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Distributed online bandit tracking for Nash equilibrium under partial-decision information setting

science China(Technological sciences) 2023年第11期66卷 3129-3138页

作者： FENG ZhangCheng XU WenYing CAO JinDe YANG ShaoFu RUTKOWSKI Leszek Jiangsu Provincial Key Laboratory of Networked Collective Intelligence School of MathematicsSoutheast UniversityNanjing 211189China Frontiers Science Center for Mobile Information Communication and Security Nanjing 210096China School of Computer Science and Engineering Southeast UniversityNanjing 211189China The Systems Research Institute of the Polish Academy of Sciences Warsaw 01-447Poland AGH University of Science and Technology Krakow 30-059Poland

This paper is concerned with a Nash equilibrium(NE)tracking issue in online games with bandit feedback,where cost functions vary with time and agents only have access to the values of these functions at two points during each round.A partial-decision information setting is considered,in which agents have only access to the decisions of their *** primary objective of this paper is to develop a distributed online NE tracking algorithm that ensures sublinear growth of regret with respect to the total round T,under both the bandit feedback and partial-decision information *** utilizing a two-point estimator together with the leader-following consensus method,a new distributed online NE tracking algorithm is established with the estimated gradient and local estimated decisions based on the projection gradient-descent ***,sufficient conditions are derived to guarantee an improved upper bound of dynamic regret compared to existing bandit ***,a simulation example is presented to demonstrate the effectiveness of the proposed algorithm.

关键词： online game bandit feedback partial-decision two-point gradient estimator

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A new multiple targets tracking algorithm based on improved MHT algorithm

A new multiple targets tracking algorithm based on improved ...

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2022 International Conference on Computer Engineering and Artificial Intelligence, ICCEAI 2022

作者： Sun, Wei Han, Yu Science and Technology on Commuication Information Security Control Laboratory No.36 Research Institute of CETC Jiaxing314033 China

ISBN: (数字)9781665468039

ISBN: (纸本)9781665468039

In this paper, a bearing pretreatment method suitable for passive sonar tracking is proposed, when the ocean background noise fluctuation is large, the weak target can also be detected and tracked through the adaptive adjustment of the threshold. The principle and characteristics of the conventional multi-hypothesis tracking algorithm is explored in this paper, we propose a bearing information pre-processing method suitable for passive sonar tracing and an improved MHT method based on Kalman prediction framework. Finally, automatic tracking problem with multi-Targets based on bearing crossing and ocean background fluctuations can be achieved. The simulation data proves that this method is reliable and practical. © 2022 IEEE.

关键词： Target tracking

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Joint Localization and Environment Sensing by Harnessing NLOS Components in RIS-Aided mmWave communication Systems

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IEEE Transactions on Wireless communications 2023年第12期22卷 8797-8813页

作者： Huang, Yixuan Yang, Jie Tang, Wankai Wen, Chao-Kai Xia, Shuqiang Jin, Shi Southeast University National Mobile Communications Research Laboratory Nanjing210096 China Southeast University School of Automation The Frontiers Science Center for Mobile Information Communication and Security Nanjing210096 China Southeast University National Mobile Communications Research Laboratory The Frontiers Science Center for Mobile Information Communication and Security Nanjing210096 China Institute of Communications Engineering National Sun Yat-sen University Kaohsiung80424 Taiwan Zte Corporation and the State Key Laboratory of Mobile Network and Mobile Multimedia Technology Shenzhen518055 China

This study explores the use of non-line-of-sight (NLOS) components in millimeter-wave (mmWave) communication systems for joint localization and environment sensing. The radar cross section (RCS) of a reconfigurable intelligent surface (RIS) is calculated to develop a general path gain model for RISs and traditional scatterers. The results show that RISs have a greater potential to assist in localization due to their ability to maintain high RCSs and create strong NLOS links. A one-stage linear weighted least squares estimator is proposed to simultaneously determine user equipment (UE) locations, velocities, and scatterer (or RIS) locations using line-of-sight (LOS) and NLOS paths. The estimator supports environment sensing and UE localization even using only NLOS paths. A second-stage estimator is also introduced to improve environment sensing accuracy by considering the nonlinear relationship between UE and scatterer locations. Simulation results demonstrate the effectiveness of the proposed estimators in rich scattering environments and the benefits of using NLOS paths for improving UE location accuracy and assisting in environment sensing. The effects of RIS number, size, and deployment on localization performance are also analyzed. © 2002-2012 IEEE.

