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2022 5th International Conference on Communications, Signal Processing, and their Applications (ICCSPA)最新文献

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Intrusion Detection Systems Based on Stacking Ensemble Learning in VANET 基于VANET中堆叠集成学习的入侵检测系统
Mahshid Behravan, N. Zhang, A. Jaekel, Marc Kneppers
Vehicular ad-hoc network (VANET) will play an important role in improving driving safety and efficiency in transport systems. As various attacks arise in VANET, it is essential to design mechanisms that can detect these attacks and then mitigate them. In this paper, we make an effort to detect five different position falsification attacks in VANET, including constant attack, constant offset attack, random attack, random offset attack, and eventual stop attack. Two detection systems based on ensemble machine learning algorithms, including stacking ensemble learning algorithms for classification and stacking ensemble learning for neural network, are proposed. We extracted the most important features by performing feature importance techniques. Then, we train the proposed learning algorithms on VeReMi dataset which includes five different position falsification attacks with three traffic densities and three attacker densities. Extensive experimental results are provided to evaluate the proposed solutions' effectiveness. Based on our results, stacking ensemble learning for classification algorithm can achieve the best performance in terms of accuracy and recall. In low density traffic, accuracy and recall of stacking ensemble learning for classification algorithms are 1 for the constant attack, constant offset attack, and random attack. Accuracy and recall for the random offset attack are 0.999 and 0.996, respectively. For the eventual stop attack, accuracy and recall are 0.995 and 0.985, respectively. In medium density, accuracy and recall of stacking ensemble learning also achieve the best performance.
车辆自组织网络(VANET)将在提高交通系统的驾驶安全性和效率方面发挥重要作用。由于VANET中出现了各种攻击,因此必须设计能够检测这些攻击并随后减轻攻击的机制。在本文中,我们尝试检测五种不同的VANET位置伪造攻击,包括恒定攻击、恒定偏移攻击、随机攻击、随机偏移攻击和最终停止攻击。提出了两种基于集成机器学习算法的检测系统,包括用于分类的堆叠集成学习算法和用于神经网络的堆叠集成学习算法。我们通过执行特征重要性技术来提取最重要的特征。然后,我们在VeReMi数据集上训练了所提出的学习算法,该数据集包含五种不同的位置伪造攻击,具有三种流量密度和三种攻击者密度。提供了大量的实验结果来评估所提出的解决方案的有效性。基于我们的研究结果,分类算法的堆叠集成学习在准确率和召回率方面可以达到最好的性能。在低密度流量下,分类算法的叠加集成学习在恒定攻击、恒定偏移攻击和随机攻击下的准确率和召回率均为1。随机偏移攻击的准确率和召回率分别为0.999和0.996。对于最终的停止攻击,正确率和召回率分别为0.995和0.985。在中等密度下,叠加集成学习的正确率和召回率也达到最佳。
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引用次数: 0
A Multibeam Antenna for Multi-Orbit LEO Satellites and Terminals with a Very Simple Tracking Technique 基于简单跟踪技术的多轨道LEO卫星和终端多波束天线
M. Sanad, N. Hassan
A foldable/deployable multi-beam antenna has been developed for Low-Earth Orbit (LEO) satellites and ground stations. It consists of dual parabolic cylindrical reflectors with multiple resonant feeds. It can generate an arbitrary number of beams with arbitrary vertical and horizontal beam-tilt for each beam. It can be remotely controlled to cover any arbitrary area having any shape/size. It has a very wide frequency band-width. It can even, simultaneously, work at multi wide frequency bands such as 5G-sub-6GHz band (3.3-6.0 GHz), Ku-band (10–16 GHz) and Ka-band (18–31 GHz). A very simple beam tracking technique has been developed without using any adaptive methods. For any specific satellite orbit, the orientation of the ground station (terminal) antenna will always be adjusted such that its generated beams are parallel to the satellite's beams and directed toward them. This automatic orientation of the ground station (terminal) antenna, completely, depends on its location, orientation and elevation with no need for any adaptive beam steering/tracking or any adaptive beam-shaping. Furthermore, the terminal antenna can simultaneously communicate with multiple satellites in different orbits. For example, a penta beam terminal antenna can, simultaneously, communicate with five satellites in five different orbits.
