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| 1 | Resource Allocation for Physical Layer Security in Heterogeneous Network with Hidden Eavesdropper显示文摘The tremendous performance gain of heterogeneous networks(Het Nets) is at the cost of complicated resource allocation. Considering information security, the resource allocation for Het Nets becomes much more challenging and this is the focus of this paper. In this paper, the eavesdropper is hidden from the macro base stations. To relax the unpractical assumption on the channel state information on eavesdropper, a localization based algorithm is first given. Then a joint resource allocation algorithm is proposed in our work, which simultaneously considers physical layer security, cross-tier interference and joint optimization of power and subcarriers under fairness requirements. It is revealed in our work that the considered optimization problem can be efficiently solved relying on convex optimization theory and the Lagrangian dual decomposition method is exploited to solve the considered problem effectively. Moreover, in each iteration the closed-form optimal resource allocation solutions can be obtained based on the Karush-Kuhn-Tucker(KKT) conditions. Finally, the simulation results are given to show the performance advantages of the proposed algorithm. | GONG Shiqi XING Chengwen FEI Zesong KUANG Jingming | 2016 | China Communications2016，13，3： | 5 |
| 2 | Cooperative beamforming design for physical-layer security of multi-hop MIMO communications显示文摘The security issue is critically important for wireless communications, especially for multi-hop communications. In this paper, we propose a cooperative secrecy beamforming scheme for a multi-hop MIMO communication network, in which there is a single-antenna source, multiple multi-antenna relays and a singleantenna destination. Moreover, two types of eavesdroppers exist in the network, one of which has known channel state information(CSI), while the other not. To achieve security communications, in our work null-space beamforming and artificial noise beamforming are jointly optimized to improve the secrecy rate of the multi-hop network. In nature, the joint optimization is nonconvex and challenging. Exploiting its structure, the considered optimization problem is decoupled into a series of subproblems that can be efficiently solved based on convex optimization theory. Finally, some numerical experiment results are provided to assess the performance of the proposed secrecy beamforming design. | Shiqi GONG Chengwen XING Zesong FEI Jingming KUANG | 2016 | Science China(Information Sciences)2016，59，6： | 4 |
| 3 | One-step fabrication of three-dimensional porouscalcium carbonate-chitosan composite film as theimmobilization matrix of acetylcholinesterase anHits hiosenfting on pesticide显示文摘 | Gong Jingming Liu Ting Song Dandan | 2009 | ElertrocKemistryCommunications2009，11，： | 1 |
| 4 | Adsorption of heavy metal ions by hierarchically structured magnetite-carbonaceous spheres显示文摘 | Gong Jingming Wang Xiaoqing | 2012 | Talanta2012，101，4： | 1 |
| 5 | Efficient degradation of atrazine through in-situ anchoring NiCo_(2)O_(4) nanosheets on biochar to activate sulfite under neutral condition显示文摘Sulfite (S(IV)) is a promising substitute for sulfate radical-based advanced oxidation processes.Here,a composite of in-situ anchoring Ni Co_(2)O_(4)nanosheets on biochar (BC) was firstly employed as a heterogeneous activator for sulfite (Ni Co_(2)O_(4)@BC-sulfite) to degrade atrazine (ATZ) in the neutral environment.The synergistic coupling of BC and Ni Co_(2)O_(4)endows the resulting composite excellent catalytic activity.82% of the degradation ratio of ATZ (1 mg/L) could be achieved within 10 min at initial concentrations of 0.6 g/L Ni Co_(2)O_(4)@BC,3.0 mmol/L sulfite in neutral environment.When further supplementing sulfite into the system at 20 min (considering the depletion of sulfite),outstanding degradation efficiency (100%) were achieved in the next 10 min without any other energy input by the Ni Co_(2)O_(4)@BC-sulfite system.The features of the prepared catalysts and the effects of some key parameters on ATZ degradation were systematically examined.A strong inner-sphere complexation (≡Co_(2)+/Ni^(2+)-SO_(3)^(2-)) was explored between sulfite and the metal sites on the Ni Co_(2)O_(4)@BC surface.The redox cycle of the surface metal efficiently mediated sulfite activation and triggered the series radical chain reactions.The generated radicals,in particular the surface-bound radicals were involved in ATZ degradation.High performance liquid chromatography-tandem mass spectrometry (LC-MS) technique was used to detect the degradation intermediates.Density functional theory (DFT) calculations were performed to illustrate the possible degradation pathways of ATZ.Finally,an underlying mechanism for ATZ removal was proposed.The present study offered a low-cost and sustainable catalyst for sulfite activation to remove ATZ in an environmentally friendly manner from wastewater. | Lizhen Feng Yijin Yuan Xianqin He Mengsi Wu Lizhi Zhang Jingming Gong | 2023 | Journal of Environmental Sciences2023，，4： | 1 |
| 6 | Electrochemicalbiosensing of methyl parathion pesticide based on acetylcholinesteraseimmobilized onto Au-polypyrrole interlaced network-like nanocomposite显示文摘 | GONG Jingming WANG Lianyi ZHANG Lizhi | 2009 | Biosens Bioelectron2009，24，7： | 1 |
| 7 | A QoE-based jointly subcarrier and power allocation for multiuser multiservice networks显示文摘Quality of experience(QoE) is widely applied to reflect user's satisfaction of the network service,which exactly conforms to the user-centric concept in 5G. In this paper, we propose a QoE-based subcarrier and power allocation algorithm for the downlink transmission of a multiuser multiservice system. For the subcarrier allocation algorithm, the rate proportional fairness factor is defined to ensure the fairness between users. Based on different QoE models of three services, i.e., file down(FD), video streaming and voice over internet protocol(VOIP), a multi-objective optimization method is exploited to allocate the power resource by minimizing the total power consumption and maximizing the mean opinion score(MOS) value of users simultaneously. Simulation results indicate that the proposed algorithm has less power consumption and higher QoE performance than the traditional proportional fairness(PF) algorithm. In addition, the proposed algorithm can achieve nearly the same fairness performance as the PF algorithm. Moreover, when the number of subcarriers becomes larger, the power assumption will be less but with little influence on both the QoE and fairness performances. | Niwei WANG Shiqi GONG Zesong FEI Jingming KUANG | 2016 | Science China Earth Sciences2016，59，12： | 0 |
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