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| 1 | 5G技术架构及电力应用关键技术概述显示文摘为使垂直行业系统了解5G网络技术,持续推动相关技术研究、方案落地,加快行业应用进程,文章梳理了5G发展现状,系统介绍了5G技术体系及其关键技术。然后基于5G三大典型应用场景,研究提出了5G电力应用场景及业务需求。最后重点阐述了5G网络切片、边缘计算、时间同步、安全隔离等电力应用关键技术,展望了5G行业应用面临的技术挑战,为5G应用技术研究提供参考。 | 王智慧 汪洋 孟萨出拉 滕玲 张庚 吴赛 | 2020 | 电力信息与通信技术2020，18，8： | 41 |
| 2 | 基于隧道多散射信道的车载通信系统建模显示文摘为建立更高效的智能车对车(Vehicle To Vehicle,V2V)通信系统,针对密集隧道空间多入多出系统(Multiple Input Multiple Output,MIMO)移动传播环境,提出新型三维(Three Dimensional,3D)车载多散射通信信道模型.分析波达信号水平面和仰角平面发射角(Angle Of Departure,AOD)和到达角(Angle Of Arrival,AOA)概率密度分布函数(Probability Density Function,PDF).与以往模型及测量对比,提出模型符合真实隧道环境中无线信道特性,拓展了V2V通信技术的研究. | 唐登洪 席晓莉 范倩莹 | 2021 | 电子学报2021，49，5： | 1 |
| 3 | OTFSmodulation performance in a satellite-to-ground channel at sub-6-GHz and millimeter-wave bands with high mobility显示文摘Orthogonal time frequency space(OTFS)modulation has been widely considered for high-mobility scenarios.Satellite-to-ground communications have recently received much attention as a typical high-mobility scenario and face great challenges due to the high Doppler shift.To enable reliable communications and high spectral efficiency in satellite mobile communications,we evaluate OTFS modulation performance for geostationary Earth orbit and low Earth orbit satellite-to-ground channels at sub-6-GHz and millimeter-wave bands in both lineof-sight and non-line-of-sight cases.The minimum mean squared error with successive detection(MMSE-SD)is used to improve the bit error rate performance.The adaptability of OTFS and the signal detection technologies in satellite-to-ground channels are analyzed.Simulation results confirm the feasibility of applying OTFS modulation to satellite-to-ground communications with high mobility.Because full diversity in the delay-Doppler domain can be explored,different terminal movement velocities do not have a significant impact on the performance of OTFS modulation,and OTFS modulation can achieve better performance compared with classical orthogonal frequency division multiplexing in satellite-to-ground channels.It is found that MMSE-SD can improve the performance of OTFS modulation compared with an MMSE equalizer. | Tianshi LI Ruisi HE Bo AI Mi YANG Zhangdui ZHONG Haoxiang ZHANG | 2021 | Frontiers of Information Technology & Electronic Engineering2021，22，4： | 1 |
| 4 | Multi-Traffic Targets Tracking Based on an Improved Structural Sparse Representation with Spatial-Temporal Constraint显示文摘Vehicles or pedestrians tracking is an important task in intelligent transportation system.In this paper,we propose an online multi-object tracking for intelligent traffic platform that employs improved sparse representation and structural constraint.We first build the spatial-temporal constraint via the geometric relations and appearance of tracked objects,then we construct a robust appearance model by incorporating the discriminative sparse representation with weight constraint and local sparse appearance with occlusion analysis.Finally,we complete data association by using maximum a posteriori in a Bayesian framework in the pursuit for the optimal detection estimation.Experimental results in two challenging vehicle tracking benchmark datasets show that the proposed method has a good tracking performance. | YANG Honghong SHANG Junchao LI Jingjing ZHANG Yumei WU Xiaojun | 2022 | Chinese Journal of Electronics2022，31，2： | 0 |
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