为低地球轨道(LEO)卫星和地面站开发了一种可折叠/可展开的多波束天线。它由具有多个谐振馈源的双抛物面圆柱形反射器组成。它可以产生任意数量的光束,每个光束具有任意的垂直和水平光束倾斜。它可以远程控制覆盖任何形状/大小的任意区域。它有一个非常宽的频带宽度。它甚至可以同时在5G-sub-6GHz频段(3.3-6.0 GHz)、ku频段(10-16 GHz)和ka频段(18-31 GHz)等多个宽频段工作。在不使用任何自适应方法的情况下,开发了一种非常简单的光束跟踪技术。对于任何特定的卫星轨道,地面站(终端)天线的方向将始终被调整,使其产生的波束与卫星的波束平行并指向它们。这种地面站(终端)天线的自动定向完全取决于其位置、方向和仰角,不需要任何自适应波束转向/跟踪或任何自适应波束整形。此外,终端天线可以同时与不同轨道上的多颗卫星通信。例如,一个五波束终端天线可以同时与五个不同轨道上的五颗卫星通信。
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引用次数: 0
A Robotic System for Automatic Identification and Collection of Recyclable Plastic Bottles 一种自动识别和收集可回收塑料瓶的机器人系统
Uzma Ahmed Din, S. Mukhopadhyay, Usman Tariq
Plastics have become a cornerstone of modern life, but they are also hazardous for the environment. Manually collecting and sorting such recyclable plastic from a mix of other refuse is tedious work, and has accompanying health hazards. This work develops a prototype autonomous robot that can navigate via a combination of GPS and image based techniques to reach known locations where recyclable trash is expected, then identify and collect plastic bottles from among other waste. For a first prototype, the focus is on recognition and picking up of a particular type of plastic bottle commonly used for packaging drinking water.
塑料已成为现代生活的基石,但它们也对环境有害。人工从其他垃圾中收集和分类这些可回收塑料是一项繁琐的工作,并伴有健康危害。这项工作开发了一个原型自主机器人,它可以通过GPS和基于图像的技术组合导航到已知的可回收垃圾的位置,然后从其他垃圾中识别和收集塑料瓶。对于第一个原型,重点是识别和拾取一种通常用于包装饮用水的特定类型的塑料瓶。
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引用次数: 0
Smart Monitoring of Outdoor Insulators 室外绝缘子智能监控
Abdulla Lutfi, Ayman H. El-Hag
Outdoor insulators are crucial components to the integrity of overhead lines. There are two main types of outdoor insulators: ceramic and non-ceramic insulators. Both types suffer from different types of defects in the field and hence they need to be inspected regularly to avoid any possible sudden failure of these insulators. In this paper, the different types of defects of outdoor insulators are summarized. Moreover, the different pros and cons of sensors are highlighted and compared. Furthermore, the application of machine learning to enhance the inspection process is introduced.
室外绝缘子是架空线路完整性的关键部件。室外绝缘子主要有两种类型:陶瓷绝缘子和非陶瓷绝缘子。这两种类型的绝缘子在现场都有不同类型的缺陷,因此需要定期检查,以避免任何可能的突然失效。本文对不同类型的室外绝缘子缺陷进行了综述。并对不同传感器的优缺点进行了比较。此外,还介绍了机器学习在提高检测过程中的应用。
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引用次数: 0
On the Design of a High Data Rate Underwater Acoustic Receiver 一种高数据速率水声接收机的设计
Amal Samir, B. ElDiwany, Ahmad Elmoslimany, M. Nafie, Sherif ElAzzouni, T. Elbatt
In this paper, we propose a novel design for a high-speed underwater acoustic (UWA) receiver chain. Towards this objective, we introduce a novel closed-loop, adaptive, single-rate Doppler scale estimation and compensation algorithm and a novel dual-domain channel estimation and equalization technique. We validate our results and evaluate the proposed schemes using extensive simulations based on channel models generated from the analysis of the Kauai Acomms MURI 2011 (KAM11) UWA communications experiment's recording. The extensive simulations show that the proposed algorithms exhibit superior performance compared to the state-of-the-art.
