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| 1 | 基于隐私保护的政府大数据治理研究显示文摘5G时代数据的基础性战略资源属性进一步突显,数据是政府推进国家治理体系和治理能力现代化的有力支撑资源和工具。与此同时,个人隐私也逐渐受到关注,成为进一步运用政府大数据需要解决的核心问题之一。在分析5G时代政府大数据隐私新特征、现有数据法律对政府大数据隐私保护的影响的基础上,提出一个基于隐私保护的政府大数据治理模型,探讨5G时代背景下政府如何在利用好自身大数据资源改善服务质量和效率的同时保护公众隐私,以期对新时代政府治理能力提升有所助益。 | 李政 洪莹 | 2020 | 大数据2020，6，2： | 10 |
| 2 | DWDM系统中EDFA串扰引起的误码率恶化研究显示文摘在5G网络中,用户数据通过超密集基站汇集成大数据包,这些数据包被异步交换体制的密集波分复用(DWDM)系统中的掺铒光纤放大器(EDFA)放大时,会产生信道间串扰,导致数据包的误码率(BER)恶化。在测定EDFA增益恢复时间的基础上,对BER恶化进行了深入研究。推导了串扰引起的BER计算公式,讨论了影响BER的因素,搭建了大数据包串扰的实验装置。理论和实验结果表明,一个信道数据包的包长和光功率越大,对另一个信道数据包BER的影响也越大,当数据包的包长小于5μs时,串扰对BER的影响是可以忽略的。 | 陈祥敬 王健 吴重庆 | 2020 | 光学学报2020，40，18： | 5 |
| 3 | Flex Ethernet Technology and Application in 5G Mobile Transport Network显示文摘With the advent of 5G era,the rise of cloud services,virtual reality/virtual reality(AR/VR),vehicle networking and other technologies has put forward new requirements for the bandwidth and delay of the bearer network.Traditional Ethernet technology cannot meet the new requirements very well.Flex Ethernet(FlexE)technology has emerged as the times require.This paper introduces the background,standardization process,functional principle,application mode and technical advantages of FlexE technology,and finally analyses its application prospects and shortcomings in 5G mobile transport network. | Meng Zhang | 2021 | China Communications2021，18，2： | 3 |
| 4 | Design and Implementation of Dynamic High-Speed Switches in Super Base Station Architectures显示文摘Novel centralized base station architectures integrating computation and communication functionalities have become important for the development of future mobile communication networks.Therefore,the development of dynamic high-speed interconnections between baseband units(BBUs)and remote radio heads(RRHs)is vital in centralized base station design.Herein,dynamic high-speed switches(HSSs)connecting BBUs and RRHs were designed for a centralized base station architecture.We analyzed the characteristics of actual traffic and introduced a switch traffic model suitable for the super base station architecture.Then,we proposed a data-priority-aware(DPA)scheduling algorithm based on the traffic model.Lastly,we developed the dynamic HSS model based on the OPNET platform and the prototype based on FPGA.Our results show that the DPA achieves close to 100%throughput with lower latency and provides better run-time complexity than iOCF and HE-iSLIP,thereby demonstrating that the proposed switch system can be adopted in centralized base station architectures. | Yingjiao Ma Jinglin Shi Yiqing Zhou Lin Tian Manli Qian | 2020 | China Communications2020，17，3： | 1 |
| 5 | Improved forward error correction technology of RS-LDPC cascade code in optical transport network显示文摘With the continuous development of optical communication and the increase in data transmission volume,optical transport network(OTN)has become the focus of research in next-generation transmission networks.In the process of data transmission,errors caused by noise often occur,resulting in an increase in the bit error rate(BER)and a decrease in the performance of the optical communication system.Therefore,we use forward error correction(FEC)technology in OTN for error control to improve the transmission efficiency of signals in OTN and reduce the BER.Standard FEC technology uses RS(255,239)code.On this basis,since the performance of low density parity check(LDPC)code is close to the Shannon limit,we propose a method of cascading RS code and LDPC code.Applying this improved FEC technology to OTN,the simulation results show that the improved FEC technology has a reduced BER compared with the standard FEC technology.When the BER is at the 10−3 level,the performance is improved by about 1.7 dB. | MA Xiurong MA Xiaohang SHAN Yunlong | 2023 | Optoelectronics Letters2023，19，10： | 0 |
| 6 | The Analysis of Multiuser Relaying Mixed RF/FSO Networks over Exponentiated Weibull Fading Channel显示文摘In this paper,the performance of multiuser relaying mixed radio frequency(RF)/free space optical(FSO)networks over exponentiated Weibull Fading Channel is studied.Based on the transmit opportunistic scheduling,a unified cumulative distribution function(CDF)of the end-to-end signal to noise ratio(SNR)for multiuser dual-hop relaying system is derived.Then the average symbol error rate(ASER),outage probability and ergodic channel capacity are analyzed in detail.Furthermore,in order to simplify the analysis of system performance,the asymptotic results for the outage probability and ASER are derived at high SNR regime.We also demonstrate Monte Carlo simulation to ensure the effectiveness of the results.The simulation results show that deploying the transmit opportunistic scheme can improve the proposed system performance.And aperture averaging and heterodyne detection technique can suppress the impact of turbulence on FSO networks. | Zhengguang Gao Jiawei Zhang Pengfei Zhu Yuefeng Ji | 2020 | China Communications2020，17，7： | 0 |
