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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 | Towards 10 Gb/s orthogonal frequency division multiplexing-based visible light communication using a GaN violet micro-LED显示文摘Visible light communication(VLC)is a promising solution to the increasing demands for wireless connectivity.Gallium nitride micro-sized light emitting diodes(micro-LEDs)are strong candidates for VLC due to their high bandwidths.Segmented violet micro-LEDs are reported in this work with electrical-to-optical bandwidths up to 655 MHz.An orthogonal frequency division multiplexing-based VLC system with adaptive bit and energy loading is demonstrated,and a data transmission rate of 11.95 Gb/s is achieved with a violet micro-LED,when the nonlinear distortion of the micro-LED is the dominant noise source of the VLC system.A record 7.91 Gb/s data transmission rate is reported below the forward error correction threshold using a single pixel of the segmented array when all the noise sources of the VLC system are present. | MOHAMED SUFYAN ISLIM RICARDO X.FERREIRA XIANGYU HE ENYUAN XIE STEFAN VIDEV SHAUN VIOLA SCOTT WATSON NIKOLAOS BAMIEDAKIS RICHARD V.PENTY IAN H.WHITE ANTHONY E.KELLY ERDAN GU HARALD HAAS MARTIN D.DAWSON | 2017 | Photonics Research2017，5，2： | 23 |
| 3 | 1 Gbps free-space deep-ultraviolet communications based on Ⅲ-nitride micro-LEDs emitting at 262 nm显示文摘The low modulation bandwidth of deep-ultraviolet(UV) light sources is considered as the main reason limiting the data transmission rate of deep-UV communications. Here, we present high-bandwidth Ⅲ-nitride microlight-emitting diodes(μLEDs) emitting in the UV-C region and their applications in deep-UV communication systems. The fabricated UV-C μLEDs with 566 μm2 emission area produce an optical power of 196 μW at the 3400 A∕cm2 current density. The measured 3 dB modulation bandwidth of these μLEDs initially increases linearly with the driving current density and then saturates as 438 MHz at a current density of 71 A∕cm2, which is limited by the cutoff frequency of the commercial avalanche photodiode used for the measurement. A deep-UV communication system is further demonstrated. By using the UV-C μLED, up to 800 Mbps and 1.1 Gbps data transmission rates at bit error ratio of 3.8 × 10-3 are achieved assuming on-off keying and orthogonal frequency-division multiplexing modulation schemes, respectively. | Xiangyu He Enyuan Xie Mohamed Sufyan Islim Ardimas Andi Purwita Jonathan J.D.McKendry Erdan Gu Harald Haas Martin D.Dawson | 2019 | Photonics Research2019，7，7： | 9 |
| 4 | Inflammatory Bowel Disease Is a Risk Factor for Recurrent Venous Thromboembolism显示文摘 | Gottfried Novacek Ansgar Weltermann Anna Sobala Herbert Tilg Wolfgang Petritsch Walter Reinisch Andreas Mayer Thomas Haas Arthur Kaser Thomas Feichtenschlager Harry Fuchssteiner Peter Knoflach Harald Vogelsang Wolfgang Miehsler Reingard Platzer Wolfgang T | 2010 | Gastroenterology2010，，3： | 4 |
| 5 | Modulation Techniques for Li-Fi显示文摘Modulation techniques for light fidelity(Li-Fi) are reviewed in this paper.Li-Fi is the fully networked solution for multiple users that combines communication and illumination simultaneously.Light emitting diodes(LEDs) are used in Li-Fi as visible light transmitters,therefore,only intensity modulated direct detected modulation techniques can be achieved.Single carrier modulation techniques are straightforward to be used in Li-Fi,however,computationally complex equalization processes are required in frequency selective Li-Fi channels.On the other hand,multicarrier modulation techniques offer a viable solution for Li-Fi in terms of power,spectral and computational efficiency.In particular,orthogonal frequency division multiplexing(OFDM) based modulation techniques offer a practical solution for Li-Fi,especially when direct current(DC) wander,and adaptive bit and power loading techniques are considered.Li-Fi modulation techniques need to also satisfy illumination requirements.Flickering avoidance and dimming control are considered in the variant modulation techniques presented.This paper surveys the suitable modulation techniques for Li-Fi including those which explore time,frequency and colour domains. | Mohamed Sufyan Islim Harald Haas | 2016 | ZTE Communications2016，14，2： | 3 |
