检索结果-南通市图书馆

Preface to special topic on information and intelligent metasurfaces

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2023年第8期10卷 7-8页

作者： Tie Jun Cui marco di renzo Southeast University Université Paris-Saclay

In the past decades, information science and technology has developed rapidly, but has also encountered some *** further development requires some original driving force of underlying physics(such as quantum mechanics...

关键词：

A new evaluation system for early and successful conservative treatment for acute ischial tuberosity avulsion

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Traumatology 2013年第4期16卷 254-256页

作者： marco Ceretti Sara di renzo Department of Orthopaedics and Traumatology Sapienza University of Rome Rome 00185 Italy

In this report we analyse a case of ischi- atic tuberosity avulsion. A 15-year-old patient who came to our first aid department two days after a football match ac- cident was treated conservatively and examined at month 1- 4, 6 and 12. In order to examine patient condition, a new index was formulated： the inability score index （ISI）, which is based on hip range of motion and scales for rest, walking, running pain and compared to other parameters such as oedema area, fragment diastasis evaluated by X-ray and CT accordingly. ISI defines the inability as severe, moderate and mild. It guides the rehabilitative program in the right way. In this case, the patient was able to run softly after 35 days and to go back to the full agonist activity after 4 months. At the end of treatment the patient referred to the complete pain remission, full range of motion recovery and a good fracture consolidation. After 1 year we discuss about thera- peutic strategies used and results obtained.

关键词： Fractures, bone Sports medicine Reha- bilitation

维普期刊数据库

Sparsity Modulation for 6G Communications

在线全文

学校读者我要写书评

暂无评论

中国通信:英文版 2023年第10期20卷 I0002-I0005页

作者： Jun Li Shuping Dang Jia Hou marco di renzo Mohamed-Slim Alouini the School of Electronics and Communication Engineering at Guangzhou University GuangzhouChina School of Electrical Electronic and Mechanical EngineeringUniversity of Bristol Soochow University SuzhouChina the Intelligent Physical Communications group in the Laboratory of Signals and Systems(L2S)at Paris-Saclay University-CNRS and Centrale Supelec ParisFrance IEEE

Sparsity modulation is a promising technology for the sixth generation(6G)of communication networks,which satisfies the high requirements in terms of spectral efficiency(SE)and energy efficiency(EE).Currently,many representative sparsity modulation schemes,such as spatial modulation,index modulation,media-based modulation,reconfigurable intelligent surface(RIS)-based/reflecting modulation,and subcarrier number modulation,have attracted the attention of the wireless research *** from conventional amplitude-phase modulation schemes,sparsity modulation employs one or more modulation dimension(s)in addition to the conventional amplitude-phase constellation,so as to form higher-dimensional modulation schemes,which considerably enhance the SE at a reduced implementation complexity under proper system *** is worth noting that the modulation dimensions in current sparsity modulation schemes are not fully explored due to limited resources.

关键词： dimensions networks dimension

Reconfiguring wireless environments via intelligent surfaces for 6G: reflection, modulation, and security

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2023年第3期66卷 60-79页

作者： Jindan XU Chau YUEN Chongwen HUANG Naveed UL HASSAN George C.ALEXANDROPOULOS marco di renzo Mérouane DEBBAH Engineering Product Development Pillar Singapore University of Technology and Design College of Information Science and Electronic Engineering Zhejiang University Department of Electrical Engineering Lahore University of Management Sciences Department of Informatics and Telecommunications National and Kapodistrian University of Athens Technology Innovation Institute Université Paris-Saclay CNRS Centrale Supélec Laboratoire des Signaux et Systèmes

The reconfigurable intelligent surface(RIS) has been recognized as an essential enabling technology for sixth-generation(6G) mobile communication networks. An RIS comprises a large number of small and low-cost reflecting elements whose parameters can be dynamically adjusted with a programmable *** of these elements can effectively reflect a phase-shifted version of the incident electromagnetic wave. By configuring the wave phases in real time, the propagation environment of the information-bearing signals can be dynamically manipulated to enhance communication reliability, boost transmission rate, expand cellular coverage, and strengthen communication security. In this study, we provide an overview on RIS-assisted wireless communications. Specifically, we elaborate on the state-of-the-art enabling techniques for the RIS technology as well as their corresponding substantial benefits from the perspectives of RIS reflection and RIS modulation. With these benefits, we envision the integration of RISs into emerging applications for6G. In addition, communication security is of unprecedented importance in future 6G networks with ubiquitous wireless services in multifarious verticals and areas. We highlight potential contributions of RISs to physical-layer security, in terms of secrecy rate and secrecy outage probability, exemplified by a typical case study from both theoretical and numerical aspects. Finally, we discuss challenges and opportunities on the deployment of RISs in practice to motivate future research.

