术将应用于牙齿照片,以使牙齿的颜色与合适的牙冠相匹配,以便进一步发展。
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引用次数: 1
Analysis of unstable periodic solution of nonlinear circuits using Haar wavelet transform 用Haar小波变换分析非线性电路的不稳定周期解
Kohei Takamatsu, Tatsuya Nakabayashi, S. Moro
It has been reported that unstable periodic solution of a dynamical systems make the chaos control easier. But it is difficult to find unstable periodic solution because of a few numerical errors in numerical calculations. Therefore, in this study, we find unstable periodic solution using Haar wavelet transform. Haar wavelet can be easily treated and differential and integral operator matrices are easily derived by using a block pulse function. Therefore it can be adapted to time variable circuit and nonlinear circuit. Furthermore, it can analyze a range of the singular point neighborhood more precisely. In this paper, we show the method to find unstable periodic solution of the autonomous nonlinear circuit using an oscillator with 5th-power nonlinear order characteristic and prove that it is possible to find unstable periodic solution.
已有研究表明,动态系统的不稳定周期解使混沌控制变得更加容易。但由于在数值计算中存在一些数值误差,求解不稳定周期解比较困难。因此,在本研究中,我们利用Haar小波变换寻找不稳定周期解。利用块脉冲函数可以很容易地处理哈尔小波,并且可以很容易地导出微分和积分算子矩阵。因此,它可以适应时变电路和非线性电路。此外,该方法还能更精确地分析奇异点邻域范围。本文给出了利用5次非线性阶特性的振荡器求解自主非线性电路不稳定周期解的方法,并证明了求解不稳定周期解的可能性。
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引用次数: 2
期刊
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)
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