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2022 International Conference on Computing, Communication, Perception and Quantum Technology (CCPQT)最新文献

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Visualization of Human Lying Angle Based on Deep Convolutional Neural Network 基于深度卷积神经网络的人体卧角可视化
Mingwei Zhong, Xingshang Wang, Fangyan Dong, Kewei Chen, Yongfei Feng
The traditional nursing process usually consists of five steps: nursing assessment, nursing diagnosis, nursing planning, nursing implementation and nursing evaluation. With an ageing population[1], the transfer of bedridden patients during care delivery has become a major issue in-
传统的护理过程通常包括五个步骤:护理评估、护理诊断、护理计划、护理实施和护理评估。随着人口老龄化[1],卧床病人在护理过程中的转移已成为中国的一个主要问题
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引用次数: 0
A Multiple RFID Readers Anti-collision Algorithm for RFID Tags Identification based on Graph Theory 基于图论的RFID标签识别多读写器防碰撞算法
Chen Zhao, Xiaolin Jia
In a large-scale multiple RFID readers system, the signal between the readers will interfere with each other during the tags identification, which is called reader collision. Such that, this paper proposes a Multiple RFID Readers Anti-collision Algorithm for RFID Tags Identification based on Graph Theory (MRGT) to deal with the interference. The algorithm establishes an interference graph for the RFID readers network used to select the independent set of the RFID readers and avoid the collision among multiple readers by arranging different communication slots and frequencies for different reader sets. Simulation results show that the proposed algorithm increases the number of active readers per second by 6.4% and 11.56% respectively on average, and the tag recognition rate is also increased by 6 and 11 times respectively compared with the classic algorithm Neighbor Friendly Reader Anti-Collision Protocol (NFRA) and distributed color selection (DCS) algorithm, and so the system efficiency and tag recognition rate of MRGT are better than that of NFRA and DCS.
在大规模的多个RFID读写器系统中,在标签识别过程中,读写器之间的信号会相互干扰,称为读写器碰撞。为此,本文提出了一种基于图论(MRGT)的RFID标签识别多读写器防碰撞算法来处理干扰。该算法建立了RFID读写器网络的干扰图,用于选择RFID读写器的独立集,并通过为不同的读写器集安排不同的通信时隙和频率来避免多个读写器之间的冲突。仿真结果表明,与经典算法邻居友好阅读器防碰撞协议(NFRA)和分布式颜色选择(DCS)算法相比,该算法每秒平均增加了6.4%和11.56%的活跃阅读器数,标签识别率也分别提高了6倍和11倍,因此MRGT的系统效率和标签识别率都优于NFRA和DCS。
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引用次数: 0
MEC-enabled Federated Learning for Network Slicing 支持mec的网络切片联邦学习
Ruijie Ou, Daniel Ayepah-Mensah, Guisong Liu
Network slicing divides wireless networks into multiple logical networks to support different applications with different performance requirements. In recent times, centralized slice controllers based on Deep Learning have been utilized to gain insight from base stations to facilitate the dynamic network slicing process. However, centralized controllers suffer from high data communication overhead due to a large amount of user data, and most network slices are unwilling to share private network dataAs a means of achieving scalable and privacy for network slices, we propose a multi-access edge-based federated learning approach for network slicing through which distributed base stations can dynamically allocate resources across multiple slices without having to share any personal or network data with a central orchestrator. The experimental results show that the proposed dynamic network slicing algorithm can dynamically allocate resources for multiple slices and satisfy the corresponding quality of service requirements.
