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2005'全国微波毫米波会议

作者： zhu jian,p.l.rui,r.s.chen,y.h.ding department of communication engineering,nanjing university of science and technology, nanjing 210094,china

＜正＞Certain instabilities are usually encountered with edge-based finite element（FEM） implementations of the vector wave *** a result,properties of the finite element coefficient matrix are significantly deteriorated and poor convergence is found when solving with iterative *** address this issue,an A-V formulation employing edge-based finite elements for the vector potential A and node shape functions for the scalar potential V is utilized,and a diagonally perturbed incomplete Cholesky preconditioning scheme is applied to the conjugate gradient method（CG） for solving this large sparse A-V finite element system of *** compared with several other preconditioning techniques,the efficiency of the suggested approach.

关键词： Conjugate gradient method Incomplete Cholesky preconditioning technique Finite element methods A-V formulation

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recent progress in symplectic Algorithms for Use in Quantum systems

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communications in Computational physics 2007年第1期2卷 1-53页

作者： Xue-shen liu yue-ying Qi jian-Feng he pei-zhu ding Institute of Atomic and Molecular physics Jilin UniversityChangchun 130012P.R.China. school of Electrical engineering Jiaxing UniversityJiaxing 314001P.R.China. department of physics School of ScienceBeijing Institute of TechnologyBeijing 100081P.R.China.

In this paper we survey recent progress in symplectic algorithms for use in quantum systems in the following topics:symplectic schemes for solving hamiltonian systems;Classical trajectories of diatomic systems,model molecule A2B,hydrogen ion h+2 and elementary atmospheric reaction N(4s)+O2(X 3Σ−g)→NO(X 2Π)+O(3p)calculated by means of runge-Kutta methods and symplectic methods;the classical dissociation of the hF molecule and classical dynamics of h+2 in an intense laser field;the symplectic form and symplectic-scheme shooting method for the time-independent schr¨odinger equation;the computation of continuum eigenfunction of the schr¨odinger equation;asymptotic boundary conditions for solving the time-dependent schr¨odinger equation of an atom in an intense laser field;symplectic discretization based on asymptotic boundary condition and the numerical eigenfunction expansion;and applications in computing multi-photon ionization,above-threshold ionization,rabbi oscillation and high-order harmonic generation of laser-atom interaction.

关键词： Quantum system symplectic algorithm classical trajectory schr¨odinger equation intense laser field.

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CEpC Technical Design report

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radiation Detection technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An rui An Daniele paolo Anderle stefan Antusch yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry sha Bai yu Bai yang Bai Vipul Bairathi Csaba Balazs philip Bambade yong Ban Tripamo Bandyopadhyay shou-shan Bao Desmond p.Barber Ayse Bat Varvara Batozskaya subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov serge Bondarenko stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia hua Cai Wenyong Cai Wujun Cai yijian Cai yizhou Cai yuchen Cai haiying Cai huacheng Cai lorenzo Calibbi Junsong Cang Guofu Cao jianshe Cao Antoine Chance Xuejun Chang yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti yimin Che yuzhi Che Bin chen Danping chen Fuqing chen Fusan chen Gang chen Guoming chen hua-Xing chen huirun chen Jinhui chen Ji-yuan chen Kai chen Mali chen Mingjun chen Mingshui chen Ning chen shanhong chen shanzhen chen shao-long chen shaomin chen shiqiang chen Tianlu chen Wei chen Xiang chen Xiaoyu chen Xin chen Xun chen Xurong chen ye chen ying chen yukai chen Zelin chen Zilin chen Gang chen Boping chen Chunhui chen hok Chuen cheng huajie cheng shan cheng Tongguang cheng yunlong Chi pietro Chimenti Wen han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi ling-yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De la Taille Francesca De Mori Chiara De sio Elisa Del Core shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco ran ding siqin dingl yadong ding haiyi Dong jianin AGh university of science and technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied physics department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing Beijing Computational science research Center Beijing Beijing Conveyi lTD Beijing Beijing Glass research Institute Co. LtdBeijing Beijing Institute of technology Beijing Beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central china Normal university WuhanHubei Central south university ChangshaHunan Centro de Fisica Teorica de particulas Universidade Tecnica de LisboaLisboa chengdu Kaitengsifang Digital radio&TV Equipment Co. LtdChengduSichuan china academy of engineering physics MianyangSichuan china building materials academy Beijing china Center of Advanced science and technology Beijing china Institute of Atomic Energy Beijing china Jiliang university HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china university of Geosciences Beijing china university of Geosciences WuhanHubei china university of Mining and technology XuzhouJiangsu china West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CppM(AMU/IphU&CNrs/INp) Marseille Dalian Minzu university DalianLiaoning Dalian university of technology Department of PhysicsDalian Deutsches Elektronen-synchrotron DEsy Hamburg Dzhelepov laboratory of Nuclear problems of Joint Institute for Nuclear research(DlNp JINr) Dubna East china university Of science And Technol