| 6 | Clinical presentation of venous thromboembolism in inflammatory bowel disease显示文摘 | Pavol Papay Wolfgang Miehsler Herbert Tilg Wolfgang Petritsch Walter Reinisch Andreas Mayer Thomas Haas Arthur Kaser Thomas Feichtenschlager Harry Fuchssteiner Peter Knoflach Harald Vogelsang Reingard Platzer Wolfgang Tillinger Bernhard Jaritz Alfons Schm | 2012 | Journal of Crohn’s and Colitis2012，，： | 2 |
| 7 | 10 Gbps wavelength division multiplexing using UV-A, UV-B, and UV-C micro-LEDs显示文摘Deep ultraviolet(DUV) optical wireless communications have seen increased interest in recent years due to the unique properties of light in this spectral region. However, the reported DUV data rates remain significantly lower than comparable demonstrations at visible wavelengths due to lower modulation bandwidths and/or output power of the sources. Here, we present a wavelength division multiplexing demonstration using three UV microlight-emitting diodes emitting at nominal peak wavelengths of 285, 317, and 375 nm, respectively, each with an emitting area of approximately 1369 μm^(2)(equivalent to circular device pixels of diameter;0 μm). Using orthogonal frequency division multiplexing, data rates of 4.17, 3.02, and 3.13 Gbps were achieved from the 285, 317, and 375 nm devices, respectively, for a combined data rate of 10.32 Gbps transmitted over a distance of 0.5 m. | Daniel M.Maclure Jonathan J.D.McKendry Mohamed Sufyan Islim Enyuan Xie Cheng Chen Xiaobin Sun Xudong Liang Xiaohui Huang Hanaa Abumarshoud Johannes Herrnsdorf Erdan Gu Harald Haas Martin D.Dawson | 2022 | Photonics Research2022，10，2： | 1 |
| 8 | Assessment of Myocardial Viability With Contrast-Enhanced Magnetic Resonance Imaging: Comparison With Positron Emission Tomography显示文摘 | Christoph Klein Stephan G. Nekolla Frank M. Bengel Mitsuru Momose Andrea Sammer Felix Haas Bernhard Schnackenburg Wolfram Delius Harald Mudra Dieter Wolfram Markus Schwaiger | 2002 | Circulation: Journal of the American Heart Association2002，，2： | 1 |
| 9 | Harnessing nonlinearity: Predict- ing chaotic systems and saving energy in wireless telecommu- nication显示文摘 | Herbert Jaeger Harald Haas | 2004 | Science2004，304，5667： | 1 |
| 10 | Indoor optical wireless communication : potential and state-of-the-art 显示文摘 | Hany Elgala Raed Mesleh Harald Haas | 2011 | IEEE Communications Magazine2011，49，9： | 1 |
| 11 | Spatial Pulse Position Modulation for Optical Communications 显示文摘 | Popoola Wasiu O Poves Enrique Haas Harald | 2012 | Journal of Lightwave Technology2012，30，18： | 1 |
| 12 | Inhibition of death receptor - mediated gene induction by a cycloheximide - sensitive factor occurs at the level of or upstream of Fas - associated death domain protein(FADD) 显示文摘 | Harald Wajant Elvira Haas Ralph Schwenzer | 2000 | Biol Chem2000，275，24： | 1 |
| 13 | Spa- tial Modulation for Generalized MIMO:Challenges,Op- portunities,and Implementation显示文摘 | Marco Di Renzo Harald Haas Lajos Hanzo | 2014 | Proceedings of the IEEE2014，102，1： | 1 |
| 14 | Performance comparison of MIMO technique s for optical wireless communications in indoor environments显示文摘 | Fath Thilo Haas Harald | 2013 | IEEE Transactions on Communications2013，61，2： | 1 |
| 15 | Clipping noise in OFDM-based optical wireless communica-tion systems 显示文摘 | Dimitrov Svilen Sinanovic Sinan Haas Harald | 2012 | IEEE Transactions on Communications2012，60，4： | 1 |
| 16 | Clipping noise in OFDM-based optical wireless communication systems显示文摘 | Dimitrov Svilen Sinanovic Sinan Haas Harald | 2012 | IEEE Transactions on Communications2012，60，4： | 1 |
| 17 | On the perform- ance of different OFDM based optical wireless communi- cation systems显示文摘 | Raed Mesleh Hany Elgala Harald Haa | 2011 | IEEE Journal of Optical Communica- tions and Networking2011，3，8： | 1 |
| 18 | LED nonlinea ri ty mitigation techniques in optical wireless OFDM communication systems显示文摘 | Raed Mesleh Hany Elgala Harald Haas | 2012 | Society of America2012，4，11： | 1 |
| 19 | Clipping noise in oFDM-based optical wireless communication systems显示文摘 | Dimitrov Svilen Sinanovic Sinan Haas Harald | 2012 | IEEE Transactions on Communications2012，60，4： | 1 |
| 20 | Spa- tial Modulation for Generalized MIMO:Challenges, Opportunities,and Implementation显示文摘 | Marco Di Renzo Harald Haas All Ghrayeb | 2014 | Proceedings of the IEEE2014，，： | 1 |
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