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| 1 | mm Wave communications for 5G: implementation challenges and advances显示文摘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 compensate the heavy path loss and increase the communications capacity, phased array beamforming and massive multiple-input multiple-output(MIMO) techniques are employed at both the user equipment(UE) and base stations(BS). Considering the commercial requirements, 5 G mm Wave large array systems should be implemented in an energy-and cost-efficient way with a small form factor. To address above issues and realize a reliable communications link, taking into account the particular characteristics of5 G mm Wave systems, this paper firstly examines the design challenges and trade-offs in system implementations, then some of the design strategies are summarized. At last, recent advance in RF front-end circuits and receiver sub-systems is then highlighted. | Lianming LI Dongming WANG Xiaokang NIU Yuan CHAI Linhui CHEN Long HE Xu WU Fuchun ZHENG Tiejun CUI Xiaohu YOU | 2018 | Science China(Information Sciences)2018，61，2： | 19 |
| 2 | Energy Efficient Multi-Antenna UAV-Enabled Mobile Relay显示文摘In this paper, we study an energy efficient multi-antenna unmanned aerial vehicle(UAV)-enabled half-duplex mobile relaying system under Rician fading channels. By assuming that the UAV follows a circular trajectory at fixed altitude and applying the decode-and-forward relaying strategy, we maximize the energy efficiency by jointly designing beamforming, power allocation, circular radius and flight speed, subject to the sum transmit power constraint on source node and UAV relay node. First, we maximize the end-to-end signal-to-noise ratio by jointly designing beamforming and statistical power allocation. Based on the obtained beamforming and power allocation results, we then obtain a semi closed-form expression of energy efficiency, and finally maximize energy efficiency by optimizing flight speed and circular radius, allowing optimal circular radius to be obtained via numerical computation. Numerical results demonstrate that the proposed scheme can effectively enhance the system energy efficiency. | Qingheng Song Fuchun Zheng | 2018 | China Communications2018，15，5： | 8 |
| 3 | Energy-efficient resource allocation for OFDMA relay systems with imperfect CSIT显示文摘In this paper, we propose an energy-efficient resource allocation scheme for the downlink of decodeand-forward relay-assisted orthogonal frequency division multiple access systems. The resource allocation is designed based on imperfect channel state information at the transmitter. We jointly optimize the power allocation, data rate allocation, and subcarrier allocation to maximize the system energy efficiency(EE). We formulate the EE problem as a probabilistic mixed non-convex optimization problem, in which the individual power constraints and the outage probability requirements are considered. An iterative algorithm based on bisection method is given to transform the optimization problem into a standard concave form. Also, we consider a proportional fairness design for the EE maximization problem. Simulation results illustrate the effectiveness of the proposed algorithm. | WANG XiaoMing ZHENG FuChun ZHU PengCheng MENG Chao YOU XiaoHu | 2015 | Science China(Information Sciences)2015，58，8： | 2 |
| 4 | Quantum-safe cryptography:crossroads of coding theory and cryptography显示文摘We present an overview of quantum-safe cryptography(QSC)with a focus on post-quantum cryptography(PQC)and information-theoretic security.From a cryptographic point of view,lattice and code-based schemes are among the most promising PQC solutions.Both approaches are based on the hardness of decoding problems of linear codes with different metrics.From an information-theoretic point of view,lattices and linear codes can be constructed to achieve certain secrecy quantities for wiretap channels as is intrinsically classical-and quantum-safe.Historically,coding theory and cryptography are intimately connected since Shannon’s pioneering studies but have somehow diverged later.QSC offers an opportunity to rebuild the synergy of the two areas,hopefully leading to further development beyond the NIST PQC standardization process.In this paper,we provide a survey of lattice and code designs that are believed to be quantum-safe in the area of cryptography or coding theory.The interplay and similarities between the two areas are discussed.We also conclude our understandings and prospects of future research after NIST PQC standardisation. | Jiabo WANG Ling LIU Shanxiang LYU Zheng WANG Mengfan ZHENG Fuchun LIN Zhao CHEN Liuguo YIN Xiaofu WU Cong LING | 2022 | Science China(Information Sciences)2022，65，1： | 1 |
| 5 | Blind equalization of nonminmum phase channels: higher order cumulant based algorithm 显示文摘 | ZHENG Fuchun MCLAUGHLIN S MULGREW B | 1993 | IEEE Transactions on Signal Processing1993，41，2： | 1 |
| 6 | Recognition of alkyl ketone molecules based on thickness-shearmode acoustic sensors with calixarene derivatives 显示文摘 | Cao Zhong Zheng Yonglu Gong Fuchun | 2007 | Microchemical Journal2007，86，1： | 1 |
| 7 | Evolutionary Route Planner for Unmanned AirVehicles显示文摘 | Changwen Zheng Lei Li Fanjiang Xu Fuchun Sun Mingyue Ding | 2005 | IEEE Transactions on Robotics2005，21，4： | 1 |
