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中兴通讯技术（英文版）
中兴通讯技术（英文版）

谢大雄

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1673-5188

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0551-5533356

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中兴通讯技术（英文版）/Journal ZTE Communications
查看更多>>ZTE　Communications is a quarterly publication, edited, published and distributed by the Corporate Branding and Communications Department of ZTE Corporation. The magazine focuses on hot telecom topics and front-line telecom technologies, with the sections of “Special Topic”, “Operational Application”, “Research Paper”, “Development Field” and “Lecture Series”. It is a worthwhile magazine for telecom operators and partners of ZTE Corporation alike. The magazine is mainly distributed to telecom operators, science and technology research institutes, relevant government departments, and colleges and universities.
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    Adaptive Hybrid Forward Error Correction Coding Scheme for Video Transmission

    XIONG YuhuiLIU ZhilongXU LingminHUA Xinhai...
    85-93页
    查看更多>>摘要：This paper proposes an adaptive hybrid forward error correction(AH-FEC)coding scheme for coping with dynamic packet loss events in video and audio transmission.Specifically,the proposed scheme consists of a hybrid Reed-Solomon and low-density parity-check(RS-LDPC)coding system,combined with a Kalman filter-based adaptive algorithm.The hybrid RS-LDPC coding accommodates a wide range of code length requirements,employing RS coding for short codes and LDPC coding for medium-long codes.We delimit the short and medium-length codes by coding performance so that both codes remain in the optimal region.Additionally,a Kalman filter-based adaptive al-gorithm has been developed to handle dynamic alterations in a packet loss rate.The Kalman filter estimates packet loss rate utilizing observa-tion data and system models,and then we establish the redundancy decision module through receiver feedback.As a result,the lost packets can be perfectly recovered by the receiver based on the redundant packets.Experimental results show that the proposed method enhances the decoding performance significantly under the same redundancy and channel packet loss.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Waveguide Bragg Grating for Fault Localization in PON

    HU JinLIU XuZHU SonglinZHUANG Yudi...
    94-98页
    查看更多>>摘要：Femtosecond laser direct inscription is a technique especially useful for prototyping purposes due to its distinctive advantages such as high fabrication accuracy,true 3D processing flexibility,and no need for mold or photomask.In this paper,we demonstrate the design and fabrication of a planar lightwave circuit(PLC)power splitter encoded with waveguide Bragg gratings(WBG)using a femtosecond laser in-scription technique for passive optical network(PON)fault localization application.Both the reflected wavelengths and intervals of WBGs can be conveniently tuned.In the experiment,we succeeded in directly inscribing WBGs in 1×4 PLC splitter chips with a wavelength interval of about 4 nm and an adjustable reflectivity of up to 70%in the C-band.The proposed method is suitable for the prototyping of a PLC splitter en-coded with WBG for PON fault localization applications.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Cooperative Distributed Beamforming Design for Multi-RIS Aided Cell-Free Systems

    ZHU YutingXU ZhiyuZHANG Hongtao
    99-106页
    查看更多>>摘要：Cell-free systems significantly improve network capacity by enabling joint user service without cell boundaries,eliminating inter-cell interference.However,to satisfy further capacity demands,it leads to high-cost problems of both hardware and power consumption.In this paper,we investigate multiple reconfigurable intelligent surfaces(RISs)aided cell-free systems where RISs are introduced to improve spectrum efficiency in an energy-efficient way.To overcome the centralized high complexity and avoid frequent information exchanges,a co-operative distributed beamforming design is proposed to maximize the weighted sum-rate performance.In particular,the alternating optimiza-tion method is utilized with the distributed closed-form solution of active beamforming being derived locally at access points,and phase shifts are obtained centrally based on the Riemannian conjugate gradient(RCG)manifold method.Simulation results verify the effectiveness of the proposed design whose performance is comparable to the centralized scheme and show great superiority of the RISs-aided system over the con-ventional cellular and cell-free system.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    ZTE Communications Guidelines for Authors

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      原文链接:
    • NETL
    • NSTL
    • 万方数据