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The opportunistic relaying scheme design and symbol error rate analysis for PLC networks in smart homes

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Science China(Information Sciences) 2021年第8期64卷 250-252页

作者： Linlin SUN Jiahui YAN Yuwen QIAN Feng SHU xiangwei zhou The School of Electronic and Optical Engineering Nanjing University of Science and Technology The Division of Electrical and Computer Engineering Louisiana State University

Dear editor,Power line communication(PLC) is treated as a retrofit technology, transmitting messages via conductors without extra infrastructure, which reduces the cost of implementation and maintenance [1]. Therefore, PLC is extensively adopted in smart grid applications. However, PLC encounters a hostile communication environment caused by the fast signal attenuation and severe impulsive noise [2].

关键词： SER The opportunistic relaying scheme design and symbol error rate analysis for PLC networks in smart homes

Intelligent Wireless Communications Enabled by Cognitive Radio and Machine Learning

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China Communications 2018年第12期15卷 16-48页

作者： xiangwei zhou Mingxuan Sun Geoffrey Ye Li Biing-Hwang (Fred) Juang School of EECS Louisiana State University School of ECE Georgia Institute of Technology

The ability to intelligently utilize resources to meet the need of growing diversity in services and user behavior marks the future of wireless communication systems. Intelligent wireless communications aims at enabling the system to perceive and assess the available resources, to autonomously learn to adapt to the perceived wireless environment, and to reconfigure its operating mode to maximize the utility of the available resources. The perception capability and reconfigurability are the essential features of cognitive radio while modern machine learning techniques project great potential in system adaptation. In this paper, we discuss the development of the cognitive radio technology and machine learning techniques and emphasize their roles in improving spectrum and energy utility of wireless communication systems. We describe the state-of-the-art of relevant techniques, covering spectrum sensing and access approaches and powerful machine learning algorithms that enable spectrum and energy-efficient communications in dynamic wireless environments. We also present practical applications of these techniques and identify further research challenges in cognitive radio and machine learning as applied to the existing and future wireless communication systems.

关键词： cognitive radio energy efficiency machine learning reconfiguration spectrum efficiency

An intelligent impulsive noise mitigation with deep learning method

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International Journal of Mechanical System Dynamics 2024年第3期4卷 346-360页

作者： Guo Yang Yuwen Qian Zikun Wang xiangwei zhou Wen Wu The School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjingChina The Division of Electrical and Computer Engineering Louisiana State UniversityBaton RougeLouisianaUSA

To enable message transmission among sensors and equipment,power line communication(PLC)is a widely adopted smart ***,due to the occurrence of impulsive noise(IN),reliable transmissions over PLC channels in the smart grid are ***,in this paper,we propose an adaptive noise mitigation scheme to clip the IN with the sliding window-based method,where the altitude of the received signal in the current time slots is obtained by computing the average altitude of signals in the previous and next time *** detect the states of IN and dynamically estimate the power threshold of signals for the IN mitigation scheme,we develop an intelligent algorithm based on the long short-term memory *** prevent the useful signals from being eliminated as IN signals,we propose the accelerated proximal gradient method(APGM)based on tone reservation to reduce the peak-to-average power ratio(PAPR)for the transmitting signals with low computational *** addition,the closed-form expression of the bit error rate(BER)is derived for the proposed sliding window-based IN mitigation scheme according to the probability density function of the *** results demonstrate that the proposed IN mitigation scheme achieves a better BER performance than the conventional IN mitigation *** addition,the APGM aided by IN mitigation can further improve BER performance due to the PAPR reduction.

关键词： impulsive noise deep learning smart grid

Preface: Security and safety in physical layer systems

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Security and Safety 2024年第1期3卷 4-6页

作者： Aiqun Hu Liang Jin Xiangyun zhou Feng Shu xiangwei zhou State Key Laboratory of Mobile Communications Southeast UniversityNanjing 210096China National Digital Switching System Engineering&Technological R&D Center Zhengzhou 450002China School of Engineering Australian National UniversityCanberra 2601Australia School of Information and Communication Engineering Hainan UniversityHaikou Hainan 570100China Division of Electrical and Computer Engineering Louisiana State UniversityBaton Rouge 70803USA

This special topic mainly focuses on the progress of physical-layer security(PLS)technologies and their potential applications for the future beyond fifth-generation(B5G)and sixth-generation(6G)*** tremendous growth in connectivity and the ubiquity of wireless communications have resulted in an unprecedented awareness of the importance of security and *** secure and trusted communications is vital for future intelligent connected applications,especially life-critical vehicle-toeverything(V2X)***,the heterogeneous,dynamic and decentralized architecture of these networks leads to difficulties for cryptographic key management,and *** exploiting the physical characteristics of devices,wireless channels and noise,PLS offers reliable solutions against eavesdropper attacks as complementary approaches to cryptographic techniques.

