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Beamforming and fronthaul compression design for intelligent reflecting surface aided cloud radio access Research Article

Yu ZHANG, Xuelu WU, Hong PENG, Caijun ZHONG, Xiaoming CHEN,yzhang@zjut.edu.cn,ph@zjut.edu.cn,caijunzhong@zju.edu.cn,chen_xiaoming@zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 1,   Pages 31-46 doi: 10.1631/FITEE.2100307

Abstract: We investigate the joint design and optimization of user transmit beamformers, IRS passive beamformers

Keywords： Cloud radio access network (C-RAN)     Intelligent reflecting surface (IRS)     Transmit beamforming     Fronthaul    

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Beamforming techniques for massive MIMO systems in 5G: overview, classification, and trends for future Review

Ehab ALI, Mahamod ISMAIL, Rosdiadee NORDIN, Nor Fadzilah ABDULAH

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 6,   Pages 753-772 doi: 10.1631/FITEE.1601817

Abstract: Massive multiple-input multiple-output (MIMO) systems combined with beamforming antenna array technologiesobjective of this review paper is to discuss the state-of-the-art research on the most favourable types of beamformingtechniques that can be deployed in massive MIMO systems and to clarify the importance of beamformingClassifications of optimal beamforming techniques that are used in wireless communication systems areTo overcome the limitations in the literature, we have suggested an optimal beamforming technique that

Keywords： Beamforming classifications     Massive MIMO     Hybrid beamforming     Millimetre-wave beamforming    

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On Differentiation Among Pilot Signals of Multiple Mobile Targets in Retro-Reflective Beamforming for Article

Xin Wang, Long Li, Tie Jun Cui, Mingyu Lu

Engineering 2023, Volume 30, Issue 11,   Pages 55-62 doi: 10.1016/j.eng.2023.08.010

Abstract:

An experimental study is conducted on several retro-reflective beamforming schemes for wireless power

Keywords： Wireless power transmission     Microwave antenna array     Retro-reflective beamforming     Pilot signal     Multiple    

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Joint cooperative beamforming and artificial noise design for secureAF relay networks with energy-harvesting Article

He-hao NIU, Bang-ning ZHANG, Dao-xing GUO, Yu-zhen HUANG, Ming-yue LU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 6,   Pages 850-862 doi: 10.1631/FITEE.1601832

Abstract: We propose a joint robust cooperative beamforming and artificial noise scheme for secure communication

Keywords： Simultaneous wireless information and power transfer     Physical layer security     Relay networks     Cooperative beamforming    

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Low complexity robust adaptive beamforming for general-rank signal model with positive semidefinite constraint Article

Yu-tang ZHU,Yong-bo ZHAO,Jun LIU,Peng-lang SHUI

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 11,   Pages 1245-1252 doi: 10.1631/FITEE.1601112

Abstract: We propose a low complexity robust beamforming method for the general-rank signal model, to combat againstSimulation results verify the validity and robustness of the proposed beamforming method.

Keywords： Beamforming     General-rank     Low complexity     Positive semidefinite (PSD) constraint     Model mismatches    

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Ag/PMMA hollow waveguide for solar energy transmission

He LAN, Jianjun HAN, Hongping CHEN, Xiujian ZHAO

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 303-307 doi: 10.1007/s11705-010-0565-y

Abstract: This paper describes an elaborate study on obtaining Ag/PMMA (polymethyl methacrylate) leaky hollow waveguide which has a large aperture and low loss in transmitting solar energy. Through analyses and comparison, a quartz capillary with the inner diameter of 2 mm was chosen as hollow waveguide. We used the xenon light source, which has the similar spectrum as the sunlight to test and analyze the performance of the Ag/PMMA leakage hollow waveguide. The results are consistent with the transmitted theory of the dielectric/metal leaky type well. Meanwhile, the Ag/PMMA leaky-type hollow waveguide in this work had good qualities. Therefore, it will be a satisfactory medium for solar energy transmission.

