COMMUNICATION_SYSTEMS

作品数：170被引量：195H指数：6
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Beamforming prediction based on the multireward DQN framework for UAV-RIS-assisted THz communication systems
《Science China(Information Sciences)》2024年第12期329-330,共2页Yuewei WU Peng XU Yi LV Dongming WANG Feifei GAO Jiangzhou WANG 
The terahertz(THz)frequency band offers abundant bandwidth resources but is highly sensitive to obstacles.Attaching a reconfigurable intelligent surface(RIS)to an unmanned aerial vehicle(UAV)to achieve 360-degree pano...
关键词：antenna communication RECONFIGURABLE 
Low-complexity beamforming design for IRS-aided communication systems被引量：2
《Science China(Information Sciences)》2022年第10期301-302,共2页Xiaoling HU Mugen PENG Caijun ZHONG 
supported in part by National Key R&D Program of China(Grant No.2021YFB2900200);in part by National Program for Special Support of Eminent Professionals;in part by Young Elite Scientist Sponsorship Program by China Institute of Communications(Grant No.2021QNRC001)。
Dear editor,Recently,intelligent reflecting surface(IRS)has emerged as a promising technology to achieve high spectrum and energy efficiency for wireless communications.To fully achieve the potential of the IRS,the jo...
关键词：BEAMFORMING PASSIVE COMMUNICATION 
Joint frequency-phase estimation for pilot-limited communication systems: a novel method based on length-variable auto-correlation operator被引量：1
《Science China(Information Sciences)》2020年第6期243-245,共3页Hengzhou XU Wenjing WEI Bo ZHANG Mengmeng XU Hai ZHU 
supported in part by National Natural Science Foundation of China(Grant No.61801527)。
Dear editor,Wireless communication systems,such as the fifth-generation(5G),unmanned aircraft vehicle,have widespread applications in our modern society[1–4].This case will significantly decline available spectrum re...
关键词：auto-correlation operator Joint frequency-phase estimation communication systems 
On proactive eavesdropping using anti-relay-selection jamming in multi-relay communication systems被引量：3
《Science China(Information Sciences)》2019年第4期153-162,共10页Yingdong HU Ruifeng GAO Ye LI Shibing ZHANG 
supported by National Natural Science Foundation of China (Grant Nos. 61871241, 61771263, 61801248);Nature Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 18KJB510036)
This paper considers a multi-relay legitimate surveillance system, where a suspicious link may transmit illegal information with the help of relays and a legitimate monitor aims at intercepting the information. We ass...
关键词：PHYSICAL layer security PROACTIVE EAVESDROPPING anti-relay-selection jamming multi-relay BEAMFORMING 
Asynchronous cooperative communication systems:A survey on signal designs被引量：3
《Science China(Information Sciences)》2011年第8期1547-1561,共15页WANG HuiMing 1,2 & XIA XiangGen 3 1 School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049,China 2 State Key Laboratory of Integrated Services Networks, Xidian University,Xi’an 710049, China 3 Department of Electrical and Computer Engineering,University of Delaware,Newark,DE 19716,USA 
supported by the National Natural Science Foundation of China(Grants No.61071125,60971113);the Research Fund for Doctoral Program of Higher Education of China(Grant No.200806980020);the Science Foundation for Innovation Research Group of China(Grant No.60921003);the National Science Foundation(NSF)(Grant No.CCF-0964500);the World Class University(WCU)Program;National Research Foundation,Korea
Cooperative communications is a promising technique for future high speed wireless communications.These systems may be formulated as virtual multi-input multi-output （MIMO） systems where spatial/cooperetive diversit...
关键词：cooperative communications time and frequency offsets space-time coding space-frequency codes full cooperative diversity linear receiver 
A novel method for the improvement of power efficiency in high peak-to-average-power ratio communication systems被引量：4
《Science China(Information Sciences)》2010年第8期1697-1702,共6页REN ZhiYuan ZHANG HaiLin GUO Kai 
supported by the 111 Project (Grant No. B08038);the State Key Laboratory of Integrated Services Networks (Grant No. ISN090105);the Program for New Century Excellent Talents in University (GrantNo. NCET-08-0810);the National Natural Science Foundation of China (Grant No. 60772137);UK-ChinaScience Bridges: R&D on 4G Wireless Mobile Communications, Special Foundation of China Postdoctoral Science Foundation (Grant No. 200902588);China Postdoctoral Science Foundation (Grant No. 20080441166);the Fundamental Research Funds for the Central Universities (Grant No. 72105377)
To solve the problem of low power efficiency of power amplifiers （PA） in the high peak-to-averagepower ratio （PAPR） communication system, a novel signal decomposed amplifier structure has been proposed in order to...
关键词：Green Radio power amplifier signal decomposed 
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