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  1. 42601
  2. 42602

    Low complexity codebook search method in massive MIMO system by Jianfei LIU, Liping HE, Ying TAO, Di LIU, Xiangye ZENG, Mengjun WANG

    Published 2019-01-01
    “…In Massive MIMO systems for 5G networks,precoding technology is one of the key technologies.Aiming at user side codebook search method of the discrete Fourier transform (DFT) rotation codebook,a low complexity search algorithm was proposed.In this algorithm,all horizontal and vertical codebooks were grouped separately according to the characteristics that the precoding vectors with the same column of DFT rotation codebooks had the smallest chordal distance and the smaller chordal distance have the stronger correlation,and then the optimal horizontal and vertical codewords with maximum channel gain were obtained to form 3D precoding code-books.The simulation results indicate that the searching complexity of the proposed method is significantly reduced under conditions of insuring the system performance,moreover,this advantage becomes greater with the number of antennas increasing.…”
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  3. 42603
  4. 42604
  5. 42605
  6. 42606
  7. 42607
  8. 42608
  9. 42609

    Research on content distribution mechanism of MP2P networks by Guo-yin ZHANG, Lu LI, Jian-guo SUN, Xiang-hui WANG

    Published 2013-05-01
    “…In consideration of the current MP2P network disturbance from frequent location changes of the mobile nodes,the limited computing power and storage capacity,a flexible strategy of partition management by assigning different functions to nodes according to some standards,regarding a subnet as a unit and using super-nodes to manage subnets were proposed.In order to speed up the data transmission and replacement efficiency,data was processed with partial network coding technology.Additionally,a trans-subnet query algorithm was proposed to link subnets,conduct informa-tion exchange between subnets and resource location.Results of the experiment manifested that this strategy can effi-ciently increase the resource download success rate and hit rate,reduce the average delay,improve the content distribu-tion efficiency of MP2P networks,and simultaneously enhance system robustness.…”
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  10. 42610

    Resource optimization of secure energy efficiency based on mmWave massive MIMO-NOMA system with SWIPT by Fei ZHAO, Wanming HAO, Gangcan SUN, Yiqing ZHOU, Fei WANG, Yi WANG

    Published 2020-08-01
    “…The secure energy efficiency (SEE) problem was investigated for the millimeter wave (mmWave) multiple input multiple output (MIMO) non-orthogonal multiplex access (NOMA) systems with simultaneous wireless information and power transfer (SWIPT) in the presence of multiple legitimate receiver (LR) and an eavesdropper.LR was first grouped according to the channel state information and the cluster heads of each group were selected,then the LR of each cluster was served by each beam with NOMA and hybrid precoding technology.Based on this,a SEE maximization problem was formulated by optimizing power allocation and power splitting factors.The Dinkelbach algorithm and first order Taylor approximation were proposed to transform the original non-convex problem into a convex one,and an iterative algorithm was developed to solve it.Finally,numerical results show that the proposed scheme can effectively improve the SEE.…”
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  11. 42611

    DEVELOPMENT OF ELECTRONIC TEXTBOOKS IN HELPNDOC SYSTEM by Alexander Yu. Stremnev

    Published 2016-12-01
    “…The paper emphasizes that the tools should be capable of creating high quality teaching resources by the authors with only basic knowledge in information technology.…”
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  12. 42612
  13. 42613

    Preliminary Study of Bioinformatics Patents and Their Classifications Registered in the KIPRIS Database by Hyun-Seok Park

    Published 2012-12-01
    “…A detailed analysis of registered bioinformatics patents, using the existing patent search system, can provide valuable information links between science and technology. However, it is extremely difficult to select keywords to capture bioinformatics patents, reflecting the convergence of several underlying technologies. …”
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  14. 42614

    Research on the scalability of parallel community detection algorithms by Qiang LIU, Yan JIA, Binxing FANG, Bin ZHOU, Yue HU, Jiuming HUANG

    Published 2018-04-01
    “…The social network often contains a large amount of information about users and groups,such as topic evolution mode,group aggregation effect,the law of information dissemination and so on.The mining of these information has become an important task for social network analysis.As one characteristic of the social network,the group aggregation effect is characterized by the community structure of the social network.The discovery of community structure has become the basis and key point of other social network analysis tasks.With the rapid growth of the number of online social network users,the traditional community detection methods have been difficult to be used,which contributes to the development of parallel community detection technology.The current mainstream parallel community detection methods,including Louvain algorithm and label propagation algorithm,were tested in the large-scale data sets,and corresponding advantages and disadvantages were pointed out so as to provide useful information for later applications.…”
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  15. 42615

    Theoretical Model of the Relationship between Single Embryo Transfer Rate and Multiple Pregnancy Rate in Japan by Syuichi Ooki

    Published 2012-01-01
    “…The purpose of the present study was to examine the effect of single embryo transfer (SET) in assisted reproductive technology (ART) on the reduction of the multiple pregnancy rate. …”
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  16. 42616

    Platform work and labour legislation in India: Women’s engagement and the role of gender by Neha Arya, Abhishek Nemuri

    Published 2024-12-01
    “…Through detailed analysis of workers’ reviews and experiences, this paper calls for a calibrated alignment of India's legal framework with the swiftly evolving technological landscapes globally. In this, it emphasizes gender inclusivity to ensure equitable labour market opportunities.…”
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  17. 42617

    A Compendium of Magnetic Nanoparticle Essentials: A Comprehensive Guide for Beginners and Experts by Carlos O. Amorim

    Published 2025-01-01
    “…Magnetic nanoparticles (MNPs) are advanced materials that combine the unique properties of magnetic materials and nanoscale dimensions, enabling a wide range of applications in biomedicine, environmental science, and information technology. This review provides a comprehensive yet accessible introduction to the fundamental principles, characterization techniques, and diverse applications of MNPs, with a focus on their nanoscale magnetic properties, such as superparamagnetism, single-domain behavior, and surface effects. …”
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  18. 42618

    Three-dimensional reconstruction from computed tomography images of respiratory system in new zealand rabbits by Mustafa Orhun Dayan, Kamil Besoluk

    “…<p> <b>Conclusion:</b> The results obtained using the technology applied in this study may be a key to future investigations and to a new approach to anatomical science.…”
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  19. 42619

    Revolutionizing cross-border e-commerce: A deep dive into AI and big data-driven innovations for the straw hat industry. by Junjie Dai, Xiaoyan Mao, Pengyue Wu, Huijie Zhou, Lei Cao

    Published 2024-01-01
    “…The integration of AI-generated content (AIGC) technology facilitates streamlined design-to-production cycles and rapid adaptation to market changes and consumer feedback. …”
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