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2019 International Conference on Innovative Trends in Computer Engineering (ITCE)最新文献

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Cross-tier Interference Reduction in MIMO Heterogeneous Network with Imperfect CSI 不完全CSI下MIMO异构网络的跨层干扰抑制
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646561
E. Maher, A. El-Mahdy
The spectrum insufficiency has become a major problem in wireless communication systems due to increasing the demand on broadband applications. Heterogeneous macro-small cell network, Device-to-device (D2D) communications, and multiple-input multiple-output (MIMO) systems all are promising technologies to improve the spectrum efficiency and the data rate in future cellular networks. In this paper, the problem of cross-tier interference reduction in MIMO in heterogeneous macro-small cell network enabling D2D communications is investigated in presence of imperfect Channel State Information (CSI). Underlaying D2D communications, sharing the same resource of the cellular network, causes co-channel interference. Two precoding selection methods are used in the D2D underlaying MIMO system. The first one aims to maximize the rate of the D2D user while the second one aims to reduce the cross-tier interference between the D2D and the cellular user. Simulations are performed to investigate the effect of imperfect CSI on the system performance using the two selection methods.
随着宽带应用需求的不断增加,频谱不足已成为无线通信系统中的一个主要问题。异构大小蜂窝网络、设备对设备(D2D)通信和多输入多输出(MIMO)系统都是未来蜂窝网络中提高频谱效率和数据速率的有前途的技术。本文研究了在不完全信道状态信息(CSI)存在的情况下,实现D2D通信的异构宏小蜂窝网络中MIMO的跨层干扰抑制问题。底层D2D通信,共享蜂窝网络的相同资源,导致同信道干扰。在D2D底层MIMO系统中采用了两种预编码选择方法。第一个目标是最大化D2D用户的速率,而第二个目标是减少D2D和蜂窝用户之间的跨层干扰。通过仿真研究了两种选择方法下不完全CSI对系统性能的影响。
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引用次数: 0
H-Ahead Multivariate microclimate Forecasting System Based on Deep Learning 基于深度学习的H-Ahead多元小气候预报系统
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646540
Esraa Elhariri, S. Taie
Monitoring indoor environmental quality is an essential aspect for resident comfort and preserving the indoor materials quality. Environmental quality affected by large continuous fluctuations in a lot of environmental variables. Reducing and optimizing the effect of this fluctuations needs to operate Heating, ventilation, and air conditioning (HVAC) system continuously resulting in large energy consumption. This paper aims to predict a well defined future plan that operates HVAC system, taking into consideration optimizing energy consumption. The key advantage of this plan is its dependency on h-ahead multivariate time series prediction using deep learning to predict the air quality of near future. Experimental results showed that Gated Recurrent Unit (GRU) model using the indoor microclimate parameters (Temperature, humidity, and CO2) has the best accuracy for the prediction the three parameters with average Root Mean Square error of 4.0474125 for all parameters.
监测室内环境质量是保证居民舒适、保证室内材料质量的重要方面。环境质量受许多环境变量的连续波动影响较大。减少和优化这种波动的影响需要持续运行暖通空调(HVAC)系统,这导致了大量的能源消耗。本文旨在预测一个明确的未来计划,运行暖通空调系统,考虑优化能源消耗。该方案的关键优势在于依赖于h-ahead多元时间序列预测,利用深度学习来预测近期的空气质量。实验结果表明,采用室内小气候参数(温度、湿度和二氧化碳)的门控循环单元(GRU)模型对三个参数的预测精度最好,所有参数的平均均方根误差为4.0474125。
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引用次数: 16
Developing Phase-Shift PWM-Based Distributed MPPT Technique for Photovoltaic Systems 基于相移pwm的光伏系统分布式MPPT技术研究
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646399
A. Elmelegi, M. Aly, E. Ahmed
Multilevel inverters have several advantages over conventional two level inverter, due to their modularity and decreased filter size. Multilevel inverters can be derived using both fundamental frequency switching and higher frequency switching as well. This paper focuses on using phase-shift pulse width modulation technique (PWM) for maximum power point tracking (MPPT) in distributed photovoltaic (PV) systems. The proposed modulation technique overcomes the problem of partial shading conditions by generating the modulation signal for each PV module that corresponds to the maximum power point tracking MPPT. The proposed method can be extended to cover any number of PV modules without any control complexity and lookup tables. The performance of the proposed technique has been simulated and tested using MATLAB SIMULINK environment and investigated with different radiation and loading conditions.
