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China Communications 2022年第3期19卷 129-131页

作者： depeng jin Xiaoming Tao Xiaofeng Zhong jintao Wang Department of Electronic Engineering Tsinghua University Department Council Electronic Engineering Dept. Tsinghua Univ Department of Electronic Engineering at Tsinghua University Department of Electronic Engineering at Tsinghua University

AI-Empowered Future Communication Networks Recently, the fifth-generation(5G) of wireless network has been developed to support enhanced mobile broadband(eMBB), massive machine-type communications(mMTC) and ultra-reliable and low-latency communications(uRLLC). However, with the tremendous increase of data services,

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单向拉伸对土-土工织物系统渗透特性的影响试验

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黑龙江工程学院学报 2024年第3期38卷 20-25页

作者：周承国满晓磊周宏奇彭传耀刘京金德鹏滁州学院土木与建筑工程学院安徽滁州239000

为探究单向拉伸对土-土工织物系统渗透性能的影响,选取了同一种类型3种不同规格的有纺土工织物,利用常水头渗透仪分别对经向、纬向拉应变为0%、3%、6%、9%状态下的W100、W120、W150土工织物进行常水头渗透试验,并分析单向拉伸对3种织物... 详细信息

为探究单向拉伸对土-土工织物系统渗透性能的影响,选取了同一种类型3种不同规格的有纺土工织物,利用常水头渗透仪分别对经向、纬向拉应变为0%、3%、6%、9%状态下的W100、W120、W150土工织物进行常水头渗透试验,并分析单向拉伸对3种织物渗透特性的影响。结果表明:不同规格的土工织物在受经向拉伸时,土-土工织物系统的渗透系数呈现出一种先下降再上升的趋势;在受纬向拉伸时,土-土工织物系统的渗透系数不断增大且没有最终稳定值。

关键词：土工织物常水头经向拉伸纬向拉伸渗透特性

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Ginkgo biloba extract alleviates fatty liver hemorrhagic syndrome in laying hens via reshaping gut microbiota

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Journal of Animal Science and Biotechnology 2024年第1期15卷 277-294页

作者： Xinyue Yang depeng Li Meihong Zhang Yuqing Feng Xiaolu jin Dan Liu Yuming Guo Yongfei Hu State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background Ginkgo biloba extract(GBE)is evidenced to be effective in the prevention and alleviation of metabolic disorders,including obesity,diabetes and fatty liver ***,the role of GBE in alleviating fatty liver hemorrhagic syndrome(FLHS)in laying hens and the underlying mechanisms remain to be ***,we investigated the effects of GBE on relieving FLHS with an emphasis on the modulatory role of GBE in chicken gut *** The results showed that GBE treatment ameliorated biochemical blood indicators in high-fat diet(HFD)-induced FLHS laying hen model by decreasing the levels of TG,TC,ALT and *** lipid accumulation and pathological score of liver were also relieved after GBE ***,GBE treatment enhanced the antioxidant activity of liver and serum by increasing GSH,SOD,T-AOC,GSH-PX and reducing MDA,and downregulated the expression of genes related to lipid synthesis(FAS,LXRα,GPAT1,PPARγand Ch REBP1)and inflammatory cytokines(TNF-α,IL-6,TLR4 and NF-κB)in the *** profiling analysis revealed that GBE treatment reshaped the HFD-perturbed gut microbiota,particularly elevated the abundance of Megasphaera in the ***,targeted metabolomic analysis of SCFAs revealed that GBE treatment significantly promoted the production of total SCFAs,acetate and propionate,which were positively correlated with the GBE-enriched gut ***,we confirmed that the GBE-altered gut microbiota was sufficient to alleviate FLHS by fecal microbiota transplantation(FMT).Conclusions We provided evidence that GBE alleviated FLHS in HFD-induced laying hens through reshaping the composition of gut *** findings shed light on mechanism underlying the anti-FLHS efficacy of GBE and lay foundations for future use of GBE as additive to prevent and control FLHS in laying hen industry.

关键词： Antioxidation Fecal microbiota transplantation FLHS Ginkgo biloba extract Inflammation Megasphaera

Compressed SNR-and-Channel Estimation for Beam Tracking in 60-GHz WLAN

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China Communications 2015年第6期12卷 46-58页

作者： GAO Bo ZHANG Changming jin depeng ZENG Lieguang State Key Laboratory on Microwave and Digital Communications Department of Electronic Engineering Tsinghua University

Signal-to-noise ratio(SNR) and channel estimations are critical for 60-GHz communications to track the optimal transmission and reception beam ***,the excessive pilot overhead for the estimations severely reduces system throughput in fast-rotation *** order to address this problem,we firstly demonstrate the potential sparseness property of 60-GHz channel in beam tracking;subsequently,via exploiting this property,we propose a novel compressed SNR-and-channel *** estimation is conducted in a three-stage fashion,including the unstructured estimation,nonzero-tap detection,and structured estimation with nonzero-tap *** simulations show that,in the case of substantial reduction of the pilot overhead,the proposed estimator still reveals a significant improvement in terms of estimation performance over the scheme in IEEE 802.11 ***,it is also demonstrated that the proposed SNR and channel estimators can approach the lower bounds in sparse channels so long as SNR exceeds 8 dB.

