MAXIMIZATION

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Weighted sum power maximization for STAR-RIS-aided SWIPT systems with nonlinear energy harvesting
《Science China(Information Sciences)》2024年第10期339-354,共16页Weiping SHI Cunhua PAN Feng SHU Yongpeng WU Jiangzhou WANG Yongqiang BAO Jin TIAN 
supported in part by National Natural Science Foundation of China(Grant Nos.U22A2002,62071234);Hainan Province Science and Technology Special Fund(Grant No.ZDKJ2021022);Scientific Research Fund Project of Hainan University(Grant No.KYQD(ZR)-21008);Collaborative Innovation Center of Information Technology,Hainan University(Grant No.XTCX2022XXC07);Key Special Project of Technology from Nanjing City Government,China(Grant No.202309010)。
The conventional reconfigurable intelligent surface(RIS)is limited to reflecting incident signals,thereby imposing constraints on the placement of the transmitter and receiver,which hinders achieving comprehensive sig...
关键词：STAR-RIS BEAMFORMING SWIPT alternating optimization nonlinear energy harvesting 
Time and energy efficient data collection via UAV被引量：2
《Science China(Information Sciences)》2022年第8期178-192,共15页Tianhao WANG Xiaowei PANG Jie TANG Nan ZHAO Xiuyin ZHANG Xianbin WANG 
supported by National Key R&D Program of China (Grant No. 2020YFB1807002)。
Using unmanned aerial vehicles(UAVs) for data collection has emerged as a promising technique to achieve both time-and energy-efficient data gathering while keeping data fresh. In this study, two schemes are proposed ...
关键词：data collection energy efficiency maximization time minimization trajectory optimization unmanned aerial vehicle(UAV) 
Regularized two-stage submodular maximization under streaming
《Science China(Information Sciences)》2022年第4期98-107,共10页Ruiqi YANG Dachuan XU Longkun GUO Dongmei ZHANG 
supported by National Natural Science Foundation of China(Grant No.12101587);China Postdoctoral Science Foundation(Grant No.2021M703167);Fundamental Research Funds for the Central Universities(Grant No.EIE40108X2);supported by National Natural Science Foundation of China(Grant No.12131003);Beijing Natural Science Foundation Project(Grant No.Z200002);Longkun GUO was supported by National Natural Science Foundation of China(Grant No.61772005);Outstanding Youth Innovation Team Project for Universities of Shandong Province(Grant No.2020KJN008);Dongmei ZHANG was supported by National Natural Science Foundation of China(Grant No.11871081).
In the problem of maximizing regularized two-stage submodular functions in streams,we assemble a family F of m functions each of which is submodular and is visited in a streaming style that an element is visited for o...
关键词：submodular maximization streaming model TWO-STAGE threshold technique approximation algorithms 
Online remaining-useful-life estimation with a Bayesian-updated expectation-conditional-maximization algorithm and a modified Bayesian-model-averaging method被引量：2
《Science China(Information Sciences)》2021年第1期142-157,共16页Yong YU Xiaosheng SI Changhua HU Jianfei ZHENG Jianxun ZHANG 
National Key R&D Program of China(Grant No.2018YFB1306100);National Natural Science Foundation of China(Grant Nos.61922089,61773386,61833016,61903376,61673311)。
Online remaining-useful-life(RUL)estimation is an effective method with respect to ensuring the safety of complex-huge systems.Generally,current methods assume a specific degradation model when degradation values are ...
关键词：online RUL estimation parameter uncertainty model uncertainty Bayesian method ECM algorithm Bayesian model averaging 
Cumulative activation in social networks
《Science China(Information Sciences)》2019年第5期108-128,共21页Xiaohan SHAN Wei CHEN Qiang LI Xiaoming SUN Jialin ZHANG 
supported in part by National Natural Science Foundation of China (Grant Nos. 61433014, 61502449, 61602440);National Basic Research Program of China (973) (Grant No. 2016YFB1000201)
Most studies on influence maximization focus on one-shot propagation, i.e., the influence is propagated from seed users only once following a probabilistic diffusion model and users' activation are determined via sing...
关键词：social networks CUMULATIVE ACTIVATION influence MAXIMIZATION SEED MINIMIZATION 
Spatial-variant contrast maximization autofocus algorithm for ISAR imaging of maneuvering targets被引量：2
《Science China(Information Sciences)》2019年第4期37-39,共3页Shuai SHAO Lei ZHANG Hongwei LIU Yejian ZHOU 
supported by National Natural Science Foundation of China (Grant Nos. 61771372, 61771367);National Science Foundation for Distinguished Young Scholars (Grant No. 61525105);Fund for Foreign Scholars in University Research and Teaching Programs (the 111 Project) (Grant No. B18039)
Dear editor, High-resolution inverse synthetic aperture radar (ISAR) imaging is hypersensitive to range and azimuth spatial-varicint phase errors [1.2], which are usually caused by target's mancuvering motion. Some st...
关键词：DEAR EDITOR High-resolution inverse ERRORS problem 
Worst-case robust energy harvesting maximization in cellular networks被引量：1
《Science China(Information Sciences)》2018年第8期236-238,共3页Donghua CHEN Yucheng HE Lin ZHOU Rui ZHAO 
supported by Natural Science Foundation of Fujian Province(Grant No.2016J01305)
Dear editor,Wireless energy harvesting(EH)is considered as a promising approach to achieve power selfsustainability in energy restricted communications.In literature,most studies on wireless EH communications focused ...
关键词：IR MS CSI Worst-case robust energy harvesting maximization in cellular networks 
Relative influence maximization in competitive social networks
《Science China(Information Sciences)》2017年第10期248-250,共3页Dingda YANG Xiangwen LIAO Huawei SHEN Xueqi CHENG Guolong CHEN 
supported by National Natural Science Foundation of China(Grant Nos.61472400,61300105);Research Fund for Doctoral Program of Higher Education of China(Grant No.2012351410010);Key Project of Science and Technology of Fujian(Grant No.2013H6012);Key Laboratory of Network Data Science & Technology,and Chinese Science and Technology Foundation(Grant No.CASNDST20140X)
In many realistic scenarios, such as political election and viral marketing, two opposite opinions, i.e., positive opinion and negative opinion, spread simultaneously in the same social networks. Consequently, to achi...
关键词：net RIM Relative influence maximization in competitive social networks Figure 
Robust capacity maximization transceiver design for MIMO OFDM systems
《Science China(Information Sciences)》2016年第6期115-125,共11页Shaozhen GUO Chengwen XING Zesong FEI Dan LI 
supported by China Mobile Research Institute (Grant No. [2014]451);National Natural Science Foundation of China (Grant No. 61421001);111 Project of China (Grant No. B14010);Beijing Natural Science Foundation (Grant No. 4152047)
In this paper, we investigated capacity maximization problem for Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing systems with imperfect channel state information（CSI）. To the best of our kn...
关键词：MIMO-OFDM capacity maximization water-filling channel uncertainty robust design 
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 
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