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2013 9th International Conference on Information, Communications & Signal Processing最新文献

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Design and development of a IPv6-based Smart Parking System 基于ipv6的智能停车系统的设计与开发
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782843
Y. Shah, Wesley Chee-Wah Tan, K. Durai
Electric vehicles will be a new paradigm for vehicle manufacturers due to the abundance and low cost of electricity, which will transform the landscape of existing gasoline vehicles. In the predictable near future, with the large scale manufacturing and utilization of electric vehicles, a new system which hosts and charges the electrical vehicles will be highly in need. Stemming from this development, this paper proposes a Smart Parking System, which embeds charging facilities in the parking slots of shopping malls or residential area, and continuously updates the parking slot status and shopping information for end-user to access through a smart-phone application using a designated IPv6 address. Such a Smart Parking System will ease the trouble of locating a parking slot, facilitate car charging and payment, and proffer the necessary shopping information. In short, the proposed system aims to make travel easier and more enjoyable.
由于电力的丰富和低成本,电动汽车将成为汽车制造商的新范式,这将改变现有汽油车的格局。在可预见的不久的将来,随着电动汽车的大规模生产和使用,将急需一种新型的电动汽车主机和充电系统。基于此,本文提出了一种智能停车系统,该系统将充电设施嵌入商场或住宅区的停车位,并不断更新停车位状态和购物信息,供终端用户通过指定IPv6地址的智能手机应用程序访问。这样的智能停车系统将减轻寻找停车位的麻烦,方便汽车充电和付款,并提供必要的购物信息。简而言之,拟议中的系统旨在使旅行更容易、更愉快。
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引用次数: 2
Signal model based compressed sampling for wireless sensor array network 基于信号模型的无线传感器阵列网络压缩采样
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782799
Kai Yu, Ming Yin, Liantao Wu, Zhi Wang
High sampling rate signal acquisition is challenging for wireless platform in terms of energy supply and transmission delay. Instead of performing compression at sensor node or having in-network processing for data been sampled at Nyquist rate, Compressive Sensing (CS) is applied to enable real time wireless sensor network with strict energy and processing constraints by significantly reducing the sensor data volume that needs to be transmitted over wireless channels. This is accomplished by random sampling at sensor nodes without extra processing and a mixture model based collaborative signal reconstruction in the fusion centre. This method increases signal reconstruction performance while reducing the volume of transmission data. Analysis of data from experiment and simulation are provided, and the performance are evaluated by implementing a prototype wireless platform.
高采样率信号采集对无线平台的能量供应和传输延迟提出了挑战。压缩感知(CS)不是在传感器节点上执行压缩,也不是对以奈奎斯特速率采样的数据进行网络内处理,而是通过显著减少需要通过无线信道传输的传感器数据量,在严格的能量和处理限制下实现实时无线传感器网络。这是通过在传感器节点上随机采样而无需额外处理和融合中心基于混合模型的协同信号重建来完成的。该方法在减少传输数据量的同时提高了信号重构性能。给出了实验和仿真数据分析,并通过实现原型无线平台对其性能进行了评估。
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引用次数: 0
An energy efficiency optimization method in bandwidth constrained IP over WDM networks 带宽受限的WDM网络上IP的能效优化方法
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782929
Bin Chen, Zheng-Ming Jiang, Robert K. F. Teng, Xiaohui Lin, Mingjun Dai, Hui Wang
Traffic grooming technique is one of the important candidates to save energy for networks. In order to minimize the energy consumption using Integer Linear Program (ILP) or Mixed Integer Linear Program (MILP), the assumption has to be made that all the connection requests are accepted in the IP over WDM network. However, a connection request may be blocked in a real network. In this paper, a bi-objective ILP is proposed for minimizing the energy consumption in a blocking IP over WDM network. It maximizes the throughput for a given network first, and then minimizes the energy consumption for the obtained maximized throughput. The simulation results show that the bi-objective method can save half of the energy consumed in the single-objective method if only the throughput is maximized.
