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Trajectory Tracking for mmwave Communication Systems via Cooperative Passive Sensing

ZTE communications 2024年第3期22卷 29-36页

作者： YU Chao LYU Bojie QIU Haoyu WANG Rui Department of Electronic and Electrical Engineering Southern University of Science and TechnologyShenzhen 518000China

A cooperative passive sensing framework for millimeter wave(mmwave)communication systems is proposed and demonstrated in a scenario with one mobile signal ***,in the uplink communication with at least two transmitters,a cooperative detection method is proposed for the receiver to track the blocker’s trajectory,localize the transmitters and detect the potential link blockage *** facilitate detection,the receiver collects the signal of each transmitter along a line-of-sight(LoS)path and a non-line-of-sight(NLoS)path separately via two narrow-beam phased *** NLoS path involves scattering at the mobile blocker,allowing its identification through the Doppler *** comparing the received signals of both paths,the Doppler frequency and angle-of-arrival(AoA)of the NLoS path can be *** resolve the blocker’s trajectory and the transmitters’locations,the receiver should continuously track the mobile blocker to accumulate sufficient numbers of the Doppler frequency and AoA versus time ***,a gradient-descent-based algorithm is proposed for joint *** the reconstructed trajectory,the potential link blockage can be *** is demonstrated that the system can achieve decimeterlevel localization and trajectory estimation,and predict the blockage time with an error of less than 0.1 s.

关键词： mmwave communications integrated sensing and communication trajectory tracking passive sensing

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Joint User Association and Resource Allocation for Self-Backhaul Ultra-Dense Networks

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China communications 2016年第2期13卷 1-10页

作者： LIU Yanping FANG Xuming Provincial Key Laboratory of Information Coding and Transmission Southwest Jiaotong University

In order to meet the exponentially increasing demand on mobile data traffic, self-backhaul ultra-dense networks(UDNs) combined with millimeter wave(mm Wave) communications are expected to provide high spatial multiplexing gain and wide bandwidths for multi-gigabit peak data rates. In selfbackhaul UDNs, how to make the radio access rates of small cells match their backhaul rates by user association and how to dynamically allocate bandwidth for the access links and backhaul links to balance two-hop link resources are two key problems on improving the overall throughputs. Based on this, a joint scheme of user association and resource allocation is proposed in self-backhaul ultra-dense networks. Because of the combinatorial and nonconvex features of the original optimization problem, it has been divided into two subproblems. Firstly, to make the radio access rates of small base stations match their backhaul rates and maximize sum access rates per Hz of all small cells, a proportional constraint is introduced, and immune optimization algorithm(IOA) is adopted to optimize the association indicator variables and the boresight angles of between users and base stations. Then, the optimal backhaul and access bandwidths are calculated by differentiating the general expression of overall throughput. Simulation results indicatethat the proposed scheme increases the overall throughputs significantly compared to the traditional minimum-distance based association scheme.

关键词： ultra-dense networks user association mmwave communications self-backhaul

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维普期刊数据库

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Flexible-beamwidth beam scanning for low-latency cell discovery in mmW ave systems

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Science China(Information Sciences) 2020年第8期63卷 56-58页

作者： Jiancun FAN Rui XU Xinmin LUO Jingon JOUNG School of Electronic and Information Engineering Xi'an Jiaotong University School of Electrical and Electronics Engineering Chung-Ang University

Dear editor,To compensate for a coverage gap in mmW ave communication systems [1], a directional cell search (CS) scheme based on beam scanning was proposed [2–5]. Directional beamforming using a narrow beam (NB) can improve the coverage by considering a high beam gain; however, it will introduce a significant CS delay (CSD) if the beamwidth is too narrow as the beams have to se-

关键词： mmwave communications cell discovery beam scanning flexible-beamwidth beam design 5G/6G

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Beam alignment for millimeter wave multiuser MIMO systems using sparse-graph codes

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Science China(Information Sciences) 2022年第5期65卷 283-284页

作者： Long CHENG Guangrong YUE Pei XIAO Ning WEI Shaoqian LI National Key Laboratory of Science and Technology on communications University of Electronic Science and Technology of China 5GIC&6GIC Institute for Communication Systems(ICS) University of Surrey ZTE Corporation State Key Laboratory of Mobile Network and Mobile Multimedia Technology

Dear editor,To achieve millimeter wave (mmwave) beam alignment, a class of beam scanning and searching schemes have been extensively studied [1–3]. Recently, to address the problems of high sample complexity in tradi... 详细信息

关键词： sparse-graph codes mmwave communications compressed sensing LDPC beam alignment

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