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FUNDAMENTAL: 作品数：576被引量：992H指数：12; 导出分析报告; 相关领域：理学更多>>; 相关作者：任全伟冯巧玲冯兴平李明政李艺更多>>; 相关机构：国家自然科学基金委员会中山大学首都师范大学中国科学院更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家高技术研究发展计划更多>>

Fundamental Limitation of Semantic Communications:Neural Estimation for Rate-Distortion: 《Journal of Communications and Information Networks》2023年第4期303-318,共16页Dongxu Li Jianhao Huang Chuan Huang Xiaoqi Qin Han Zhang Ping Zhang; supported in part by the Natural Science Foundation of China under Grants 62022070,62341112,62293480,and 62293481,in part by Shenzhen high-tech zone project under Grant KC2022KCCX0041,in part by the key project of Shenzhen under Grant JCYJ20220818103006013,in part by the Shenzhen Outstanding Talents Training Fund 202002,in part by the Guangdong Provincial Key Laboratory of Future Networks of Intelligence under Grant 2022B1212010001,and in part by the Shenzhen Key Laboratory of Big Data and Artificial Intelligence under Grant ZDSYS201707251409055.; This paper studies the fundamental limit of semantic communications over the discrete memoryless channel.We consider the scenario to send a semantic source consisting of an observation state and its corresponding sema...; 关键词：Semantic communications semantic ratedistortion generative network Blahut-Arimoto algorithm

Reconfigurable Intelligent Surfaces for 6G:Nine Fundamental Issues and One Critical Problem被引量：7: 《Tsinghua Science and Technology》2023年第5期929-939,共11页Zijian Zhang Linglong Dai; supported by the National Key Research and Development Program of China(No.2020YFB1805005);the National Natural Science Foundation of China(No.62031019);the European Commission through the H2020-MSCA-ITN META WIRELESS Research Project(No.956256)。; Thanks to the recent advances in metamaterials,Reconfigurable Intelligent Surface(RIS)has emergedas a promising technology for future 6G wireless communications.Benefiting from its high array gain,low cost,and low pow...; 关键词：Reconfigurable Intelligent Surface(RIS) sixth generation mobile system(6G) wireless communications

A Review of Lightweight Cryptographic Schemes and Fundamental Cryptographic Characteristics of Boolean Functions: 《Advances in Internet of Things》2022年第1期9-17,共9页Nahla Fatahelrahman Ibrahim Johnson Ihyeh Agbinya; In this paper, we survey a number of studies in the literature on improving lightweight systems in the Internet of Things (IoT). The paper illustrates recent development of Boolean cryptographic function Application a...; 关键词：Internet of Things Lightweight Cryptographic Scheme Vectorial Boolean Functions IoT Differential Cryptanalysis

Proactive Spectrum Monitoring for Suspicious Wireless Powered Communications in Dynamic Spectrum Sharing Networks被引量：1: 《China Communications》2021年第12期119-138,共20页Yu Zhang Guojie Hu Yueming Cai; the Natural Science Foun-dations of China(No.62171464,61771487);the Defense Science Foundation of China(No.2019-JCJQ-JJ-221).; This paper studies the proactive spec-trum monitoring with one half-duplex spectrum moni-tor(SM)to cope with the potential suspicious wireless powered communications(SWPC)in dynamic spec-trum sharing networks.The jamm...; 关键词：proactive spectrum monitoring sum er-godic monitoring rate jamming-assisted proactive spectrum monitoring HALF-DUPLEX fundamental trade-off dynamic spectrum sharing network

Data recovery with sub-Nyquist sampling:fundamental limit and a detection algorithm: 《Frontiers of Information Technology & Electronic Engineering》2021年第2期232-243,共12页Xiqian LUO Zhaoyang ZHANG; Project supported by the National Natural Science Foundation of China(Nos.61725104 and 61631003);Huawei Technologies Co.,Ltd.(Nos.HF2017010003,YB2015040053,and YB2013120029)。; While the Nyquist rate serves as a lower bound to sample a general bandlimited signal with no information loss,the sub-Nyquist rate may also be sufficient for sampling and recovering signals under certain circumstance...; 关键词：Nyquist-Shannon sampling theorem Sub-Nyquist sampling Minimum Euclidean distance Under-determined linear problem Time-variant Viterbi algorithm

5G Features from Operation Perspective and Fundamental Performance Validation by Field Trial被引量：2: 《China Communications》2018年第11期33-50,共18页Guangyi Liu Yuhong Huang Fei Wang Jianjun Liu Qixing Wang; supported in part by national Key Project (2016ZX03001021); The fast deployment and penetration of 4G has cultivated human behaviors on mobile data consumption, leading to explosive growth in mobile traffic and stimulating new requirements on the capabilities of mobile network...; 关键词：5G IMT-2020 3D-MIMO usercentric network software defined network Network Function Virtualization field trial

Soliton regulation in microcavities induced by fundamental–second-harmonic mode coupling被引量：3: 《Photonics Research》2018年第10期948-953,共6页XIAOXIAO XUE XIAOPING ZHENG BINGKUN ZHOU; National Natural Science Foundation of China(NSFC)(61420106003,61690191,61690192);Natural Science Foundation of Beijing Municipality(4172029); Microcomb generation with simultaneous χ2 and χ3 nonlinearities brings new possibilities for ultrabroadband and potentially self-referenced integrated comb sources. However, the evolution of the intracavity field in...; 关键词：混沌孤子通讯技术理论研究发展现状

Estimating mean trabecular bone spacing based on the combination of Hilbert transform and fundamental frequency estimation: 《Science Foundation in China》2017年第3期57-71,共15页李颖徐峰刘成成许凯亮他得安王威琪; supported by the NSFC(11327405,11504057&11525416); Ultrasonic backscatter signals from cancellous bone are sensitive to the microstructure of trabecular bone,and thus enable the feasibility to extract microstructural information of trabecular bone.The mean trabecular ...; 关键词：Ultrasonic backscatter Mean trabecular bone spacing estimation Hilbert transform and fundamental frequency estimation Cancellous bone microstructure

FUNDAMENTAL COMMUNICATIONS THEORIES AND SIGNAL PROCESSING TECHNIQUES FOR AMORPHOUS CELLULAR SYSTEMS: 《China Communications》2016年第12期I0002-I0003,共2页Shi Jin Feifei Gao Kai Luo Yongming Huang Wei Peng; The rapid developing of the fourth generation(4G)wireless communications has aroused tremendous demands for high speed data transmission due to the dissemination of various types of the intelligent user terminals as w...; 关键词：IEEE FBMC FUNDAMENTAL COMMUNICATIONS THEORIES AND SIGNAL PROCESSING TECHNIQUES FOR AMORPHOUS CELLULAR SYSTEMS MIMO FIR

Amplification and Compression of Ultrashort Fundamental Solitons in An Erbium-Doped Nonlinear Amplifying Fiber Loop Mirror被引量：14: 《光学学报》2003年第S1期393-394,共2页P. K. A. Wai; The authors acknowledge the support of the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. PolyU5096/98E).; A nonlinear amplifying loop mirror constructed from erbium-doped fiber is proposed for simultaneous amplification and compression of ultrashort fundamental solitons. Numerical simulations show that, the proposed devic...; 关键词：of length that for Amplification and Compression of Ultrashort Fundamental Solitons in An Erbium-Doped Nonlinear Amplifying Fiber Loop Mirror in

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