流量疏导技术是网络节能的重要候选技术之一。为了使用整数线性规划(ILP)或混合整数线性规划(MILP)使能耗最小化,必须假设IP over WDM网络接受所有连接请求。但是,在真实网络中,连接请求可能会被阻塞。本文提出了一种双目标ILP算法,以使WDM网络上的阻塞IP的能量消耗最小。它首先最大化给定网络的吞吐量,然后最小化所获得的最大吞吐量的能耗。仿真结果表明,仅在吞吐量最大化的情况下,双目标方法可以节省单目标方法一半的能量。
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引用次数: 5
Two dimension nonnegative partial least squares for face recognition 二维非负偏最小二乘人脸识别
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782780
Yongxin Ge, Wenbin Bu, Dan Yang, Xin Feng, Xiaohong Zhang
For benefiting from incorporating the class information, partial least squares (PLS) and its two dimension version (2DPLS) have been widely employed in face recognition when extracting principal components. However, currently popular statistic methods, such as principal component analysis (PCA) and linear discriminant analysis (LDA), only learn holistic, not parts-based, representations which ignore available local features for face recognition. In this paper, we propose a novel approach to extract the facial features called two dimension nonnegative partial least squares (2DNPLS). Our approach can grab the local features via adding non-negativity constraint to the 2DPLS, and can also reserve the advantages of 2DPLS, which are both inherent structure and class information of images. For evaluating our approach's performance, a series of experiments were conducted on two famous face image databases include ORL and Yale face databases, which demonstrate that our proposed approach outperforms the compared state-of-art algorithms.
偏最小二乘及其二维版本(2DPLS)在提取主成分的人脸识别中得到了广泛的应用。然而,目前流行的统计方法,如主成分分析(PCA)和线性判别分析(LDA),只学习整体的,而不是基于部分的,忽略可用的局部特征的表示。在本文中,我们提出了一种新的方法来提取面部特征称为二维非负偏最小二乘(2DNPLS)。我们的方法通过在2DPLS中加入非负性约束来获取局部特征,同时也保留了2DPLS的优点,即图像的固有结构和类信息。为了评估我们的方法的性能,在两个著名的人脸图像数据库(ORL和Yale)上进行了一系列的实验,结果表明我们提出的方法优于比较的最先进的算法。
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引用次数: 0
A Physical-network-coding-based amplify and forward cooperation scheme 一种基于物理网络编码的放大和转发合作方案
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782899
Xiaomin Liu, G. Wang, Bo Li
Amplify and forward is a classical basic user cooperation scheme. In this paper, we propose a Physical-network-coding-based amplify and forward scheme. In time slot 2, users transmit the combinations of the partner's message and their own message through pseudo physical-layer network coding. This is the greater different from the classical scheme, where the user only transmits the partner's bits in cooperation. An outage probability analysis showing the improved performance is carried out, and computer simulations results are shown to agree with the analytical results.
放大转发是一种经典的基本用户协作方案。本文提出了一种基于物理网络编码的放大转发方案。在时隙2中,用户通过伪物理层网络编码传输伙伴的消息和自己的消息的组合。这与经典方案有很大的不同,在经典方案中,用户只在合作中传输伙伴的比特。对改进后的系统进行了故障概率分析,计算机仿真结果与分析结果一致。
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引用次数: 1
Comparative study of correlated shadowing loss model for wireless sensor networks 无线传感器网络相关阴影损耗模型的比较研究
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782975
Y. Chan, Cam Chung La, B. Soong
Accurate prediction of received signal strength is pivotal to reliable wireless communications. Unfortunately, wireless signals are often subject to random attenuation due to the environment around the receivers. One of the degradation factors that contributes to such loss is shadowing loss. It is well known that the shadowing losses of two nearby radio links are correlated. In this paper, we study the features of three existing models for correlated shadowing loss, namely autocorrelation model, cross-correlation model and joint path loss model, and establish the relationship between them.
