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CSI

CSI的相关文献在1992年到2023年内共计1716篇,主要集中在经济计划与管理、无线电电子学、电信技术、自动化技术、计算机技术 等领域,其中期刊论文338篇、会议论文2篇、专利文献1376篇;相关期刊259种,包括上海质量、销售与市场、住宅产业等; 相关会议2种,包括上海地铁运营有限公司科技大会(2006)、2000(第八届)全国有线电视综合信息网学术研讨会等;CSI的相关文献由2119位作者贡献,包括张煜、陈万士、魏超等。

CSI—发文量

期刊论文>

论文:338 占比:19.70%

会议论文>

论文:2 占比:0.12%

专利文献>

论文:1376 占比:80.19%

总计:1716篇

CSI—发文趋势图

CSI

-研究学者

  • 张煜
  • 陈万士
  • 魏超
  • 高秋彬
  • P·加尔
  • W·陈
  • 孙鹏
  • 李辉
  • 骆涛
  • 郝辰曦
  • 期刊论文
  • 会议论文
  • 专利文献

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    • Xinglu Li; Kaizhi Huang; Shaoyu Wang; Xiaoming Xu
    • 摘要: When Internet of Things(IoT)nodes access the network through wireless channels,the network is vulnerable to spoofing attacks and the Sybil attack.However,the connection of massive devices in IoT makes it difficult to manage and distribute keys,thus limiting the application of traditional high-level authentication schemes.Compared with the high-level authentication scheme,the physical layer authentication scheme realizes the lightweight authentication of users by comparing the wireless channel characteristics of adjacent packets.However,traditional physical layer authentication schemes still adopt the one-to-one authentication method,which will consume numerous network resources in the face of large-scale IoT node access authentication.In order to realize the secure access authentication of IoT nodes and regional intrusion detection with low resource consumption,we propose a physical layer authentication mechanism based on convolution neural network(CNN),which uses the deep characteristics of channel state information(CSI)to identify sending nodes in different locations.Specifically,we obtain the instantaneous CSI data of IoT sending nodes at different locations in the pre-set area,and then feed them into CNN for training to procure a model for IoT node authentication.With its powerful ability of data analysis and feature extraction,CNN can extract deep Spatio-temporal environment features of CSI data and bind them with node identities.Accordingly,an authentication mechanism which can distinguish the identity types of IoT nodes located in different positions is established to authenticate the identity of unknown nodes when they break into the pre-set area.Experimental results show that this authentication mechanism can still achieve 94.7%authentication accuracy in the case of a low signalto-noise ratio(SNR)of 0 dB,which means a significant improvement in authentication accuracy and robustness.
    • 王毅; 张禹; 钱宏文
    • 摘要: 为了在工业现场和安防监控领域更好地利用Hi3559强大的视频图像处理能力实现高清视频的远距离传输和智能算法,采用Hi3559+FPGA硬件架构,通过高清数字接口(High Definition Digital Interface,HD-SDI)视频均衡器利用同轴线缆传输方式,设计实现了多路1080P的高清视频传输系统。该设计系统方案主要是解决了Hi3559虽然支持多种Sensor视频接口,但是没有可以直接支持多路HD-SDI摄像头的输入方式和设计方案。该系统利用Hi3559实现了8路HD-SDI视频图像的采集、传输、处理、以及全景显示。相比海思常见的相机串行接口(Camera Serial Interface,CSI)传输方案,采用HD-SDI传输距离更远,理论可达200 m。通过测试和验证,该设计方案可行,传输距离远,工作稳定可靠,对于多路HD-SDI视频的采集传输和全景显示等方向具有较高的推广和应用价值。
    • Wei Cheng; Pei-Sheng Liu; Min-Ju Ying; Feng-Shou Zhang