Keywords： hollow waveguide     transmit the solar energy     Ag/PMMA multiple film     parabolic collector    

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Optimization of a robust collaborative-relay beamforming design for simultaneous wireless information None

Lu-lu ZHAO, Xing-long JIANG, Li-min LI, Guo-qiang ZENG, Hui-jie LIU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 11,   Pages 1432-1443 doi: 10.1631/FITEE.1601268

Abstract:

We investigate a collaborative-relay beamforming design for simultaneous wireless information andA non-robust beamforming design that assumes availability of perfect channel state information (CSI)In practical scenarios, CSI errors are usually inevitable; therefore, a robust collaborativerelay beamformingsemidefinite relaxation (SDR) technique, the non-convex optimization problems of both non-robust and robust beamformingSimulation results show that under an imperfect CSI case, the proposed robust beamforming design can

Keywords： Simultaneous wireless information and power transfer     Channel state information     Robust beamforming     Semidefinite    

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Supermodular interference suppression game for multistatic MIMO radar networks and multiple jammers with multiple targets Research Article

Bin HE, Hongtao SU,aihebin19@163.com,suht@xidian.edu.cn

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 4,   Pages 617-629 doi: 10.1631/FITEE.2000652

Abstract: To deal with the threat of the new generation of electronic warfare, we establish a non-cooperative countermeasure game model to analyze and interference suppression between multistatic multiple-input multiple-output (MIMO) radars and in this study. First, according to the strategy, a supermodular game framework with a fixed weight (FW) vector is constructed. At the same time, a constrained optimization model for maximizing the radar utility function is established. Based on the utility function, the best strategies for the radars and jammers are obtained. The existence and uniqueness of the Nash equilibrium (NE) of the are proved. A algorithm with FW is proposed which converges to the NE. In addition, we use adaptive methods to suppress cross-channel interference that occurs as direct wave interferences between the radars and jammers. A algorithm for joint and is also proposed. The algorithm can ensure the best , and also improves the interference suppression ability of the . Finally, the effectiveness and convergence of two algorithms are verified by numerical results.

Keywords： Supermodular game     Power allocation     Beamforming     MIMO radar     Multiple jammers    

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Controller area network node reliability assessment based on observable node information Article

Lei-ming ZHANG, Long-hao TANG, Yong LEI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 5,   Pages 615-626 doi: 10.1631/FITEE.1601029

Abstract: The method estimates the transmit error counter (TEC) of any node in the network based on the network

Keywords： Controller area network (CAN)     Transmit error counter (TEC)     TEC value estimation     Bayesian network    

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Dot-shaped beamforming analysis of subarray-based sin-FDA Research Article

Bo Wang, Jun-wei Xie, Jing Zhang, Jia-ang Ge,wb_wangbo1991@163.com

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 10,   Pages 1429-1444 doi: 10.1631/FITEE.1800722

Abstract: However, the range-angle coupling inherent in the FDA transmit beampattern may degrade the output signal-to-interference-plus-noisethat the proposed approach outperforms the existing log-FDA with logarithmical frequency offset in transmit

Keywords： 频率分集阵列；子阵频率分集阵列；解耦；点状波束形成    

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Correlated channelmodel-based securecommunications in dual-hopwireless communication networks Article

Zhen-hua YUAN, Chen CHEN, Xiang CHENG, Guo-cheng LV, Liu-qing YANG, Ye JIN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 6,   Pages 796-807 doi: 10.1631/FITEE.1700023

Abstract: This article is focused on secure relay beamformer design with a correlated channel model in the relay-eavesdropper network. In this network, a single-antenna source-destination pair transmits secure information with the help of an amplify-and-forward (AF) relay equipped with multiple antennas, and the legitimate and eavesdropping channels are correlated. The relay cannot obtain the instantaneous channel state information (CSI) of the eavesdropper, and has only the knowledge of correlation information between the legitimate and eavesdropping channels. Depending on this information, we derive the conditional distribution of the eavesdropping channel. Two beamformers at the relay are studied for the approximate ergodic secrecy rate: (1) the generalized match-andforward (GMF) beamformer to maximize the legitimate channel rate, and (2) the general-rank beamformer (GRBF). In addition, one lower-bound-maximizing (LBM) beamformer at the relay is discussed for maximizing the lower bound of the ergodic secrecy rate. We find that the GMF beamformer is the optimal rank-one beamformer, that the GRBF is the iteratively optimal beamformer, and that the performance of the LBM beamformer for the ergodic secrecy rate gets close to that of the GRBF for the approximate secrecy rate. It can also be observed that when the relay has lower power or the channel gain of the second hop is low, the performance of the GMF beamformer surpasses that of the GRBF. Numerical results are presented to illustrate the beamformers’ performance.