准确预测接收到的信号强度对可靠的无线通信至关重要。不幸的是,由于接收器周围的环境,无线信号经常受到随机衰减的影响。造成这种损失的退化因素之一是阴影损失。众所周知,两个附近无线电链路的阴影损耗是相关的。本文研究了现有的三种相关阴影损失模型的特点,即自相关模型、互相关模型和联合路径损失模型,并建立了它们之间的关系。
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引用次数: 0
Integrating physical activity detection in heart rate variability and cardiac arrhythmia analysis 在心率变异性和心律失常分析中整合体力活动检测
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782957
H. Chan, Ming-Hung Hsu, Wen-Yen Hsu, Wei-Kang Hsu, S. Chen
Electrocardiogram (ECG) has been widely used in clinical diagnosis of cardiac arrhythmia. In particular, real-time detection of lethal cardiac arrhythmia such as ventricular tachycardia and ventricular fibrillation is important for patients with cardiovascular diseases. In addition, ST deviation during exercise indicates insufficient blood supply or infarction in myocardium, and autonomic imbalance implied from heart rate variability is associated with the mortality. However, physical activity (PA) usually confuses these interpretations. In this study, PA-related ECG analyses and real-time implementation on mobile devices will be addressed. Incorporating PA into ECG analysis not only avoids the confounding interpretation caused by PA, but also provides a way to probe cardiac functions during different PAs.
心电图(Electrocardiogram, ECG)已广泛应用于心律失常的临床诊断。特别是,实时检测致死性心律失常,如室性心动过速和心室颤动,对心血管疾病患者非常重要。此外,运动时ST段偏离表明血供不足或心肌梗死,心率变异性暗示的自主神经失衡与死亡有关。然而,体育活动(PA)通常会混淆这些解释。在本研究中,将讨论pa相关的心电分析和在移动设备上的实时实现。将PA纳入心电图分析不仅避免了PA引起的混淆解释,而且为不同PA期间心功能的探测提供了一种方法。
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引用次数: 0
Design of coded digital telemetry system for acoustic downhole channel with drilling noise 具有钻井噪声的井下声道编码数字遥测系统设计
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782969
W. K. Han, L. Kumar, Y. Guan, Sumei Sun
Logging-while-drilling (LWD) and measurement-while-drilling (MWD) applications have prompted the development of acoustic telemetry for retrieving downhole data. In this paper, a multilevel frequency shift keying (ML-FSK) modulation transceiver with pseudo-coherent differential energy detection is proposed and optimized for such acoustic telemetry applications. The motivation of employing the proposed multilevel FSK transceiver is its ability to cancel the effect of large drilling noise (drill bit noise and surface noise) with a low-complexity transceiver architecture, and its relative ease of dealing with oscillator or clock drifts caused by the harsh operating environment. To achieve better bit error rate (BER) over non-coherent demodulation while retaining the drilling noise cancellation capability, the receiver is modified to a pseudo-coherent demodulator. To further improve robustness, forward error correction (FEC) coding is applied and several coding options are evaluated over realistic acoustic drill string channel in the presence of drilling noise. The drill string channel investigated is made up of 110 segments, spans 1.011 km in length, has a characteristic comb-filter channel structure, with four pass bands (2nd, 3rd, 4th and 5th) used for telemetry.