    • 摘要: Discussions pertaining to enhancement in the luminous efficiency of cesium iodide(CsI)detectors doped with sodium(Na)abound.In this study,the defect structure of one Cs atom replaced by one Na atom is calculated using the ab initio method.Subsequently,the electronic band structures,densities of states,optical absorption spectra,phonons,and transport properties of CsI in perfect and defective structures are investigated.The absorption spectra of CsI with and without Na impurities are compared.It is discovered that the impurity levels in the forbidden band are generated from the shell electron distributions of the impurity atoms,not from lattice distortions.Furthermore,it is discovered that the optical absorption can be enhanced by doping CsI with Na.
    • 张千坤; 陈任翔; 钟志刚; 周国栋
    • 摘要: 提出了一种适用于5G数字化室内分布式系统的通用室内定位方法。该方法首先采集数字化室分天线与终端(UE)之间的信道状态信息(Channel State Information,CSI),其次在时域和频域对CSI进行预处理,得到有效的CSI幅值,然后为减少CSI的重复采样和计算复杂度,构建灰色预测模型GM(1.1)对采集到的CSI样本值进行预测,生成新的CSI序列,最后采用机器学习算法构建室内信号传播模型,即CSI与距离之间的非线性关系,并结合多个天线完成定位。
    • 陆俊
    • 摘要: 2022年世界家具市场将是什么形势?世界家具生产、贸易和消费增速可能是多少?现阶段意大利工业研究中心(CSIL)发布了“2022年世界家具展望”,展望中根据预测2022年全球家具消费增速可能为4%,欧洲和亚洲国家的市场表现将优于其他地区市场。
    • Kyu-haeng Lee
    • 摘要: Recently,as deep learning technologies have receivedmuch attention for their great potential in extracting the principal components of data,there have been many efforts to apply them to the Channel State Information(CSI)feedback overhead problem,which can significantly limit Multi-Input Multi-Output(MIMO)beamforming gains.Unfortunately,since most compression models can quickly become outdated due to channel variation,timely model updates are essential for reflecting the current channel conditions,resulting in frequent additional transmissions for model sharing between transceivers.In particular,the heavy network models employed by most previous studies to achieve high compression gains exacerbate the impact of the overhead,eventually cancelling out the benefits of deep learning-based CSI compression.To address these issues,in this paper,we propose Lightweight CSI Feedback(LCF),a new lightweight CSI feedback scheme.LCF fully utilizes autoregressive Long Short-Term Memory(LSTM)to generate CSI predictions and uses them to train the autoencoder,so that the compression model could work effectively even in highly dynamic wireless channels.In addition,3D convolutional layers are directly adopted in the autoencoder to capture diverse types of channel correlations in three dimensions.Extensive experiments show that LCF achieves a lower CSI compression error in terms of the Mean Squared Error(MSE),using only about 10%of the overhead of existing approaches.
    • 孙德生
    • 摘要: 详细分析当前基于Android系统的车载中控和智能后视镜倒车影像显示系统在系统启动阶段显示慢的问题,如果驾驶员强行倒车可能会带来安全隐患,以及双系统的处理方案成本高,市场接受度不高.通过深入分析车载中控和智能后视镜的Android系统启动流程,提出了一种在U-boot中处理倒车影像显示的解决方案,可以快速处理倒车影像显示,从系统上电到显示倒车画面在2.5s左右完成,非常迅速,也充分考虑了在U-boot过了倒车检测点到内核启动完成具备倒车显示功能时这段盲区的处理方案,充分保障了启动阶段能够快速处理倒车影像显示的功能.该设计不增加硬件成本,经济性好,便于普及.
    • Frankie
    • 摘要: 多年来,我已经评论过多款McIntosh(美国麦景图)的音响器材,独立对线材写评论倒是第一次。其实,McIntosh推出音响线材可不是一朝一夕的事情,我记得多年前就在一个发烧友家里的音响系统里面见过McIntosh的线材。其实大多数的HI-END音响品牌都会找线材生产商定制产品而作为自己的线材,McIntosh最近就重点推出了CSI系列专业线材,特点是搭配不同品牌的功放和音箱都可以令音色升华到更高层次!
    • 禾本(摘译)
    • 摘要: 印度瓦扎克库拉姆(vazhakulam)农业和水果加工公司(VAFPC)的研究人员正着力生产富含菠萝蛋白酶的营养品,以及基于菠萝叶的可生物降解的一次性餐具。这是在印度科学与工业研究理事会(CSIR)国家跨学科科技研究所农业加工技术部的技术支持下进行的。
    • 摘要: 本刊讯(CSIC消息)西班牙研究委员会(CSIC)下属农业化学和食品技术研究所(IATA)已为一种可用于木材和造纸行业的酶申请了专利,这是一种嗜极性木聚糖酶(extremophilic xylanase),可用于减少造纸流程中化学品的使用,提供更环保的替代品。
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