本文提出了一种高速水声(UWA)接收链的新设计。为此,我们提出了一种新的闭环、自适应、单速率多普勒尺度估计和补偿算法,以及一种新的双域信道估计和均衡技术。我们验证了我们的结果,并使用基于Kauai Acomms MURI 2011 (KAM11) UWA通信实验记录分析生成的信道模型的广泛模拟来评估所提出的方案。大量的仿真表明,所提出的算法与最先进的算法相比具有优越的性能。
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引用次数: 0
Enhanced Deep Learning for Massive MIMO Detection Using Approximate Matrix Inversion 基于近似矩阵反演的大规模MIMO检测增强深度学习
Ali J. Almasadeh, Khawla A. Alnajjar, M. Albreem
Massive multiple-input multiple-output (MIMO) is a crucial technology in fifth-generation (5G) and beyond 5G (B5G). However, the huge number of antennas used in massive MIMO systems causes a high computational complexity during signal detection. In this paper, we propose an efficient massive MIMO detection technique which is based on approximate matrix inversion methods and deep learning to enhance the system performance while keeping computational complexity low. Three approximate methods which are Gauss–Seidel (GS), successive over-relaxation (SOR), and conjugate gradient (CG) are exploited for the initialization of a modified version of the MM network (MMNet) algorithm. The performance of the proposed technique is validated under both Gaussian and realistic channel scenarios, i.e., Quadriga channels models. Simulation results show that the proposed technique outperforms MMNet, minimum mean square estimation (MMSE), detection network (DetNet), and orthogonal approximate message passing deep net (OAMP-Net) in terms of symbol error rate (SER) during offline training. It also provides a significant SER improvement of up to 87% when compared to MMNet in the online training scenario.
大规模多输入多输出(MIMO)是第五代(5G)及以后(B5G)的关键技术。然而,在大规模MIMO系统中使用的大量天线导致信号检测过程中的计算复杂度很高。在本文中,我们提出了一种基于近似矩阵反演方法和深度学习的高效大规模MIMO检测技术,以提高系统性能,同时保持较低的计算复杂度。利用高斯-塞德尔(GS)、连续过松弛(SOR)和共轭梯度(CG)三种近似方法初始化了改进版的MM网络(MMNet)算法。在高斯信道和实际信道(即Quadriga信道模型)下验证了所提出技术的性能。仿真结果表明,该方法在离线训练时的符号误差率(SER)方面优于MMNet、最小均方估计(MMSE)、检测网络(DetNet)和正交近似消息传递深度网络(OAMP-Net)。与在线培训场景中的MMNet相比,它还提供了高达87%的显著SER改进。
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引用次数: 1
Secrecy Analysis Over Correlated Generalized Gamma Fading Channels 相关广义衰落信道的保密性分析
Youssef M. Eldokmak, M. H. Ismail, Mohamed S. Hassan
In this paper, we analyze the secrecy performance assuming correlated generalized gamma fading for the legitimate and eavesdropper channels. Specifically, we derive expressions for the probability of non-zero secrecy capacity, a lower bound on the secrecy outage probability and the average secrecy capacity in case of high signal-to-noise ratio (SNR). Monte Carlo simulations were then run verifying the accuracy of our analysis.
本文分析了合法信道和窃听信道在相关广义伽玛衰落条件下的保密性能。具体地说,我们导出了非零保密容量的概率表达式、高信噪比下保密中断概率的下界表达式和平均保密容量表达式。然后运行蒙特卡罗模拟来验证我们分析的准确性。
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引用次数: 0
Capacity of the Beaulieu-Xie Fading Channel under Adaptive Transmission Strategies 自适应传输策略下的波谢衰落信道容量
Mohamed Mostafa, M. H. Ismail
In this paper, we study the capacity of the recently proposed Beaulieu-Xie fading channel under different trans-mission strategies. This fading distribution is used to model wireless channels characterized by multiple line-of-sight (LOS) components with some indirect rays due to multiple scatterers. Novel expressions for the channel capacity under optimum power and rate adaptation (OPRA), optimum rate adaption (ORA), channel inversion with fixed rate (CIFR) and truncated channel inversion with fixed rate (TIFR) are derived in semi-closed form. The derived expressions are verified through special cases that are already well-documented in the literature and through Monte-Carlo simulations where perfect agreement is observed thus confirming the validity of the derived expressions.