| 7 | Artificial intelligence-driven autonomous optical networks: 3S architecture and key technologies显示文摘In the optical networks,the dynamicity,the complexity and the heterogeneity have dramatically increased owing to the deployment of advanced coherent techniques,and the optical cross-connect technologies and diverse network infrastructures pose great challenges in the optical network management and maintenance for the network operators.In this review,we propose a'3 S'architecture for AI-driven autonomous optical network,which can aid the optical networks operated in'self-aware'of network status,'self-adaptive'of network control,and'self-managed'of network operations.To support these functions,a number of artificial intelligence(AI)-driven techniques have been investigated to improve the flexibility and the reliability from the device aspect to network aspect.Adaptative erbium-doped fiber amplifier(EDFA)controlling is an example for the device aspect,which provides a power self-adaptive capability according to the network condition.From the link aspect,adaptive fiber nonlinearity compensation,optical monitoring performance and quality of transmission estimation are developed to monitor and alleviate the link-dependent signal impairments in an automatic way.From the network aspect,traffic prediction and network state analysis methods provide the self-awareness,while automatic resource allocation and network fault management powered by AI enhance the self-adaptiveness and self-management capabilities.Benefit from the sufficient network management data,powerful data-mining capability and matured computation units,these AI techniques have great potentials to provide autonomous features for optical networks,including the network resource scheduling and the network customization. | Yuefeng JI Rentao GU Zeyuan YANG Jin LI Hui LI Min ZHANG | 2020 | Science China(Information Sciences)2020，63，6： | 0 |
| 8 | BCI+VR Rehabilitation Design of Closed-Loop Motor Imagery Based on the Degree of Drug Addiction显示文摘After abusing drugs for long,drug users will experience deteriorated self-control cognitive ability,and poor emotional regulation.This paper designs a closed-loop virtual-reality(VR),motorimagery(MI)rehabilitation training system based on brain-computer interface(BCI)(MI-BCI+VR),aiming to enhance the self-control,cognition,and emotional regulation of drug addicts via personalized rehabilitation schemes.This paper is composed of two parts.In the first part,data of 45 drug addicts(mild:15;moderate:15;and severe:15)is tested with electroencephalogram(EEG)and near-infrared spectroscopy(NIRS)equipment(EEG-NIRS)under the dual-mode,synchronous signal collection paradigm.Using these data sets,a dual-modal signal convolutional neural network(CNN)algorithm is then designed based on decision fusion to detect and classify the addiction degree.In the second part,the MIBCI+VR rehabilitation system is designed,optimizing the Filter Bank Common Spatial Pattern(FBCSP)algorithm used in MI,and realizing MI-EEG intention recognition.Eight VR rehabilitation scenes are devised,achieving the communication between MI-BCI and VR scene models.Ten subjects are selected to test the rehabilitation system offline and online,and the test accuracy verifies the feasibility of the system.In future,it is suggested to develop personalized rehabilitation programs and treatment cycles based on the addiction degree. | Xuelin Gu Banghua Yang Shouwei Gao Honghao Gao Linfeng Yan Ding Xu Wen Wang | 2022 | China Communications2022，19，2： | 0 |
| 9 | 基于全光模式匹配的光包过滤系统显示文摘为了在维护光网络安全的同时,满足当前数据通信大容量、高带宽和低功耗的需求,提出了一种基于全光模式匹配的光包过滤系统,在全光条件下识别并滤除含有指定地址序列的光包。该系统首先通过全光模式匹配模块对光包地址序列与目标序列进行匹配,然后通过匹配结果生成控制信号进而控制光包的通过或滤除。使用VPItransmissionMaker软件进行了仿真验证,结果表明,所提系统可以在100 Gbit/s的传输速率下实现对含有指定地址序列光包的过滤功能。 | 石子成 李新 唐颖 黄善国 | 2022 | 北京邮电大学学报2022，45，3： | 0 |
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