多电平逆变器由于其模块化和减小滤波器尺寸,比传统的两电平逆变器有几个优点。多电平逆变器可以同时使用基频开关和高频开关。本文主要研究了将相移脉冲宽度调制技术(PWM)用于分布式光伏系统的最大功率点跟踪(MPPT)。提出的调制技术通过为每个光伏模块生成与最大功率点跟踪MPPT对应的调制信号,克服了部分遮阳条件的问题。所提出的方法可以扩展到覆盖任何数量的光伏模块,而不需要任何控制复杂性和查找表。在MATLAB SIMULINK环境下对该技术的性能进行了仿真和测试,并对不同的辐射和负载条件进行了研究。
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引用次数: 8
Characterization of the sources of degradation in remote sensing satellite images 遥感卫星图像退化源的特征
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646604
Mohammed S. Hussein, Mohamed Hanafy, T. Mahmoud
Remote sensing images are formed by the acquisition of the electromagnetic energy reflected or emitted from an object under observation using an optical system. During this process the acquired data is lost due to several degradation effects including atmospheric turbulence, relative motion between observed object and sensor, and lenses-of-focus, hence causing severe blurring in satellite digital images. This blurring effect can be mathematically modeled using point spread function in the image’s spatial domain, or equivalently using the optical transfer function in the image’s frequency domain. The degree of spreading blurring of the point object is a measure of the quality of an imaging system. The key result of this paper is investigating the main sources of image degradation and modeling their effects on the quality of images acquired by remote sensing satellite systems.
遥感图像是利用光学系统获取被观测物体反射或发射的电磁能而形成的。在此过程中,由于大气湍流、被观测物体与传感器之间的相对运动以及焦距等几种退化效应,采集到的数据会丢失,从而导致卫星数字图像出现严重模糊。这种模糊效果可以使用图像空间域中的点扩散函数进行数学建模,或者等效地使用图像频域中的光学传递函数。点物体的扩散模糊程度是衡量成像系统质量的一个指标。本文的主要成果是研究了图像退化的主要来源,并建立了它们对遥感卫星系统获取的图像质量的影响模型。
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引用次数: 0
Effect of Application Types on the Performance of WiFi Networks 应用类型对WiFi网络性能的影响
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646325
A. Mohamed, A. Agamy
The explosive increase in the use of smartphones and digital devices lead to an increase in the deployment of WiFi access points (IEEE802.11 standard) in private and public environments. This increase poses great challenges for Wireless Local Area Networks (WLANs) design and implementation. The major part of the traffic in these networks is generated by video streaming and audio applications. Dealing with heterogeneous traffic has become a major challenge for WiFi networks due to the emerging applications. Modeling the traffic generated by each device is essential for correctly evaluating the performance of WiFi networks. This paper presents an analytical performance model for WiFi networks that takes into account the effect of the different application types. We used the N-Burst/M/l queuing model to estimate the average packet delay and the buffer overflow probability for wireless networks. The ON/OFF traffic model is used to model the heterogeneous traffic of the network applications. We use the performance model presented in this paper to evaluate the effect of application type on the performance of WiFi networks.
智能手机和数字设备使用的爆炸式增长导致私人和公共环境中WiFi接入点(IEEE802.11标准)的部署增加。这种增长对无线局域网(wlan)的设计和实现提出了巨大的挑战。这些网络中的大部分流量是由视频流和音频应用程序产生的。由于各种应用的出现,处理异构流量已成为WiFi网络面临的主要挑战。对每个设备产生的流量进行建模对于正确评估WiFi网络的性能至关重要。本文提出了一个考虑不同应用类型影响的WiFi网络性能分析模型。我们使用N-Burst/M/l排队模型来估计无线网络的平均数据包延迟和缓冲区溢出概率。ON/OFF流量模型用于对网络应用的异构流量进行建模。我们使用本文提出的性能模型来评估应用类型对WiFi网络性能的影响。
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引用次数: 1
Remaining Energy Aware ML-CSMA/TDMA Hybrid MAC Protocol for LTE-M2M Wireless Network LTE-M2M无线网络剩余能量感知ML-CSMA/TDMA混合MAC协议
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646538
Ahmed A. Naguib, W. Saad, M. Shokair
One of the major issues that faces the planning of M2M (Machine-to-Machine) networks is the energy consumption, due to battery driven nodes. MTC (Machine Type Communication) is the communication of machine nodes over wireless network to enable IoT (Internet of Things) technology. The expected tremendous usage of this technology during the next few years, will give rise to a massive number of machine nodes served by one base station. The need for a multiple access technique that manages the simultaneous communication between this huge number of nodes and the base station with an energy efficient manner is an urgent issue. In this paper, we design a scalable hybrid energy efficient MAC protocol based on ML-CSMA (Multi-Layer Carrier Sense Multiple Access) concept, which provides an enhancement in the energy consumption with less degradation in the system throughput. The proposed protocol increases the lifetime of the battery-powered nodes.