Keywords： Physical layer security     Relay beamforming     Correlated channels     Ergodic secrecy rate    

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Properties of a general quaternion-valued gradient operator and its applications to signal processing

Meng-di Jiang, Yi Li, Wei Liu,w.liu@sheffield.ac.uk

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 2,   Pages 83-95 doi: 10.1631/FITEE.1500334

Abstract: The gradients of a -valued function are often required for ic algorithms. The HR provides a viable framework and has found a number of applications. However, the applications so far have been limited to mainly real-valued functions and linear -valued functions. To generalize the operator to nonlinear functions, we define a restricted version of the HR operator, which comes in two versions, the left and the right ones. We then present a detailed analysis of the properties of the operators, including several different product rules and chain rules. Using the new rules, we derive explicit expressions for the derivatives of a class of regular nonlinear -valued functions, and prove that the restricted HR gradients are consistent with the gradients in the real domain. As an application, the derivation of the least mean square algorithm and a nonlinear adaptive algorithm is provided. Simulation results based on vector sensor arrays are presented as an example to demonstrate the effectiveness of the -valued signal model and the derived algorithm.

Keywords： operator     Signal processing     Least mean square (LMS) algorithm     Nonlinear adaptive filtering     Adaptive beamforming    

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Title Author Date Type Operation

Beamforming and fronthaul compression design for intelligent reflecting surface aided cloud radio access

Yu ZHANG, Xuelu WU, Hong PENG, Caijun ZHONG, Xiaoming CHEN,yzhang@zjut.edu.cn,ph@zjut.edu.cn,caijunzhong@zju.edu.cn,chen_xiaoming@zju.edu.cn

Journal Article

Beamforming techniques for massive MIMO systems in 5G: overview, classification, and trends for future

Ehab ALI, Mahamod ISMAIL, Rosdiadee NORDIN, Nor Fadzilah ABDULAH

Journal Article

On Differentiation Among Pilot Signals of Multiple Mobile Targets in Retro-Reflective Beamforming for

Xin Wang, Long Li, Tie Jun Cui, Mingyu Lu

Journal Article

Joint cooperative beamforming and artificial noise design for secureAF relay networks with energy-harvesting

He-hao NIU, Bang-ning ZHANG, Dao-xing GUO, Yu-zhen HUANG, Ming-yue LU

Journal Article

Low complexity robust adaptive beamforming for general-rank signal model with positive semidefinite constraint

Yu-tang ZHU,Yong-bo ZHAO,Jun LIU,Peng-lang SHUI

Journal Article

Ag/PMMA hollow waveguide for solar energy transmission

He LAN, Jianjun HAN, Hongping CHEN, Xiujian ZHAO

Journal Article

Optimization of a robust collaborative-relay beamforming design for simultaneous wireless information

Lu-lu ZHAO, Xing-long JIANG, Li-min LI, Guo-qiang ZENG, Hui-jie LIU

Journal Article

Supermodular interference suppression game for multistatic MIMO radar networks and multiple jammers with multiple targets

Bin HE, Hongtao SU,aihebin19@163.com,suht@xidian.edu.cn

Journal Article

Controller area network node reliability assessment based on observable node information

Lei-ming ZHANG, Long-hao TANG, Yong LEI

Journal Article

Dot-shaped beamforming analysis of subarray-based sin-FDA

Bo Wang, Jun-wei Xie, Jing Zhang, Jia-ang Ge,wb_wangbo1991@163.com

Journal Article

Correlated channelmodel-based securecommunications in dual-hopwireless communication networks

Zhen-hua YUAN, Chen CHEN, Xiang CHENG, Guo-cheng LV, Liu-qing YANG, Ye JIN

Journal Article

Properties of a general quaternion-valued gradient operator and its applications to signal processing

Meng-di Jiang, Yi Li, Wei Liu,w.liu@sheffield.ac.uk

Journal Article