随钻测井(LWD)和随钻测量(MWD)的应用促进了声波遥测技术的发展,以获取井下数据。本文提出了一种具有伪相干差分能量检测的多电平频移键控(ML-FSK)调制收发器,并对其进行了优化。采用所提出的多电平FSK收发器的动机是它能够以低复杂度的收发器架构消除大的钻井噪声(钻头噪声和地面噪声)的影响,并且相对容易处理由恶劣的操作环境引起的振荡器或时钟漂移。为了获得比非相干解调更好的误码率(BER),同时保持钻井降噪能力,接收器被修改为伪相干解调器。为了进一步提高鲁棒性,采用前向纠错(FEC)编码,并在存在钻井噪声的真实声学钻柱通道上评估了几种编码选项。所研究的钻柱通道由110段组成,长度为1.011 km,具有典型的梳状滤波器通道结构,具有4个通带(2、3、4和5)用于遥测。
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引用次数: 2
A new iterative reweighted least squares algorithm for the design of FIR filters 一种新的迭代加权最小二乘算法用于FIR滤波器的设计
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782854
Ruijie Zhao, Xiaoping Lai
It is known that iterative reweighted least squares (IRLS) algorithms are efficient techniques for the design of digital filters. The main computational load in IRLS algorithms is to solve a series of weighted least squares (WLS) subproblems, which usually needs the time-consuming evaluation of matrix inversion. This paper presents a new and very efficient IRLS algorithm, in which a simple iterative procedure is developed for solving those WLS subproblems. It is verified that the iterative procedure is guaranteed to converge and is computationally more efficient than using matrix inversion. Thus, the design efficiency is improved greatly, especially for high-order filters. Design examples and comparisons to some existing algorithms are given to show the excellent performance of the proposed algorithm.
迭代加权最小二乘(IRLS)算法是设计数字滤波器的有效方法。IRLS算法的主要计算量是求解一系列加权最小二乘(WLS)子问题,这些子问题通常需要耗时的矩阵反演求值。本文提出了一种新的、非常高效的IRLS算法,该算法采用了一种简单的迭代方法来求解WLS子问题。验证了迭代过程的收敛性和计算效率比矩阵反演法高。因此,大大提高了设计效率,特别是对于高阶滤波器。通过设计实例和与现有算法的比较,证明了该算法的优良性能。
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引用次数: 2
Channel estimation based on compressed sensing in high-speed underwater acoustic communication 高速水声通信中基于压缩感知的信道估计
Pub Date : 2013-12-01 DOI: 10.1109/ICICS.2013.6782892
Sichuan Guo, Zhiqiang He, Weipeng Jiang, Yuanbiao Ou, K. Niu, Y. Rong, Michael Caley, A. Duncan
The underwater acoustic (UA) channel is dispersive in both time and frequency with severe frequency-dependent signal attenuation. Efficient channel estimation and tracking are crucial to coherent high-rate UA communication. In this paper, we propose a new compressed sensing (CS) based channel estimation method with block-by-block channel tracking for UA communication. Compared with conventional channel estimation algorithms, the proposed method efficiently exploits the sparsity of the UA channel, and improves the channel tracking capability of UA communication system. The proposed algorithm was tested during our UA communication experiment conducted in December 2012 in the Indian Ocean off Rottnest Island, Western Australia. At a data rate of 8 kbps (QPSK constellations), average uncoded bit-error-rates (BERs) of 3% and 14% have been achieved over 1 km and 6 km ranges, respectively, using MMSE equalization based on the proposed channel estimation and tracking method.
水声(UA)信道在时间和频率上都是色散的,具有严重的频率相关信号衰减。高效的信道估计和跟踪是实现高速率UA通信的关键。在本文中,我们提出了一种新的基于压缩感知(CS)的UA通信信道估计方法,并逐块跟踪信道。与传统的信道估计算法相比,该方法有效地利用了UA信道的稀疏性,提高了UA通信系统的信道跟踪能力。我们于2012年12月在西澳大利亚罗特内斯特岛附近的印度洋上进行了UA通信实验,对所提出的算法进行了测试。在数据速率为8kbps (QPSK星座)的情况下,使用基于所提出的信道估计和跟踪方法的MMSE均衡,在1 km和6 km范围内的平均非编码误码率(ber)分别为3%和14%。
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引用次数: 2
期刊
2013 9th International Conference on Information, Communications & Signal Processing
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