关键词：信道估计信噪比千兆赫无线局域网压缩非结构化稀疏信道信号噪声比

Opportunistic spectrum sharing in software defined wireless network

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Journal of Systems Engineering and Electronics 2014年第6期25卷 934-941页

作者： Mao Yang Yong Li depeng jin Li Su Lieguang Zeng Department of Electronic Engineering Tsinghua University

Over the past few decades, the world has witnessed a rapid growth in mobile and wireless networks（MWNs） which significantly change human life. However, proliferating mobile demands lead to several intractable challenges that MWN has to face. Software-defined network is expected as a promising way for future network and has captured growing attention. Network virtualization is an essential feature in software-defined wireless network（SDWN）, and it brings two new entities, physical networks and virtual networks. Accordingly, efficiently assigning spectrum resource to virtual networks is one of the fundamental problems in SDWN. Directly orienting towards the spectrum resource allocation problem, firstly, the fluctuation features of virtual network requirements in SDWN are researched, and the opportunistic spectrum sharing method is introduced to SDWN. Then, the problem is proved as NP-hardness. After that, a dynamic programming and graph theory based spectrum sharing algorithm is *** demonstrate that the opportunistic spectrum sharing method conspicuously improves the system performance up to around 20%–30% in SDWN, and the proposed algorithm achieves more efficient performance.

关键词： software-defined network(SDN) wireless virtualiza-tion opportunistic spectrum sharing dynamic programming graph theory

An Optimization Methodology for Ring Based SDH Network

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An Optimization Methodology for Ring Based SDH Network

Hardware/software co-verification platform for EOS design

2000 International Conference on Communication Technology(WCC2000·ICCT2000)

作者： jin depeng Zeng Lieguang Dept. of Electronic Engineering Tsinghua University

ISBN: (纸本)0780363949

＜正＞SDH has greatly developed as a new transmission system of digital network,the SDH backbone network based on the small SDH local networks has emerged as a two-layer wide area *** of good character of survivability,ring topology has extensively used in this two layer *** optimization has become an urgent problem when designing this *** paper presents a mathematical model for ring based SDH network and a novel optimization *** example is shown to illustrate the algorithm.

关键词： SDH Ring Optimization

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High Technology Letters 2005年第3期11卷 294-297页

作者： Wang Peng（王鹏） jin depeng Zeng Lieguang Department of Electronic Engineering Tsinghua University Beijing 100084 P.R. China Information Engineer University Zhengzhou 450002 P.R. China

Ethernet over SDH/SONET (EOS) is a hotspot in today's data transmission technology for it combines the merits of both Ethernet and SDH/SONET. However, implementing an EOS system on a chip is complex and needs full verifications. This paper introduces our design of Hardware/Software co-verification platform for EOS design. The hardware platform contains a microprocessor board and an FPGA (Field Programmable Gate Array)-based verification board, and the corresponding software includes test benches running in FPGAs, controlling programs for the microprocessor and a console program with GUI (Graphical User Interface) interface for configuration, management and supervision. The design is cost-effective and has been successfully employed to verify several IP (Intellectual Property) blocks of our EOS chip. Moreover, it is flexible and can be applied as a general-purpose verification platform.

关键词：以太网硬件软件数据传输网络技术

An integrated self-healing algorithm for resilient packet ring

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High Technology Letters 2005年第3期11卷 284-288页

作者： Zhou Xiaobo（周晓波） jin depeng Zeng Lieguang School of Electronics and Information Engineering Beijing Jiaotong University Department of Electronic Engineering Tsinghua University

Resilient Packet Ring (RPR) is a Media Access Control (MAC) layer protocol that operates over a double counter-rotating ring network topology. RPR is designed to enhance Synchronous Digital Hierarchy(SDH) in order to handle data traffic more efficiently. Since Intelligent Protection Switching(IPS) is one of the key technologies in ring networks, RPR provides two intelligent protection algorithms: steering and wrapping. While wrapping in RPR in essence inherits the automatic protection switching(APS) algorithm of SDH, it also wastes the bandwidth on the wrapping ringlets and may result in severe congestion. Whereas steering in RPR provides high bandwidth utilization, its switching speed is low, because it is indeed a high layer's restoration algorithm. In this paper, integrated self-healing(ISH) algorithm as an effective algorithm for RPR is proposed, which synthesizes the merits of the two algorithms by transporting healing signal and computing routing in MAC layer. At last, the performance of ISH algorithm is analyzed and simulated.

关键词：弹性信息包环 RPR 媒介存取控制 MAC 自恢复环智能保护开关

Design and Applications of SDH Cross-Connection ASIC

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Design and Applications of SDH Cross-Connection ASIC