M2M(机器对机器)网络规划面临的主要问题之一是电池驱动节点的能量消耗。MTC(机器类型通信)是通过无线网络实现机器节点的通信,以实现IoT(物联网)技术。预计在未来几年内,这项技术的大量使用将产生一个基站服务的大量机器节点。需要一种多址技术,以高效节能的方式管理如此庞大数量的节点与基站之间的同时通信,是一个迫切需要解决的问题。本文设计了一种基于ML-CSMA (Multi-Layer Carrier Sense Multiple Access)概念的可扩展混合节能MAC协议,该协议在降低系统吞吐量的同时提高了能耗。提出的协议增加了电池供电节点的寿命。
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引用次数: 5
An Enhanced Jaya Optimization Algorithm (EJOA) for Solving Multi-Objective ORPD Problem 求解多目标ORPD问题的改进Jaya优化算法(EJOA)
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646363
A. Barakat, R. El-Sehiemy, Mohamed I. Elsayd, E. Osman
this article presents an enhanced Jaya optimization algorithm (EJOA) for solving a multi objective function (MOF) of the optimal reactive power dispatch (ORPD) problem. This solution aims to determine the optimal scheduling of control variables to achieve the ORPD primary objectives as well as respecting equality and inequality constrains. This problem is concerned with minimizing the real power losses (PL) and voltage deviation (VD) in power systems. The ORPD problem can be formulated as a non-linear and complex framework. The MOF is dependent on a combination of weighted sum method and fuzzy logic to find the best compromise solution of the competitive objective functions (COFs). For proving the effectiveness of the proposed EJOA, two test systems, IEEE 30-bus system and the network of west delta as a real system (WDRN), are used to prove the capability of the proposed Jaya algorithm with weight sum method and fuzzy member ship for solving a multi-objective ORPD problem. The obtained results confirm that the proposed Jaya algorithm is an effective tool that can makes a noticeable enhancement on solving ORPD problem.
本文提出了一种改进的Jaya优化算法(EJOA),用于求解最优无功调度(ORPD)问题的多目标函数问题。该解决方案旨在确定控制变量的最优调度,以实现ORPD的主要目标,并尊重相等和不等式约束。该问题涉及到电力系统中实际功率损耗(PL)和电压偏差(VD)的最小化。ORPD问题可以表述为一个非线性的复杂框架。该算法采用加权和法和模糊逻辑相结合的方法来寻找竞争目标函数的最佳妥协解。为了证明所提出的EJOA算法的有效性,用IEEE 30总线系统和西部三角洲作为一个实际系统的网络(WDRN)两个测试系统验证了所提出的Jaya算法的权值和模糊隶属关系算法求解多目标ORPD问题的能力。实验结果表明,Jaya算法是解决ORPD问题的有效工具。
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引用次数: 9
Most Valuable Player Algorithm for Solving Direction Overcurrent Relays Coordination Problem 求解方向过流继电器协调问题的最有价值参与人算法
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646537
Ahmed Korashy, S. Kamel, Abdel‐Raheem Youssef, F. Jurado
This paper proposes the application of Most Valuable Player Algorithm (MVPA) to find the optimal solution for directional overcurrent relays (DOCRs) coordination problem. The coordination problem of DOCRs is considered as a non-linear optimization problem. The decision variables for this problem are relay settings. Minimize the summation of the operating times of all primary relays with maintaining the coordination margin between relays pairs is the main goal of this study. The feasibility and performance of the proposed algorithm for solving the coordination problem of DOCRs are assessed in two test system (8-bus and IEEE-30 bus). The results show the ability of the proposed algorithm for solving DOCRs coordination problem without any miscoordination. The results of the proposed optimization algorithm are compared with other previously optimization techniques.