关键词： reconfigurable intelligent surface physical-layer security RIS-assisted wireless communications phase modulation 6G

Reconfigurable intelligent surfaces for smart wireless environments: channel estimation, system design and applications in 6G networks

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2021年第10期64卷 52-72页

作者： Ying-Chang LIANG Jie CHEN Ruizhe LONG Zhen-Qing HE Xianqi LIN Chenlu HUANG Shilin LIU Xuemin (Sherman) SHEN marco di renzo Center for Intelligent Networking and Communications University of Electronic Science and Technology of China School of Electronic Science and Engineering University of Electronic Science and Technology of China Department of Electrical and Computer Engineering University of Waterloo Université Paris-Saclay CNRS CentraleSupélec Laboratoire des Signaux et Systèmes

Reconfigurable intelligent surface(RIS), one of the key enablers for the sixth-generation(6G)mobile communication networks, is considered by designers to smartly reconfigure the wireless propagation environment in a controllable and programmable manner. Specifically, an RIS consists of a large number of low-cost and passive reflective elements(REs) without radio frequency chains. The system gain of RIS wireless systems can be achieved by adjusting the phase shifts and amplitudes of the REs so that the desired signals can be added constructively at the receiver. However, an RIS typically has limited signal processing capability and cannot perform active transmitting/receiving in general, which leads to new challenges in the physical layer design of RIS wireless systems. In this paper, we provide an overview of the RIS-aided wireless systems, including the reflection principle, channel estimation, and system design. In particular,two types of emerging RIS systems are considered: RIS-aided wireless communications(RAWC) and RISbased information transmission(RBIT), where the RIS plays the role of the reflector and the transmitter,respectively. We also envision the potential applications of RIS in 6G networks.

关键词： reconfigurable intelligent surface channel estimation RIS-aided wireless communications RIS-based information transmission 6G

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Editorial

Intelligent and Converged Networks 2022年第1期3卷 I0001-I0003页

作者： Linglong Dai Chan-Byoung Chae Shi Jin marco di renzo Rui Zhang Beijing National Research Center for Information Science and Technology(BNRist)and the Department of Electronic Engineering Tsinghua UniversityBeijing 100084China School of Integrated Technology Yonsei Institute of Convergence TechnologyYonsei UniversityIncheon 406-840Republic of Korea. National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China. the UniversitéParis-Saclay CNRSCentraleSupélecLaboratoire des Signaux et Systèmes3 Rue Joliot-Curie91192 Gif-sur-YvetteFrance. Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore

Reconfigurable Intelligent Surface(RIS),also known as intelligent reflecting surface or large intelligent surface,is an emerging new physical-layer technology in the field of wireless *** basic idea of RIS is to deploy a reconfigurable passive array in the environment to manipulate the propagation of electron-magnetic *** promises a new design paradigm for wireless communications,where the wireless propagation environment can be dynamically controlled,which is substantially different from the conventional design that focuses only on the transmitter and *** RIS-aided wireless communications,some of the current methodologies in conventional communication systems need to be revised,and some novel solutions are required to realize the potential benefits of the *** the number of publications about RIS has recently sharply increased,there are still many challenging issues to be extensively investigated,such as the RIS channel modeling,fundamental performance limits,the system design,joint optimization of the RIS and the transceivers,channel state information acquisition,and interdisciplinary applications.

关键词： passive sharply revised

WIRELESS COMMUNICATIONS WITH RECONFIGURABLE INTELLIGENT SURFACES

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Communications 2021年第3期18卷 I0002-I0004页

作者： Caijun Zhong Shi Jin marco di renzo Jun Fang Zhejiang University HangzhouChina the National Mobile Communications Research Laboratory Southeast University the Laboratory of Signals and Systems(L2S) CNRSCentrale SupelecParis-Saclay University the University of Electronic of Science and Technology of China

With the commercialization of the fifth generattion(5G)of wireless networks in 2019,the development of the next generation of wireless standards is currently under *** cope with the target 1000x improvement of system capacity,5G wireless standards have adopted massive MIMO as a key enabling physical layer technology to boost the spectral efficiency.

关键词： wireless massive boost

维普期刊数据库

Sparsity Modulation for 6G Communications

在线全文

学校读者我要写书评

暂无评论

China Communications 2023年第10期 6-9页

作者： Jun Li Shuping Dang Jia Hou marco di renzo Mohamed-Slim Alouini

关键词：

Editorial:Special Topic on Reconfigurable Intelligent Surface(RIS)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

ZTE Communications 2022年第1期20卷 1-2页

作者： YUAN Yifei JIN Shi marco di renzo China Mobile Research Institute the National Mobile Communications Research Laboratory Southeast University the French National Center for Scientific Research(CNRS) the Laboratory of Signals and Systems(L2S)of Paris-Sac lay University-CNRS Paris-Saclay University IEEE the UK Institution of Engineering and Technology(IET) the Asia-Pacific Artificial Intelligence Association(AAIA) the European Academy of Sciences and Arts(EASA) the Academy of Europe(AE)

Over the past two years,reconfigurable intelligent surface(RIS),as a promising emerging technology for Beyond 5 G(B5 G) and 6 G mobile communications systems,has attracted enormous interest from both academia and indu... 详细信息

关键词： Alcatel IoT Engine

维普期刊数据库