关键词： layer complementary networks

感知与突围:教育场域中农村家庭的阶层代际流动——基于CGSS数据的实证分析

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教育发展研究 2020年第6期40卷 1-8页

作者：周向伟张天雪浙江师范大学教育改革与发展研究院金华321004

人民的幸福感、获得感、安全感是新时代的民生重点,仅关注以经济资本为代表的客观阶层,忽视个体主观的阶层感知,将无助于从根本上促进社会阶层的有序流动。本文基于有正规学校教育经历的农村家庭子代,着眼教育与家庭背景因素,通过对其... 详细信息

人民的幸福感、获得感、安全感是新时代的民生重点,仅关注以经济资本为代表的客观阶层,忽视个体主观的阶层感知,将无助于从根本上促进社会阶层的有序流动。本文基于有正规学校教育经历的农村家庭子代,着眼教育与家庭背景因素,通过对其与阶层流动感知关系的研究发现:子代的主观阶层水平依然较低,仅有小幅度的代际正向流动,突围藩篱依然存在。教育、家庭背景对农村子代的主观阶层流动具有直接与间接双重解释效应。不同于客观阶层流动,在对子代阶层流动感知的影响中,子代及其母亲的教育程度具有显著的负向效应,家庭经济水平有显著的正向效应,父母的职级和父亲的教育经历不具有显著效应。子代及其母亲的教育经历、家庭经济水平、客观阶层水平均通过子代的阶层期望对其阶层流动感知产生显著影响。基于此,在提升人力资本的同时,应注重在政府及家校合作的基础上,对农村子代阶层认知进行积极引导,助其更有效地实现主观阶层突围。

关键词：教育社会阶层代际流动农村家庭

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区域高等教育布局调整:空间生产理论的视角

江苏高教 2022年第5期 31-38页

作者：周向伟张天雪浙江师范大学教师教育学院浙江金华321004

自然空间观主导下的布局在高等教育普及化阶段已效率不再,社会空间观则为其带来新的审思视域与思路。空间生产理论视域的高等教育布局应契合空间的社会性,实现从自然空间到社会空间布局的观念转向;应契合空间的自生产性,实现布局对象从... 详细信息

自然空间观主导下的布局在高等教育普及化阶段已效率不再,社会空间观则为其带来新的审思视域与思路。空间生产理论视域的高等教育布局应契合空间的社会性,实现从自然空间到社会空间布局的观念转向;应契合空间的自生产性,实现布局对象从机械到能动的功能转向;应契合空间的差异性,实现从激烈竞争到求同存异的生态转向。而当前则表现出高等教育布局中社会空间观的转向及其动力不足、高等教育空间生产的能动性表现不佳、高等教育各布局要素同质化发展等问题。未来需要持续培育高教布局的空间生产价值,主张布局的空间观念转向;不断将高等教育的内外部“关系”嵌入布局考量,激发高等教育的自我更新活力;动态培育本土适需的高教资源,全程跟踪高等教育的分类布局实践。

关键词：高等教育布局空间生产布局结构

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我国建设更加完备终身教育体系的战略取向与发展脉络——《教育规划纲要》十年回眸与展望之五

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中国教育学刊 2021年第1期 23-27页

作者：王宪平周向伟浙江师范大学发展规划处浙江金华321004 浙江师范大学浙江金华321004

构建"体系完备的终身教育"是《国家中长期教育改革和发展规划纲要(2010—2020年)》的重要战略目标。通过十年的努力,我国终身教育发展成就斐然,基本形成了更加完备的终身教育体系,机会不断丰富拓展,各级各类教育协调发展,满足了"人人、... 详细信息

构建"体系完备的终身教育"是《国家中长期教育改革和发展规划纲要(2010—2020年)》的重要战略目标。通过十年的努力,我国终身教育发展成就斐然,基本形成了更加完备的终身教育体系,机会不断丰富拓展,各级各类教育协调发展,满足了"人人、时时、处处"学习的全生命周期教育需求,从"能学"稳步向"好学"和"学有所成"迈进;制度不断创新完善,建立学分转换、资历框架标准等制度,推进终身教育立法,基本建成纵横贯通的终身学习"立交桥";方式不断开放多元,突出信息技术赋能,走出一条以学校教育和社区教育相协调、线上和线下教育相联动的中国特色终身教育体系建设之路,为构建服务全民终身学习的现代教育体系奠定了坚实基础。

关键词：终身教育体系终身学习学习型社会教育规划纲要