网络切片将无线网络划分为多个逻辑网络,以支持具有不同性能要求的不同应用。近年来,基于深度学习的集中式切片控制器被用于从基站获取洞察力,以促进动态网络切片过程。但是,集中式控制器由于用户数据量大,数据通信开销高,而且大多数网络切片不愿意共享私有网络数据,作为实现网络切片可扩展性和保密性的手段,我们提出了一种用于网络切片的基于多访问边缘的联邦学习方法,通过该方法,分布式基站可以跨多个切片动态分配资源,而无需与中央编排器共享任何个人或网络数据。实验结果表明,所提出的动态网络切片算法能够为多个切片动态分配资源,满足相应的服务质量要求。
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引用次数: 0
Research on the Detection and Tracking of Moving Objects in Dynamic Scenes 动态场景中运动目标的检测与跟踪研究
Bowen Cheng, Shuai Jiang, Yalong Pang, Shenshen Luan, Jing Lu
Aiming at the poor robustness of the moving objects detection and tracking algorithm in the dynamic scenes, a new moving objects tracking algorithm in the dynamic scenes is proposed, which combines the optical flow method and Kalman predictor, can solve the occlusion problem in target tracking. The optical flow method solves the detection of the moving objects problem, and the Kalman predictor is used to complete the moving target prediction and association. The experimental results show that, the proposed algorithm can work well in the stationary scenes and the dynamic scenes, and the accuracy of detection of moving objects in dynamic scenes is more effective than the optical flow method only.
针对动态场景下运动目标检测与跟踪算法鲁棒性差的问题,提出了一种结合光流法和卡尔曼预测器的动态场景下运动目标跟踪算法,解决了目标跟踪中的遮挡问题。光流法解决了运动目标的检测问题,利用卡尔曼预测器完成运动目标的预测和关联。实验结果表明,该算法在静态场景和动态场景下都能很好地工作,并且在动态场景中对运动物体的检测精度比光流法更有效。
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引用次数: 0
Simulation and Research of Laser Frequency Stabilization Control System Based on Matlab 基于Matlab的激光稳频控制系统仿真与研究
Wan-ming Liu
In the total reflection prism laser gyro, the frequency stabilization accuracy of the ring laser directly affects the working accuracy of the gyro. Based on the control system theory, the transfer function of the prismatic laser gyro frequency stabilization control system is established. The equivalent mathematical model of the ring laser in the frequency stabilization control system is established by the method of experimental test. Through theoretical analysis and MATLAB simulation, the performance of the frequency stabilization control system of the laser gyro can be accurately evaluated, which provides a theoretical basis for the system design and improves the performance of the frequency stabilization control system. improved the gyro performance and debugging efficiency.
在全反射棱镜激光陀螺中,环形激光器的稳频精度直接影响陀螺的工作精度。基于控制系统理论,建立了棱镜激光陀螺稳频控制系统的传递函数。通过实验测试的方法,建立了稳频控制系统中环形激光器的等效数学模型。通过理论分析和MATLAB仿真,可以准确评价激光陀螺稳频控制系统的性能,为系统设计提供理论依据,提高稳频控制系统的性能。提高了陀螺的性能和调试效率。
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引用次数: 0
A Real-time Semantic Segmentation Method Based on Multi-level Feature Fusion 基于多层次特征融合的实时语义分割方法
Jinyan Xu, Tingxu Lyu
The performance improvement for real-time segmentation networks is generally to accelerate the segmentation speed of the model at the cost of computational cost, ignoring the problem of semantic inconsistency of neighborhood features, which causes the accuracy of segmented images to decrease. Therefore, it is crucial to take into account the segmentation efficiency while ensuring the accuracy of model segmentation. In this paper, a lightweight model based on Multi-level Feature Fusion Semantic Segmentation Network (MLFFNet) is proposed, and the network as a whole adopts a two-branch structure to differentiate different types of features. The model obtained 81.4 FPS forward inference speed and 71.3% segmentation accuracy on the Cityscapes dataset, which is capable of real-time semantic segmentation tasks and proposes a new idea for the semantic segmentation problem in a complex context.
