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Secure beamforming and deployment design for rate-splitting multiple access-based UAV communications: 《Science China(Information Sciences)》2025年第1期339-353,共15页Bing WANG Xiaofeng TAO Shujun HAN Huici WU Kai YANG Zhu HAN; supported in part by National Natural Science Foundation of China (Grant Nos. 62271076,61932005);Fundamental Research Funds for the Central Universities (Grant No. 2242022k60006);111 Project of China (Grant No. B16006); Rate-splitting multiple access(RSMA)has recently gained attention as a potential robust multiple access(MA)scheme for upcoming wireless networks.Given its ability to efficiently utilize wireless resources and design i...; 关键词：rate-splitting multiple access UAV communication precoding optimization deployment location physical layer security

Manifold optimization assisted centralized hybrid precoding for cell-free massive MIMO systems: 《Science China(Information Sciences)》2023年第11期301-302,共2页Jie LUO Jiancun FAN Yawen WANG Jinbo ZHANG; supported by National Natural Science Foundation of China(Grant No.61671367);Research Foundation of Science and Technology on Communication Networks Laboratory。; In the sixth generation(6G)wireless communication,cellfree massive multiple-input multiple-output(MIMO)has emerged as a promising technology due to it can improve macro diversity gain,enhance edge user service quality...; 关键词：MIMO MASSIVE wireless

Self-attention reinforcement learning for multi-beam combining in mmW ave 3D-MIMO systems: 《Science China(Information Sciences)》2023年第6期200-217,共18页Yingzhi HUANG Zhaoyang ZHANG Jingze CHE Zhaohui YANG Qianqian YANG Kai-Kit WONG; supported in part by National Key R&D Program of China (Grant Nos.2020YFB1807101,2018YFB1801104);National Natural Science Foundation of China (Grant Nos.61725104,U20A20158,61922071)。; Machine learning(ML)has been empowering all aspects of the wireless communication system design,among which,the reinforcement learning(RL)-based approaches have attracted a lot of research attention since they can int...; 关键词：reinforcement learning(RL) deep deterministic policy gradient(DDPG) self-attention precoding/combining millimeter-wave(mmWave) multi-input multi-output(MIMO)

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

Optical true time delay pool based hybrid beamformer enabling centralized beamforming control in millimeter-wave C-RAN systems被引量：1: 《Science China(Information Sciences)》2021年第9期198-207,共10页Huan HUANG Chongfu ZHANG Muchuan YANG Wei ZHENG Jie PENG Kun QIU; This work was supported by National Key R&D Program of China(Grant No.2018YFB1801302);Project for Zhongshan Social Public Welfare Science(Grant No.2019B2007)。; Effectively supporting millimeter-wave(mmWave) beamforming is still a major challenge in 5G cloud radio access network(5 G C-RAN) systems with evolved common public radio interface-based(eCPRIbased)fronthaul. Herein, ...; 关键词：optical true time delay MIMO system millimeter wave cloud radio access network multi-user hybrid precoding

Energy-efficient design for mmW ave-enabled NOMA-UAV networks被引量：10: 《Science China(Information Sciences)》2021年第4期36-49,共14页Xiaowei PANG Jie TANG Nan ZHAO Xiuyin ZHANG Yi QIAN; supported by National Natural Science Foundation of China(Grant Nos.61871065,61971194)。; Owing to the recent advances of non-orthogonal multiple access(NOMA)and millimeter-wave(mmWave),these two technologies are combined in unmanned aerial vehicle(UAV)networks in this paper.However,energy efficiency has b...; 关键词：energy efficiency hybrid precoding MILLIMETER-WAVE non-orthogonal multiple access placement optimization power allocation unmanned aerial vehicle

Angular domain precoding-based PAPR reduction for massive MIMO systems: 《Science China(Information Sciences)》2019年第10期220-222,共3页Ting LIU Luyao NI Shi JIN Xiaohu YOU; supported in part by National Science Foundation for Distinguished Young Scholars of China (Grant No. 61625106);National Natural Science Foundation of China (Grant No. 61531011); Dear editor,Massive multiple-input multiple-output (MIMO)is a key technology of the fifth generation wireless communication systems (1, 2)Angle division multiple access (ADMA)[3] is one of the multiple access technolo...; 关键词：Angular DOMAIN precoding-based PAPR reduction for MASSIVE MIMO systems DOMAIN

Robust MMSE precoding for massive MIMO transmission with hardware mismatch被引量：3: 《Science China(Information Sciences)》2018年第4期167-180,共14页Yan CHEN Xiqi GAO Xiang-Gen XIA Li YOU; supported by National Natural Science Foundation of China(Grant Nos.61320106003,61471113,61521061,61631018);National High Technology Research and Development Program of China(863)(Grant Nos.2015AA01A701,2014AA01A704);National Science and Technology Major Project of China(Grant No.2014ZX03003006-003);Huawei Cooperation Project; Due to hardware mismatch, the channel reciprocity of time-division duplex massive multipleinput multiple-output system is impaired. Under this condition, there exist several different approaches for base station（BS）...; 关键词：robust precoding massive MIMO hardware mismatch channel estimation large dimensional RMT

mm Wave communications for 5G: implementation challenges and advances被引量：22: 《Science China(Information Sciences)》2018年第2期1-19,共19页Lianming LI Dongming WANG Xiaokang NIU Yuan CHAI Linhui CHEN Long HE Xu WU Fuchun ZHENG Tiejun CUI Xiaohu YOU; supported by National High-Tech Project(863)of China(Grant Nos.2011AA010201,2011AA010202);National Nature Science Foundation of China(Grant Nos.61306030,61674037);National Key R&D Program of China(Grant No.2016YFC0800400);Fundamental Research Funds for the Central Universities; The requirement of the fifth generation（5 G） wireless communication for high throughput motivates the wireless industry to use the mm Wave（millimeter wave） communications for its wide bandwidth advantage. To compe...; 关键词：millimeter wave massive MIMO beamforming hybrid precoding channel estimation phased array power amplifier voltage controlled oscillator（VCO）

On the use of H-inf criterion in channel estimation and precoding in massive MIMO systems: 《Science China(Information Sciences)》2017年第2期147-160,共14页Peng XU Dongming WANG Feng QI; supported by Basic Scientific Research Business Expenses of China(Grant No.N152304009);National Natural Science Foundation of China(Grant Nos.61271205,61374097,61300195,61473066,61403069); In this paper, a channel estimation（CE） and precoding scheme by using H-infinity（H-inf） criterion for mitigation of pilot contamination（PC） in massive multiple input multiple output（MIMO） orthogonal frequency ...; 关键词：massive MIMO pilot contamination PRECODING channel estimation H-inf

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