本文提出应用最有价值玩家算法(MVPA)求解定向过流继电器(docr)协调问题的最优解。docr的协调问题被认为是一个非线性优化问题。这个问题的决策变量是继电器设置。在保持继电器对协调余量的前提下,使所有主继电器的操作时间总和最小是本研究的主要目标。在8总线和IEEE-30总线两个测试系统中,对所提算法解决docr协调问题的可行性和性能进行了评估。实验结果表明,该算法能够有效地解决docr协调问题,且不存在任何失配现象。将所提出的优化算法的结果与以往的其他优化技术进行了比较。
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引用次数: 15
Automatic Traffic Violation Recording and Reporting System to Limit Traffic Accidents : Based on Vehicular Ad-hoc Networks (VANET) 基于车辆自组织网络(VANET)的交通违章自动记录与报告系统
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646449
Samir A. Elsagheer Mohamed
The number of road accidents increases and causes many problems. Many people die and injured. In addition, that causes many economic, social and psychological problems that have negative impact to the development of the world. The main cause of the majority of these accidents is due to the violation of the traffic rules: driving with high speeds, crossing a red-light signal, not keeping sufficient distance with the front vehicle in the highways, driving in the wrong reverse direction, etc. As the number of roads and streets are very large and the total length of these roads is very long, there is no way to fully monitor all of them all the time by Traffic Patrol or camera systems.This paper proposes a system to automatically and autonomously detect and record the traffic violations without the help of the human being. We propose the development of a device (on-board unit) that will be placed inside the vehicle and be secured so that the vehicle’s driver cannot stop it. This on-board unit detects and records the major traffic violations committed by a vehicle in real time at any time in any place. In addition, we propose an automatic reporting system to send the committed traffic violations to the traffic authority systems.
道路交通事故的数量增加了,造成了许多问题。许多人死伤。此外,这还造成许多经济、社会和心理问题,对世界的发展产生消极影响。这些事故的主要原因是由于违反交通规则:超速驾驶,闯红灯信号,在高速公路上与前车保持足够的距离,反向行驶错误等。由于道路和街道的数量非常多,并且这些道路的总长度非常长,因此交通巡逻或摄像系统无法随时对所有道路进行全面监控。本文提出了一种无需人工辅助的自动、自主的交通违规检测与记录系统。我们建议开发一种装置(车载装置),它将被放置在车辆内部并被固定,这样车辆的驾驶员就无法阻止它。该车载装置可在任何时间、任何地点实时检测并记录车辆的重大交通违法行为。此外,我们提出了一个自动报告系统,将犯下的交通违法行为发送到交通管理系统。
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引用次数: 10
WiFi Antenna Design and Modeling using Artificial Neural Networks 基于人工神经网络的WiFi天线设计与建模
Pub Date : 2019-02-01 DOI: 10.1109/ITCE.2019.8646616
Passant k. Abbassi, N. Badra, A. Allam, A. El-Rafei
Artificial neural networks (ANN) have gained popularity in microwave modeling, design and simulations. This article is devoted to designing efficient antenna to achieve high gain and optimal impedance matching in addition to employing ANN to model the microstrip antenna. The proposed elliptical patch antenna operates at 2.4 GHz used for wireless applications. The ANN is fed with data set derived by CST EM simulator to train and test the NN model. The feed-forward back-propagation ANN is used along with Levenberg-Marquart (LM) learning algorithm to model the antenna. Extensive analyses has been carried out to provide an efficient ANN model by the aid of statistical measures as mean square error (MSE), mean error and standard deviation error. Moreover, the proposed antenna is fabricated and measured. A high agreement between simulated and measured antenna return loss is illustrated.
人工神经网络(ANN)在微波建模、设计和仿真中得到了广泛的应用。本文在采用人工神经网络对微带天线进行建模的基础上,探讨了如何设计高效的天线以实现高增益和最佳阻抗匹配。所提出的椭圆贴片天线工作在2.4 GHz,用于无线应用。利用CST仿真器生成的数据集对神经网络模型进行训练和测试。采用前馈反向传播人工神经网络结合Levenberg-Marquart (LM)学习算法对天线进行建模。通过对均方误差(MSE)、平均误差和标准差误差等统计指标的分析,给出了一个有效的人工神经网络模型。最后,对天线进行了制作和测量。仿真结果与实测结果吻合较好。
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引用次数: 8
期刊
2019 International Conference on Innovative Trends in Computer Engineering (ITCE)
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