The Circular Electron positron Collider(CEpC)is a large scientific project initiated and hosted by china,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV linac,a 1.1 GeV Damping ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,h,and tt).The linac and Damping ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential super proton proton Collider(sppC).The CEpC primarily serves as a higgs *** its baseline design with synchrotron radiation(sr)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(Ip),resulting in an integrated luminosity of 13 ab^(-1)for two Ips over a decade,producing 2.6 million higgs *** the sr power to 50 MW per beam expands the CEpC's capability to generate 4.3 million higgs bosons,facilitating precise measurements of higgs coupling at sub-percent levels,exceeding the precision expected from the hl-lhC by an order of *** Technical Design report(TDr)follows the preliminary Conceptual Design report(pre-CDr,2015)and the Conceptual Design report(CDr,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,r&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

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Towards 6G wireless communication networks:vision, enabling technologies, and new paradigm shifts

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science china(Information sciences) 2021年第1期64卷 5-78页

作者： Xiaohu yOU cheng-Xiang WANG Jie hUANG Xiqi GAO Zaichen ZhANG Mao WANG yongming hUANG Chuan ZhANG yanxiang jianG Jiaheng WANG Min zhu Bin shENG Dongming WANG Zhiwen pAN pengcheng zhu yang yANG Zening lIU ping ZhANG Xiaofeng TAO shaoqian lI Zhi chen Xinying MA Chih-lin I shuangfeng hAN Ke lI chengkang pAN Zhimin ZhENG lajos hANZO Xuemin (sherman) shEN yingjie Jay GUO Zhiguo ding harald hAAs Wen TONG peiying zhu Ganghua yANG Jun WANG Erik G.lArssON hien Quoc NGO Wei hONG haiming WANG Debin hOU Jixin chen Zhe chen Zhangcheng hAO Geoffrey ye lI rahim TAFAZOllI yue GAO h.Vincent pOOr Gerhard p.FETTWEIs ying-Chang lIANG National Mobile communications research laboratory School of Information Science and EngineeringSoutheast University purple Mountain laboratories shanghai Institute of Fog Computing technology (shIFT) ShanghaiTech University research Center for Network communication Peng Cheng Laboratory state Key laboratory of Networking and switching technology Beijing University of Posts and Telecommunications National engineering laboratory for Mobile Network Technologies Beijing University of Posts and Telecommunications National Key laboratory of science and technology on communications University of Electronic Science and Technology of China (UESTC) china Mobile research Institute school of Electronics and Computer science University of Southampton department of Electrical and Computer engineering University of Waterloo Global Big Data Technologies Centre (GBDTC) University of Technology Sydney school of Electrical and Electronic engineering The University of Manchester liFi research and Development Centre Institute for Digital CommunicationsSchool of EngineeringThe University of Edinburgh huawei Technologies Canada Co. Ltd. huawei Technologies department of Electrical engineering (Isy) Link?ping University Institute of Electronics Communications & Information Technology (ECIT)Queen's University Belfast state Key laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast University school of Electrical and Computer engineering Georgia Institute of Technology 5G Innovation Centre University of Surrey princeton university Vodafone Chair Mobile communications systems Technische Universit?t Dresden Center for Intelligent Networking and communications (CINC) University of Electronic Science and Technology of China (UESTC)