实时分割网络的性能提升一般是以计算成本为代价来加快模型的分割速度,忽略了邻域特征语义不一致的问题,导致分割图像的精度下降。因此,在保证模型分割精度的同时兼顾分割效率是至关重要的。本文提出了一种基于多级特征融合语义分割网络(MLFFNet)的轻量级模型,该网络整体上采用两分支结构来区分不同类型的特征。该模型在cityscape数据集上获得了81.4 FPS的前向推理速度和71.3%的分割准确率,能够完成实时的语义分割任务,为复杂环境下的语义分割问题提供了一种新的思路。
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引用次数: 1
Reconfigurable Intelligent Surface Speeds up MIMO Secret Key Generation 可重构智能表面加速MIMO密钥生成
Jie Tang, H. Wen, Zeguang Li, Ruifei Wang
Recently, there is a growing interest in employing reconfigurable intelligent surface (RIS) to assist physical layer key generation in wireless networks. However, current works only studied the RIS-aided key generation schemes in SISO (single-input-single-output) communications, which have relatively low key generation rate (KGR). Therefore, here, in order to fill this gap, we propose the new and really novel RIS-aided MIMO (multiple-input-multiple-output) key generation scheme. By fully exploring the reflection signals from the RIS to the legitimate communication partners as the introduced, controllable and artificial randomness, combined with the spatial degree-of-freedom of RIS and MIMO incident and reflected signals, the KGR performance can be significantly improved. The information theoretical security is fully investigated, and the upper bound value of KGR is derived to comprehensively evaluate the system performance. The simulations fully validate the effectiveness and robustness of the proposed new and really novel, and interesting scheme.
最近,人们对利用可重构智能表面(RIS)来辅助无线网络中的物理层密钥生成越来越感兴趣。然而,目前的工作只研究了单输入单输出通信中ris辅助密钥生成方案,该方案的密钥生成率(KGR)相对较低。因此,在这里,为了填补这一空白,我们提出了新的和真正新颖的ris辅助MIMO(多输入多输出)密钥生成方案。通过充分挖掘从RIS到合法通信伙伴的反射信号作为引入的、可控的和人为的随机性,结合RIS和MIMO的入射和反射信号的空间自由度,可以显著提高KGR性能。充分研究了信息的理论安全性,推导了KGR的上界值,对系统性能进行了综合评价。仿真结果充分验证了该方法的有效性和鲁棒性。
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引用次数: 0
Physical Layer Security of IRS-Assisted Multi-Layer Heterogeneous Networks in Smart Grid 智能电网中irs辅助多层异构网络的物理层安全
Yuchen Guo, Geng Liu, J. Ren, Ying Liu, Liang Yao, Yu Cao, Jian Chen, Yuchen Zhou
With the deployment of large-scale intelligent terminals in 5G Smart Grid, more communication and computing resources will be sunk to the network edge to meet the ultra-reliable and low-latency requirements of communication networks. However, for the inevitable co-channel interference between adjacent cells, traditional solutions may lead to lower spectrum efficiency or poor signal quality of edge-users. In our work, intelligent reflecting surface (IRS) is used to solve the problem of co-channel interference caused by frequency reuse and improve the transmission capacity of the system. In addition, for the secure transmission issues of massive amount of information in Smart Grid, a low-cost and low-complexity physical layer security transmission scheme is proposed in our work to realize secure transmission. Our work aims at maximizing the system sum-rate by optimizing the transmit beamforming vector at the macro base station (MBS) and multiple micro base stations (mBSs), and the reflection beamforming vector at the IRS with the guarantee of secure communications. Subsequently, the optimization problem is transformed into a convex form, and a non-alternating optimization algorithm based on variable decoupling is designed to obtain high-quality suboptimal solutions. The simulation results show the effectiveness and advantages of the proposed scheme.