关键词： Radar cross section

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Scalable parallel ultrafast optical random bit generation based on a single chaotic microcomb

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Light(science & Applications) 2024年第4期13卷 637-644页

作者： Pu Li Qizhi Li Wenye Tang Weiqiang Wang Wenfu Zhang Brent ELittle Sai Tek Chu KAlan Shore Yuwen Qin Yuncai Wang Institute of Advanced Photonics Technology School of Information EngineeringGuangdong University of TechnologyGuangzhou 51006China. Key Laboratory of Photonic Technology for Integrated Sensing and Communication Ministry of Education of ChinaGuangdong University of TechnologyGuangzhou 51006China. Guangdong Provincial Key Laboratory of Information Photonics Technology Guangdong University of TechnologyGuangzhou 51006China. Key Laboratory of Advanced Transducers andIntelligent Control System Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China. State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China. Department of Physics and Materials Science City University of Hong KongHong KongChina. School of Electronic Engineering Bangor UniversityBangorWales LL571UTUK

Random bit generators are critical for information security,cryptography,stochastic modeling,and *** and scalability are key challenges faced by current physical random bit ***,we propose a massively parallel scheme for ultrafast random bit generation towards rates of order 100 terabit per second based on a single micro-ring resonator.A modulation-instability-driven chaotic comb in a micro-ring resonator enables the simultaneous generation of hundreds of independent and unbiased random bit streams.A proof-of-concept experiment demonstrates that using our method,random bit streams beyond 2 terabit per second can be successfully generated with only 7 comb *** bit rate can be easily enhanced by further increasing the number of comb lines *** approach provides a chip-scale solution to random bit generation for secure communication and high-performance computation,and offers superhigh speed and large scalability.

关键词： resonator random chaotic

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Electro-optically Q-switching performance of diode-pumped HoGdVO4 laser

Electro-optically Q-switching performance of diode-pumped Ho...

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2022 Conference on Infrared, Millimeter, Terahertz Waves and Applications, IMT 2022

作者： Wu, Jiaze Duan, Xiaoming Ding, Yu Ju, Youlun School of Astronautics Harbin Institute of Technology Harbin150001 China National Key Laboratory of Tunable Laser Technology Harbin Institute of Technology Harbin150001 China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin300308 China

ISBN: (纸本)9781510662476

We proposed a Ho:GdVO4 laser operating at 2.05 µm which was directly in-band dual-end-pumped by a pair of 1.94 μm fiber-coupled laser diodes (LD). A Ho:GdVO4 crystal with doping of 1.0 at.% was used as the gain medium. In continuous-wave (CW) mode, we obtained the maximum output power of 6.5 W at 2047.9 nm with the absorbed pump power of 28 W, corresponding to a slope efficiency of 37.6 %. By using an LGS crystal as the electro-optical Q-switch, the highest peak power of 773.8 kW was obtained at a pulse repetition frequency (PRF) of 1 kHz, corresponding to a maximum pulse energy of 3.25 mJ and a pulse width of 4.2ns. © 2023 SPIE.

关键词： Q switching

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Intention recognition based on Hidden Markov Model for aerial target 13

Intention recognition based on Hidden Markov Model for aeria...

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13th International Conference on Signal Processing Systems, ICSPS 2021

作者： Chai, Huimin Zhang, Yong Song, Yanan School of Computer Science and Technology Xidian University Xi'an China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin300308 China

ISBN: (数字)9781510653184

ISBN: (纸本)9781510653177

The method of intention recognition based on HMM for aerial target is provided in the paper. The three HMMs are constructed in order to recognize the attack intention, evasion intention and escape intention respectively. The "left-right"structure is chosen to establish the HMMs. The target sensor data: target speed-approach angle and distance from enemy target to our side, is utilized as the observation sequence of the HMMs. Here, the discretization results of target sensor data are the input to the HMMs. The accuracy of target intention recognition is over 80.0% in simulation experiments, which show that the method is available and effective. © COPYRIGHT SPIE.

关键词： Hidden Markov models

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A Miniaturized Broadband Dual-Polarized Antenna 15

A Miniaturized Broadband Dual-Polarized Antenna

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15th International Conference on Microwave and Millimeter Wave technology, ICMMT 2023

作者： Sun, Tong-Shuai Liu, Zhen-Guo Lu, Wei-Bing State Key Laboratory of Millimeter Waves School of Information Science and Engineering Southeast University Nanjing 210096 China Center for Flexible RF Technology Frontiers Science Center for Mobile Information Communication and Security Southeast University Nanjing 210096 China

ISBN: (纸本)9798350338874

A miniaturized broadband dual-polarized antenna with high isolation and symmetric patterns is designed in this paper. The above antenna consists of two quadrature dipoles, a dielectric post, two coaxial lines, two short pins, and a metal reflector. The proposed antenna comes from the deformation of the metal loop dipole, which has the characteristics of broadband and miniaturization. The adoption of short pins makes the radiation patterns symmetrical and improves the isolation of feed ports, which facilitates the integration of the base station antenna array. The simulations show that the feed port isolation of the proposed antenna is below -30 dB and the length of each dipole is reduced by about 20%. Such an antenna structure facilitates the reduction of coupling between antenna elements and reduces the size of the array. © 2023 IEEE.

