MULTIUSER

作品数：115被引量：114H指数：6
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Beam alignment for millimeter wave multiuser MIMO systems using sparse-graph codes
《Science China(Information Sciences)》2022年第5期279-280,共2页Long CHENG Guangrong YUE Pei XIAO Ning WEI Shaoqian LI 
partly supported by National Key Research and Development Program of China(Grant No.2020YFB1805001);National Natural Science Foundation of China(Grant No.61831004);ZTE Corporation;China Scholarship Council;supported by the UK Engineering and Physical Sciences Research Council(Grant No.EP/P03456X/1)。
Dear editor,To achieve millimeter wave(mmWave)beam alignment,a class of beam scanning and searching schemes have been extensively studied[1–3].Recently,to address the problems of high sample complexity in traditional...
关键词：MILLIMETER MIMO ALIGNMENT 
Low-cost intelligent reflecting surface aided Terahertz multiuser massive MIMO:design and analysis
《Science China(Information Sciences)》2021年第10期69-83,共15页Guanghua YU Xiaoming CHEN Xiaodan SHAO Caijun ZHONG 
supported by National Key R&D Program of China(Grant No.2020YFB1805703);National Natural Science Foundation of China(Grant No.61871344);Zhejiang Provincial Natural Science Foundation of China(Grant No.LR20F010002)。
Terahertz(THz)multiuser massive multiple-input multiple-output(MIMO)has been envisioned as a promising technique to support massive connectivity in next-generation wireless networks.However,due to ultra-high frequency...
关键词：THz communication IRS massive MIMO precoding error coverage enhancement 
Multitask deep learning-based multiuser hybrid beamforming for mm-wave orthogonal frequency division multiple access systems
《Science China(Information Sciences)》2020年第8期35-45,共11页Jing JIANG Yue LI Long CHEN Jianbo DU Chunguo LI 
National Natural Science Foundation of China(Grant Nos.61871321,61901367);National Science and Technology Major Project(Grant No.2017ZX03001012-005);Shaanxi STA International Cooperation and Exchanges Project(Grant No.2017KW-011)。
Multiuser hybrid beamforming of a wideband millimeter-wave(mm-wave)system is a complex combinatorial optimization problem.It not only needs large training data,but also tends to overfit and incur long run-time when mu...
关键词：millimeter wave systems user scheduling deep neural network multitask learning hybrid beamforming 
Energy-efficient Butler-matrix-based hybrid beamforming for multiuser mm Wave MIMO system被引量：2
《Science China(Information Sciences)》2017年第8期44-53,共10页Jiahui LI Limin XIAO Xibin XU Xin SU Shidong ZHOU 
supported by National Basic Research Program of China (973 Program) (Grant No. 2012CB316002);National Natural Science Foundation of China (Grant No. 61201192);National High Technology Research and Development Program of China (863 Program) (Grant No. 2015AA01A701);Science Fund for Creative Research Groups of NSFC (Grant No. 61321061);International Science and Technology Cooperation Program (Grant No. 2012DFG12010);National S&T Major Project (Grant No. 2015ZX03002002);Key Grant Project of Chinese Ministry of Education (Grant No. 313005);Tsinghua University Initiative Scientific Research (Grant No. 2015Z02-3);Open Research Fund of National Mobile Communications Research Laboratory, Southeast University (Grant No. 2012D02);Tsinghua-Qualcomm Joint Research Program
In order to reduce the cost and power consumption of radio frequency（RF） chains in a millimeterwave（mm Wave） multiple-input multiple-output（MIMO） system, hybrid analog/digital beamforming（HBF）can be utilized t...
关键词：Butler matrix ENERGY-EFFICIENT hybrid beamforming MIMO mmWave MULTIUSER 
Energy efficient design for multiuser downlink energy and uplink information transfer in 5G被引量：7
《Science China(Information Sciences)》2016年第2期70-77,共8页Chunguo LI Yanshan LI Kang SONG Luxi YANG 
supported by National Basic Research Program of China(973 Program)(Grant Nos.2012CB316004;2013CB336600);National Natural Science Foundation of China(Grant Nos.61201172;61372101;61221002);National High-tech R&D Program of China(863 Program)(Grant No.2014AA012104);Fundamental Research Funds for the Central Universities and Open Research Fund of Key Lab of Broadband Wireless Comm.and Sensor Network Tech.(NJUPT);Ministry of Education(Grant No.NYKL201502)
Simultaneous wireless information and power transfer（SWIPT） is studied in this paper for the wireless powered downlink（DL） and multiuser information uplink（UL） systems. The objective is to maximize the energy ef...
