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| 1 | Towards 6G wireless communication networks:vision,enabling technologies,and new paradigm shifts显示文摘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 faster and further communications to the extent that the boundary between physical and cyber worlds disappears. | 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 GLARSSON Hien Quoc NGO Wei HONG Haiming WANG Debin HOU Jixin CHEN Zhe CHEN Zhangcheng HAO Geoffrey Ye LI Rahim TAFAZOLLI Yue GAO HVincent POOR Gerhard P.FETTWEIS Ying-Chang LIANG | 2021 | Science China(Information Sciences)2021，64，1： | 122 |
| 2 | Recent advances and future challenges for massive MIMO channel measurements and models显示文摘The emerging fifth generation(5G) wireless communication system raises new requirements on spectral efficiency and energy efficiency. A massive multiple-input multiple-output(MIMO) system, equipped with tens or even hundreds of antennas, is capable of providing significant improvements to spectral efficiency,energy efficiency, and robustness of the system. For the design, performance evaluation, and optimization of massive MIMO wireless communication systems, realistic channel models are indispensable. This article provides an overview of the latest developments in massive MIMO channel measurements and models. Also, we compare channel characteristics of four latest massive MIMO channel models, such as receiver spatial correlation functions and channel capacities. In addition, future challenges and research directions for massive MIMO channel measurements and modeling are identified. | Cheng-Xiang WANG Shangbin WU Lu BAI Xiaohu YOU Jing WANG Chih-Lin I | 2016 | Science China(Information Sciences)2016，59，2： | 16 |
| 3 | Monitoring Greenhouses Gases over China Using Space-Based Observations Monitoring Greenhouses Gases over China Using Space-Based Observations显示文摘The atmospheric carbon dioxide(CO 2)concentration has increased to more than 405 parts per million(ppm.1 ppm=10-6 m/s 2)in 2017 due to human activities such as deforestation,land-use change and burning of fossil fuels.Although there is broad scientific consensus on the damaging consequences of the change in climate associated with increasing concentrations of greenhouse gases,fossil CO 2 emissions have continued to increase in recent years mainly from rapidly developing economies and China is now the largest emitter of CO 2 generating about 30%of all emissions globally.To allow more reliable forecast of the future state of the carbon cycle and to support the efforts for mitigation greenhouse gas emissions,a better understanding of the global and regional carbon budget is needed.Space-based measurements of CO 2 can provide the necessary observations with dense coverage and sampling to provide improved constrains on of carbon fluxes and emissions.The Chinese Global Carbon Dioxide Monitoring Scientific Experimental Satellite(TanSat)was established by the National High Technology Research and Development Program of China with the main objective of monitoring atmospheric CO 2 and CO 2 fluxes at the regional and global scale.TanSat has been successfully launched in December 2016 and as part of the Dragon programme of ESA and the Ministry of Science and Technology(MOST),a team of researchers from Europe(UK and Finland)and China has evaluated early TanSat data and contrast it against data from the GOSAT mission and models.In this manuscript,we report on retrieval intercomparisons of TanSat data using two different retrieval algorithms,on validation efforts for the Eastern Asia region using GOSAT CO 2 data and first assessments of TanSat and GOSAT CO 2 data against model calculations using the GEOS-Chem model. | Hartmut BOESCH Yi LIU Paul I PALMER Johanna TAMMINEN Jasdeep S ANAND Zhaonan CAI Ke CHE Huilin CHEN Xi CHEN Liang FENG Janne HAKKARAINEN Pauli HEIKKINEN Nikoleta KALAITZI Rigel KIVI Robert PARKER Peter SOMKUTI Jing WANG Alex WEBB Dongxu YANG Lu YAO You YI | 2020 | Journal of Geodesy and Geoinformation Science2020，3，4： | 2 |
| 4 | Suppression of Notch signalling by the COUP-TFII transcription factor regulates vein identity 显示文摘 | You LR Lin FJ I ee CT | 2005 | Nature2005，435，7038： | 1 |
| 5 | Clinical,Pathologic, and Characteristics of GastrointestinalStromal Tumors of the Colon and Rectum:Implications for Surgical Management and Adjuvant Therapies 显示文摘 | Hassan I You YN Dozois EJ | 2006 | Dis Colon Rectum2006，49，5： | 1 |
| 6 | Proposed failure mechanism in a discontinuously reinforced aluminum alloy 显示文摘 | You C P Thompson A W Bernstein I M | 1987 | Scripta Metall1987，21，： | 1 |
| 7 | Detection of the high-level aminoglycoside resistance gene aph (2')-Ib in Enterococcus faecium显示文摘 | Kao SJ You I Clewell DB | 2000 | Antimicrob Agents Chemother2000，44，： | 1 |
| 8 | Total knee arthroplasty withoutpatellar resuifacing显示文摘 | Oh I S Kim M K You D S | 2006 | Int Orthop2006，30，5： | 1 |
| 9 | Characteristics of bursal T Lymphocytes induced by Infectious bursal disease virus显示文摘 | Kim I J You S K Kim H | | 0，，： | 1 |
| 10 | Directconverison of cellulose into polyols or H2 over P t/N a (H )-Z S M -5 显示文摘 | YOU S J BEAK I G KIM Y T JEONG K E CHAE H J KIM T W KIM C U KIM T J CHUNG Y M OH S H PARK E D | | Korean J Chem Eng0，28，3： | 1 |
| 11 | The effect of calcium additions on the oxidation behavior in magnesium alloys显示文摘 | You B S Park W W Chung I S | | 0，，11： | 1 |
| 12 | Integrated multi-eche- lon supply chain design with inventories under uncer- tainty: MINLP models, computational strategies 显示文摘 | YOU F GROSSMANN I E | 2010 | AIChE Journal2010，56，2： | 1 |
| 13 | Does radical cystectomy improveoverall survival in octogenarians with muscle-invasive bladder cancer?显示文摘 | Yoo S You D Jeong I G | 2011 | Korean J Urol2011，52，7： | 1 |
| 14 | Detection of the High-Level Aminoglycoside Resistance Gen aph(2″)-Ib in Enterococcus faecium显示文摘 | Kao SJ You I Clewell DB | 2000 | Antimicrob Agents Chemother2000，44，10： | 1 |
| 15 | Surgically managed gastrointestinal stromal tumors: a comparative and prognostic analysis显示文摘 | Hassan I You YN Shyyan R | 2008 | Ann Surg Oncol2008，15，1： | 1 |
| 16 | The Effect of Calcium Addition to Magnesium on the Microstructure and Compositional Changes of Oxide Film Formed at High Temperature 显示文摘 | You B S Pak W W Chung I S | 2001 | Materials Transactions JIM2001，42，6： | 1 |
| 17 | An efficient dead- lock prevention approach for service oriented transaction processing显示文摘 | TANG Feilong YOU I YU Shui | 2012 | Computers & Mathematics with Applica- tions2012，63，2： | 1 |
| 18 | Context-aware woriflow management for intelligent navigation applications in pervasive environments显示文摘 | Tang F You I Guo M | 2010 | Intelligent Automation and Soft Computing2010，16，4： | 1 |
| 19 | Scene change detection using multiple histograms for motion-compensated frame rate up-con- version 显示文摘 | Kang S J Cho S I You S | 2012 | IEEE Journal of Display Technology2012，8，3： | 1 |
| 20 | Neural circular RNAs are derived from synaptic genes and regulated by development and plasticity 显示文摘 | You X Vlatkovic I Babic A | 2015 | Nat Neurosci2015，18，4： | 1 |
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