关键词： Antenna arrays

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High Precision Translational Compensation for Ultrahigh Resolution ISAR 13

High Precision Translational Compensation for Ultrahigh Reso...

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13th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2021

作者： Yang, Lichao Science and Technology on Communication Information Security Control Laboratory No. 36 Research Institute of CETC China

ISBN: (纸本)9781665418126

In recent years, due to the emergence of ultrahigh resolution (UHR) radar systems, the bandwidth of radar has been increasing. However, conventional imaging algorithms have difficulties in the translational compensation of UHR inverse synthetic aperture radar (ISAR) data with high order range cell migration (RCM) and phase error. In this paper, a high-precision translational compensation method based on power flatness optimization (PFO) is proposed. The algorithm constructs the optimal criterion of power flatness and ensure the complete extraction of the prominent point energy. Then, the original data is compensated in the two-dimensional data domain through the prominent point phase inversion matrix. The results show that the proposed algorithm has significantly improved accuracy in the translational compensation of ultrahigh-resolution ISAR imaging compared with traditional algorithms. © 2021 IEEE.

关键词： Inverse synthetic aperture radar

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Spatiotemporal optical vortices generation in the green and ultraviolet via frequency upconversion[Invited]

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Chinese Optics Letters 2023年第8期21卷 12-16页

作者：高雪晨赵雨薇王珏卢扬张家璇范锦涛胡明列 Ultrafast Laser Laboratory Key Laboratory of Opto-electronic Information Science and Technology of Ministry of EducationSchool of Precision Instruments and Opto-electronics EngineeringTianjin UniversityTianjin 300072China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin 300308China

As a newly discovered type of structured light,a spatiotemporal optical vortex(STOV),which is remarkable for its space–time spiral phase and transverse orbital angular momentum(OAM),has garnered substantial *** previous studies have focused on the generation,characterization,and propagation of STOVs,but their nonlinear frequency conversion remains largely ***,we experimentally demonstrate the generation of green and ultraviolet(UV)STOVs by frequency upconversion of a STOV carried near-infrared(NIR)pulse emitted by a high repetition rate Yb-doped fiber laser amplifier ***,we verify that the topological charge of spatiotemporal OAM(ST-OAM)is doubled along with the optical frequency in the second-harmonic generation(SHG)process,which is visualized by the diffraction patterns of the STOVs in the fundamental and second-harmonic ***,the space–time characteristic of NIR STOV is successfully mapped to UV STOV by sum-frequency mixing STOV at 1037 nm and Gaussian beams in the green ***,we observe the topological charges of the ST-OAM could be degraded owing to strong space–time coupling and complex spatiotemporal astigmatism of such *** results not only deepen our understanding of nonlinear manipulation of STOAM spectra and the generation of STOVs at a new shorter wavelength,but also may promote new applications in both classical and quantum optics.

关键词： ultraviolet spatiotemporal optical vortex second-harmonic generation sum-frequency generation

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Joint Beam Management and SLAM for mmWave communication Systems

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IEEE Transactions on communications 2023年第10期71卷 6162-6179页

作者： Que, Hang Yang, Jie Wen, Chao-Kai Xia, Shuqiang Li, Xiao Jin, Shi Southeast University National Mobile Communications Research Laboratory Nanjing210096 China Southeast University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Frontiers Science Center for Mobile Information Communication and Security Nanjing210096 China Institute of Communications Engineering National Sun Yat-sen University Kaohsiung80424 Taiwan Zte Corporation Shenzhen518055 China State Key Laboratory of Mobile Network and Mobile Multimedia Shenzhen518055 China Southeast University National Mobile Communications Research Laboratory Frontiers Science Center for Mobile Information Communication and Security Nanjing210096 China

The millimeter-wave (mmWave) communication technology, which employs large-scale antenna arrays, enables inherent sensing capabilities. Simultaneous localization and mapping (SLAM) can utilize channel multipath angle estimates to realize integrated sensing and communication design in 6G communication systems. However, existing works have ignored the significant overhead required by the mmWave beam management when implementing SLAM with angle estimates. This study proposes a joint beam management and SLAM design that utilizes the strong coupling between the radio map and channel multipath for simultaneous beam management, localization, and mapping. In this approach, we first propose a hierarchical sweeping and sensing service design. The path angles are estimated in the hierarchical sweeping, enabling angle-based SLAM with the aid of an inertial measurement unit (IMU) to realize sensing service. Then, feature-aided tracking is proposed that utilizes prior angle information generated from the radio map and IMU. Finally, a switching module is introduced to enable flexible switching between hierarchical sweeping and feature-aided tracking. Simulations show that the proposed joint design can achieve sub-meter level localization and mapping accuracy (with an error © 1972-2012 IEEE.

关键词： Mapping

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