关键词：energy harvest time allocation energy efficiency uplink multiuser throughput maximization analytical expression 
Robust secure transmission for multiuser MISO systems with probabilistic QoS constraints被引量：7
《Science China(Information Sciences)》2016年第2期122-134,共13页Lijian ZHANG Liang JIN Wenyu LUO Chunming WANG Yanqun TANG 
supported in part by National Natural Science Foundation of China(Grant Nos.61171108;61401510;61379006);National High-tech R&D Program of China(863)(Grant No.SS2015AA011306)
This paper considers a unicast multiuser multiple-input single-output（MISO） downlink system overheard by multiple single-antenna eavesdroppers. The objective is to jointly design the beamforming vectors and the arti...
关键词：physical layer security artificial noise imperfect CSI robust beamforming semidefinite program outage probability 
Transmission capacity maximization for LED array-assisted multiuser VLC systems被引量：4
《Science China(Information Sciences)》2015年第8期112-125,共14页KONG Lei SHEN Hong XU Wei ZHANG Hua ZHAO ChunMing YOU XiaoHu 
supported by National Basic Research Program of China(973 Program)(Grant No.2013CB329204);National Natural Science Foundation of China(Grant Nos.61223001,61471114);Research Fund of National Mobile Communications Research Laboratory,Southeast University(Grant Nos.2015A02,2015B02)
In this paper, we present a light-emitting diode （LED） array-assisted visible light communication （VLC） system. Considering the requirements of illumination, the human eye safety, and the energy saving, we optimiz...
关键词：light-emitting diodes visible light communication power allocation multiuser transmission con-vex relaxation 
Decentralized transceiver optimization for multi-relay aided multiuser MIMO networks
《Science China(Information Sciences)》2014年第8期10-22,共13页SUN Qi LI LiHua MAO JunLing 
supported by National Science and Technology Major Project(Grant No.2013ZX03003016);Creative Research Groups of China(Grant No.61121001);National High-Tech Research&Development Program of China(863)(Grant No.2014AA01A705)
In this paper, the decentralized transceivers and corresponding channel state information （CSI） signaling concepts are proposed for weighted sum rate （WSR） maximization, via linear downlink transceiver＂ optimizat...
关键词：DECENTRALIZED relay MULTIUSER transceiver optimization sum rate maximization 
Per-layer transmit and receive filters design for Tomlinson-Harashima precoding in multiuser MIMO systems
《Science China(Information Sciences)》2012年第4期839-849,共11页HUANG Min CHEN Xiang ZHOU ShiDong WANG Jing 
supported by National High-Tech Research & Development Program of China(Grant No.2009AA011501);National Natural Science Foundation of China(Grant No.60832008);China’s Major Project(Grant No.2009ZX03007003);National Basic Research Program of China(Grant No.2007CB310608);the National Science and Technology Pillar Program(Grant No.2008BAH30B09);Program for Changjiang Scholars and Innovative Research Team in University(Grant No.PCSIRT)
In this paper, the per-layer design for Tomlinson-Harashima precoding （THP） in the downlink of multiuser multiple-input multiple-output （MIMO） systems is investigated. In these systems, the number of the receivers...
关键词：Tomlinson-Harashima precoding multiuser multiple-input multiple-output per-layer joint trans-mit and receive filters design 
Diversity order of multiuser two-way relay networks with beamforming over Nakagami-m fading channels被引量：3
《Science China(Information Sciences)》2011年第9期1986-1990,共5页GUO Hui GE JianHua 
supported by the Program for Changjiang Scholars and Innovative Research Team in University(Grant No. IRT0852);the Natural Science Foundation of Guangdong Province (Grant No. U0635003);the National Major Specialized Project of Science and Technology of China (Grant No. 2009ZX03003-003/004);the "111" Project (Grant No. B08038)
The diversity performance of multiuser two-way relay networks is investigated over Nakagami-m fading channels. We consider an amplify-and-forward relay network with beamforming at the base station and all the mobile s...
关键词：two-way relay MULTIUSER BEAMFORMING diversity order 
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