随着5G智能电网中大规模智能终端的部署,更多的通信和计算资源将下沉到网络边缘,以满足通信网络的超可靠和低延迟需求。然而,由于相邻小区之间不可避免的共信道干扰,传统的解决方案可能会导致边缘用户的频谱效率降低或信号质量差。在我们的工作中,使用智能反射面(IRS)来解决频率复用引起的同信道干扰问题,提高系统的传输容量。此外,针对智能电网中海量信息的安全传输问题,本文提出了一种低成本、低复杂度的物理层安全传输方案来实现安全传输。在保证通信安全的前提下,通过优化宏基站(MBS)和多微基站(MBS)的发射波束形成矢量以及IRS的反射波束形成矢量,实现系统和速率的最大化。然后,将优化问题转化为凸形式,设计基于变量解耦的非交替优化算法,获得高质量的次优解。仿真结果表明了该方案的有效性和优越性。
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引用次数: 1
Joint Relay Selection and Flight Path Optimization for UAV-Assisted Vehicular Delay Tolerant Networks 无人机辅助车载容延迟网络联合中继选择与航路优化
Yixin He, Huakui Sun, Xiaobo Yang, Dawei Wang, Ruonan Zhang, Qian Xu
This paper introduces the application of the unmanned aerial vehicles (UAV) into vehicular delay tolerant networks (VDTNs). In UAV-assisted VDTNs, vehicles adopt the storage-carry-forward mechanism to transmit data, and UAVs can be utilized as mobile relays. For the considered network, we investigate the data transmission problem by jointly considering the relay selection and flight path optimization. We formulate a multi-objective optimization problem, which composes of two parts: a) the transmission delay; b) the flight path cost. Due to the intractability of the formulated NP-hard problem, we design a heuristic algorithm to solve it. Specifically, according to the encounter probability, we present a relay selection scheme, which can limit the maximum number of hops and copies. Then, by considering the flight path cost, we present a flight path optimization scheme based on the improved particle swarm optimization algorithm. Finally, the numerical results show that compared with the current works, our proposed data transmission strategy significantly reduces the transmission delay and the flight path cost.
介绍了无人机在车载容延迟网络中的应用。在无人机辅助VDTNs中,车辆采用存储-前向机制传输数据,无人机可作为移动中继。对于所考虑的网络,我们综合考虑中继选择和飞行路径优化来研究数据传输问题。我们建立了一个多目标优化问题,该问题由两部分组成:a)传输延迟;B)航线成本。由于公式化np困难问题的难解性,我们设计了一种启发式算法来解决它。具体来说,根据遇到概率,提出了一种中继选择方案,可以限制最大跳数和副本数。然后,在考虑航线成本的基础上,提出了一种基于改进粒子群算法的航线优化方案。最后,数值计算结果表明,与目前的工作相比,我们提出的数据传输策略显著降低了传输延迟和飞行路径成本。
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引用次数: 0
An Inverse Estimation of the Spectral Properties of Ceramic with the Null-collision Reverse Monte Carlo 用零碰撞反蒙特卡罗法反演陶瓷的光谱性质
Zeyu Zhu, H. Qi, Baohai Gao, Kefu Li, Juqi Zhang, Zhitian Niu
Ceramic is widely used in solar collectors because of its high absorption to the solar radiation. As the performance of ceramic is mainly decided by its optical properties, this work proposes an inverse model with the combination of the null-collision reverse Monte Carlo method (NC-RMC) and the covariance matrix adaptation evolution strategy (CMA-ES) to obtain the spectral optical properties of ceramic. A multi-angle model is introduced to handle the ill-posedness of the inverse problem. Numerical experiments are operated to investigate the inverse algorithm whose results show that the proposed inverse model is can provide an accurate solution to retrieving the optical properties of ceramic.
陶瓷对太阳辐射的吸收率高,在太阳能集热器中得到了广泛的应用。由于陶瓷的性能主要由其光学性质决定,本文提出了一种结合零碰撞反蒙特卡罗方法(NC-RMC)和协方差矩阵自适应进化策略(CMA-ES)的反演模型来获得陶瓷的光谱光学性质。引入多角度模型来处理逆问题的病态性。通过数值实验对反演算法进行了研究,结果表明所提出的反演模型可以为反演陶瓷的光学性质提供准确的解。
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引用次数: 0
期刊
2022 International Conference on Computing, Communication, Perception and Quantum Technology (CCPQT)
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