| 8 | Evolutionary Route Planner for Unmanned Air Vehicles显示文摘 | Changwen Zheng Lei Li Fanjiang Xu Fuchun Sun Mingyue Ding | 2005 | IEEE Transactions on Robotics2005，21，4： | 1 |
| 9 | Evolutionary Route Planner for Unmanned Air Vehicles显示文摘 | Changwen Zheng Lei Li Fan jiang Xu Fuchun Sun Mingyue Ding | 2005 | IEEE Transactions on Roboics2005，21，4： | 1 |
| 10 | Image fusion based median filters and SOFM neural networks:a three-step scheme显示文摘 | ZHANG Zhaoli SUN Shenghe ZHENG Fuchun | 2001 | Signal Processing2001，81，6： | 1 |
| 11 | Resource allocation in OFDMA heterogeneous networks for maximizing weighted sum energy efficiency显示文摘In this paper, a resource allocation algorithm for maximizing the weighted sum energy efficiency(EE) is investigated in orthogonal frequency division multiple access(OFDMA) heterogeneous networks(HetNets). We aim to balance the EE of macro cell and low power nodes by subchannel and power allocations. We formulate the problem as a nonlinear sum-of-ratios programming issue, and guarantee data rate requirements of users by using minimum rate constraints. Due to the nonconvexity of the problem, we develop a heuristic subchannel assignment algorithm, and then solve the power allocation problem by parameterized transformations and a first-order approximation based on an iterative algorithm. Numerical results illustrate the convergence and the effectiveness of the proposed algorithm. | Xiaoming WANG Fuchun ZHENG Xia JIA Xiaohu YOU | 2017 | Science China(Information Sciences)2017，60，6： | 0 |
| 12 | A Model-Driven Deep Learning Network for Quantized GFDM Receiver显示文摘Low-resolution analog-to-digital converter(ADC)is a promising solution to reduce hardware cost and power consumption in generalized frequency division multiplexing(GFDM)systems.The severe nonlinear distortion of ADCs and the non-orthogonality of GFDM make receiver design a great challenge.In this paper,we propose a novel model-driven receiver architecture for GFDM with low-resolution ADCs.Orthogonal approximate message passing(OAMP)framework is combined with the classical linear estimator in this work to create a robust iterative receiver for GFDM systems with low-precision ADCs.The corresponding model-driven network is organized based on the proposed novel iterative algorithm according to the procedures of the receiver.The network of OAMP can reduce the gap between the approximate algorithm and the Bayesian optimal result due to the information loss of ADCs.The signal flow of the neural network is designed by unfolding the iterative algorithms for channel estimation and data detection.Numerical results are provided to show that the proposed OAMP-based receiver algorithm outperforms traditional receivers and the model-driven network can further improve the system performance on the basis of the corresponding novel algorithm. | Mengjiao Zhang Chaokai Wen Shi Jin Fuchun Zheng | 2019 | Journal of Communications and Information Networks2019，4，3： | 0 |
| 13 | HetNets Under Decoupled Uplink and Downlink Access with UE Random Discontinuous Transmission: Local Delay and Energy Efficiency显示文摘Due to the limited uplink capability in heterogeneousnetworks (HetNets), the decoupled uplinkand downlink access (DUDA) mode has recently beenproposed to improve the uplink performance. In thispaper, the random discontinuous transmission (DTX)at user equipment (UE) is adopted to reduce the interferencecorrelation across different time slots. By utilizingstochastic geometry, we analytically derive themean local delay and energy efficiency (EE) of an uplinkHetNet with UE random DTX scheme under theDUDA mode. These expressions are further approximatedas closed forms under reasonable assumptions.Our results reveal that under the DUDA mode, there isan optimal EE with respect to mute probability underthe finite local delay constraint. In addition, with thesame finite mean local delay as under the coupled uplinkand downlink access (CUDA) mode, the HetNetsunder the DUDA mode can achieve a higher EE witha lower mute probability. | Zhang Yue Zheng Fuchun Luo Jingjing | 2024 | China Communications2024，21，3： | 0 |
| 14 | COMPLEX NUMBER MODE APPROACH FOR REDUCING VIBRATION OF STRUCTURAL FLEXIBLE REDUNDANT ROBOT MANIPULATORS显示文摘A complex number mode analysis approach is proposed for vibration reducing of structural flexible redundant manipulators by utilizing self motion. In the proposed approach, the self motion is evaluated to nullify the modal exciting force of flexural motion, and the approach can be freely used when the degree of freedom of flexural motion is much greater than the available degree of reundancy. The availability and effectiveness of the proposed approach are demonstrated through numerical simulation with a four link spatial robotic manipulator possessing an end flexible link. | Wu Licheng Sun Zengqi Sun Fuchun Department of Computer Science and Technology, Qinghua University Lu Zhen Yu Shouqian Zheng Hong Beijing University of Aeronautics and Astronautics | 2001 | Chinese Journal of Mechanical Engineering2001，14，2： | 0 |
| 15 | Report on 52 Cases of Infantile Diarrhea Cured by Acupuncture with Massotherapy显示文摘Reporton52CasesofInfantileDiarrheaCuredbyAcupuncturewithMassotherapy￥ZhengFuchun(XiaonanMineLabourHospital,AffliatedtoLiaonin... | Zheng Fuchun(Xiaonan Mine Labour Hospital, Affliated to Liaoning Tiefa Mining Agence.) | 1995 | 中国针灸1995，15，S2： | 0 |
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