本文研究了新提出的Beaulieu-Xie衰落信道在不同传输策略下的容量。这种衰落分布用于模拟具有多个视距(LOS)分量的无线信道,其中含有由于多个散射体而产生的一些间接射线。以半封闭形式导出了最优功率和速率自适应(OPRA)、最优速率自适应(ORA)、固定速率信道反转(CIFR)和截断固定速率信道反转(TIFR)条件下的信道容量表达式。通过文献中已经充分记录的特殊情况和通过蒙特卡罗模拟,观察到完全一致,从而证实了导出表达式的有效性,验证了导出表达式。
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引用次数: 0
A Unified Performance Analysis of OGS-to-Satellite FSO UpLink under Turbulence and Beam Wander 湍流和波束漂移条件下星-星FSO上行链路统一性能分析
Esmail Elsaidy, Tamer Rakia
Free space optical (FSO) uplink from a service provider to a Low Earth Orbit (LEO) satellite has emerged as a promising solution to transfer large amount of data to the satellite to be relayed to huge number of users over wide geographical areas. In this paper, we present a new unified model for the FSO uplink from an optical ground station (OGS) to a LEO satellite, while considering subcarrirer intensity mod-ulation/direct detection (SIM/DD) and coherent FSO detection techniques. We take into account the various channel fading effects of atmospheric turbulence, beam wander and OGS - Satellite misalignment errors. We then make use of this model to present new expressions for the outage probability and the ergodic capacity of the FSO uplink and the average symbol error rate over the FSO uplink for different digital modulation schemes in exact closed-forms. Numerical examples show that coherent FSO systems give better performance over the FSO uplink than SIM/DD FSO systems which improves more with small zenith angles and less misalignment errors.
从服务提供商到低地球轨道(LEO)卫星的自由空间光学(FSO)上行链路已经成为一种有前途的解决方案,可以将大量数据传输到卫星,然后中继给广泛地理区域的大量用户。本文在考虑子载波强度调制/直接检测(SIM/DD)和相干FSO检测技术的基础上,提出了一种从光地面站(OGS)到低轨道卫星的FSO上行的统一模型。我们考虑了大气湍流、波束漂移和OGS -卫星不对准误差对信道衰落的影响。然后,我们利用该模型以精确的封闭形式给出了不同数字调制方案下FSO上行链路的中断概率和遍历容量以及FSO上行链路上的平均符号误码率的新表达式。数值算例表明,相干FSO系统在FSO上行链路上的性能优于SIM/DD FSO系统,在天顶角小、对准误差小的情况下,性能得到了更大的提高。
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引用次数: 1
Performance Evaluation and Comparative Analysis for Widely Used Sound Source Localization Algorithms 常用声源定位算法的性能评价与比较分析
Yasir Kadhim, A. Khalifeh
Sound source localization (SSL) is technique that is used to process where the source and determine its direction using several SSL algorithms. Having an accurate, fast and computational efficient SSL algorithm, is extremely useful especially when designing hearing aid devices, that can guide the deaf person to the sound source direction, which is very important especially when encountering dangerous sound sources such as car horn. In this paper, a performance comparison of several SSL algorithms are conducted, bearing in mind the algorithms' accuracy, execution time and suitability for hearing aid devices. The conducted tests show that both the The MUltiple Signal Classification (MUSIC) and the steered response power (SRP) algorithms performed the nearly best in terms of accuracy especially under low signal-to-noise (SNR) conditions, the capability of identifying multiple audio sources, and the low processing delay, which make them best candidates to be deployed on hearing aid devices when compared with other SSL algorithms.
声源定位(SSL)是一种使用几种SSL算法处理声源位置并确定其方向的技术。一个准确、快速、计算效率高的SSL算法,在设计助听器的时候是非常有用的,它可以引导聋人到声源的方向,特别是在遇到汽车喇叭等危险声源的时候,这是非常重要的。本文对几种SSL算法进行了性能比较,考虑了算法的准确性、执行时间和对助听器的适用性。所进行的测试表明,多信号分类(MUSIC)和转向响应功率(SRP)算法在精度方面表现最好,特别是在低信噪比(SNR)条件下,识别多个音频源的能力和低处理延迟,与其他SSL算法相比,它们是部署在助听器设备上的最佳选择。
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引用次数: 0
期刊
2022 5th International Conference on Communications, Signal Processing, and their Applications (ICCSPA)
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