The fifth generation(5G) wireless communication networks are being deployed worldwide from 2020 and more capabilities are in the process of being standardized, such as mass connectivity, ultra-reliability,and guaranteed low latency. however, 5G will not meet all requirements of the future in 2030 and beyond, and sixth generation(6G) wireless communication networks are expected to provide global coverage, enhanced spectral/energy/cost efficiency, better intelligence level and security, etc. To meet these requirements, 6G networks will rely on new enabling technologies, i.e., air interface and transmission technologies and novel network architecture, such as waveform design, multiple access, channel coding schemes, multi-antenna technologies, network slicing, cell-free architecture, and cloud/fog/edge computing. Our vision on 6G is that it will have four new paradigm shifts. First, to satisfy the requirement of global coverage, 6G will not be limited to terrestrial communication networks, which will need to be complemented with non-terrestrial networks such as satellite and unmanned aerial vehicle(UAV) communication networks, thus achieving a space-airground-sea integrated communication network. second, all spectra will be fully explored to further increase data rates and connection density, including the sub-6Ghz, millimeter wave(mmWave), terahertz(Thz),and optical frequency bands. Third, facing the big datasets generated by the use of extremely heterogeneous networks, diverse communication scenarios, large numbers of antennas, wide bandwidths, and new service requirements, 6G networks will enable a new range of smart applications with the aid of artificial intelligence(AI) and big data technologies. Fourth, network security will have to be strengthened when developing 6G networks. This article provides a comprehensive survey of recent advances and future trends in these four aspects. Clearly, 6G with additional technical requirements beyond those of 5G will enable f

关键词： 6G vision network architecture air interface and transmission technologies space-air-ground-sea integrated network all spectra artificial intelligence network security.

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Forward link outage performance of aeronautical broadband satellite communications

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Frontiers of Information technology & Electronic engineering 2021年第6期22卷 790-801页

作者： huaicong KONG Min lIN shiwen hE Xiaoyu lIU jian OUyANG Weiping zhu College of Telecommunications and Information engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China school of Computer science and engineering Central South UniversityChangsha 410083China purple Mountain laboratories Nanjing 210096China department of Electrical and Computer engineering Concordia UniversityMontrealQC H3G 1M8Canada

high-throughput satellites(hTss) play an important role in future millimeter-wave(mm Wave) aeronautical communication to meet high speed and broad bandwidth requirements. This paper investigates the outage performance of an aeronautical broadband satellite communication system’s forward link, where the feeder link from the gateway to the hTs uses free-space optical(FsO) transmission and the user link from the hTs to aircraft operates at the mm Wave band. In the user link, spot beam technology is exploited at the hTs and a massive antenna array is deployed at the aircraft. We first present a location-based beamforming(BF) scheme to maximize the expected output signal-to-noise ratio(sNr) of the forward link with the amplify-and-forward(AF) protocol,which turns out to be a phased array. Then, by supposing that the FsO feeder link follows Gamma-Gamma fading whereas the mm Wave user link experiences shadowed rician fading, we take the influence of the phase error into account, and derive the closed-form expression of the outage probability(Op) for the considered system. To gain further insight, a simple asymptotic Op expression at a high sNr is provided to show the diversity order and coding gain. Finally, numerical simulations are conducted to confirm the validity of the theoretical analysis and reveal the effects of phase errors on the system outage performance.

关键词： Aeronautical broadband satellite network Free-space optical(FsO)transmission high throughput mmWave communication Outage probability phase error

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