Showing 1,301 - 1,320 results of 29,875 for search '"communications"', query time: 0.10s Refine Results
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    Reliability Evaluation for LTE Based CBTC Train Ground Communication Systems by Shuo Wang, Li Zhu, Kun Xu, Lin Zhang, Xuan Wang

    Published 2019-01-01
    “…Nowadays, most communication based train control systems (CBTC) use Wireless Local Networks (WLAN) technology for information transmission. …”
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    Article
  3. 1303

    Multi-feature fusion classification method for communication specific emitter identification by Zunwen HE, Shuai HOU, Wancheng ZHANG, Yan ZHANG

    Published 2021-02-01
    “…A multi-feature fusion classification method based on multi-channel transform projection, integrated deep learning and generative adversarial network (GAN) was proposed for communication specific emitter identification.First, three-dimensional feature images were obtained by performing various transformations, the time and frequency domain projection of the signal was constructed to construct the feature datasets.GAN was used to expand the datasets.Then, a two-stage recognition and classification method based on multi-feature fusion was designed.Deep neural networks were used to learn the three feature datasets, and the initial classification results were obtained.Finally, through fusion and re-learning of the initial classification result, the final classification result was obtained.Based on the measurement and analysis of the actual signals, the experimental results show that the method has higher accuracy than the single feature extraction method.The multipath fading channel has been used to simulate the outdoor propagation environment, and the method has certain generalization performance to adapt to the complex wireless channel environments.…”
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    Article
  4. 1304

    Energy-efficient chain-based data gathering applied to communicating concrete by Hang Wan, Michael David, William Derigent

    Published 2020-08-01
    “…Wireless Sensor Networks are very convenient to monitor structures or even materials, as in McBIM project (Materials communicating with the Building Information Modeling). …”
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    Article
  5. 1305

    Communication des entreprises et des institutions : un regard médiéval by Sylvie Fabre

    Published 2016-12-01
    Subjects: “…organizational communication…”
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    Article
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    Analysis for channel capacity of BPSK-based optical wireless communication system by CHEN Jun, HUANG De-xiu, YUAN Xiu-hua

    Published 2007-01-01
    Subjects: “…optical wireless communication…”
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    Article
  8. 1308

    Privacy Protection for Personal Health Device Communication and Healthcare Building Applications by Soon Seok Kim, Yong Hee Lee, Jong Mo Kim, Deok Seok Seo, Gwang Hee Kim, Yoon Seok Shin

    Published 2014-01-01
    “…This paper proposes a new method for protecting patient privacy when communicating with a gateway which collects bioinformation through using personal health devices, a type of biosensor for telemedicine, at home and in other buildings. …”
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    Article
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    A Context Aware Cooperative Communication Method in Wireless Sensor Networks by Hyunduk Kim, Chulki Kim, Jaehun Kim, Minah Seo, Seok Lee, Taikjin Lee

    Published 2015-06-01
    “…Moreover, existing cooperative communication methods, for example, CoopLEACH, waste energy because of the unilateral cooperative communication method, which does not consider the distance between the sink and cluster heads. …”
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  12. 1312

    Research on Dynamic Equalization of Optical Power for Satellite-Ground Laser Communication by Yuefeng CAI, Haifeng LIU, Bo LIU, Wei LIN

    Published 2021-06-01
    “…Aiming at the problem of light intensity scintillation caused by atmospheric turbulence at the receiver of satellite-ground laser communication will aff ect the communication quality, an optical power balance system based on gain competition was studied.The experiment verifi ed that the received power fl uctuation increased the communication bit error rate.The static output curve of the equalization system under gain competition was studied and the equalization performance of the dynamic time domain signal was tested.The experimental results showed that the system could compress the power fl uctuation range of the dynamic signal to 4 dB.…”
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    Provable security EPC information service communication scheme for EPC network by Jing-feng LI, Heng PAN, Wei-feng GUO

    Published 2013-08-01
    “…Furthermore, the ESCM has efficient computation and communication cost.…”
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    Guest editorial: Advanced signal processing for integration of radar and communication (IRC) by Bin Liao, Wei Liu, Ziyang Cheng, Tianyao Huang

    Published 2022-09-01
    “…Abstract Radar and communication are two key applications of radio technology, and they occupy a large portion of the frequency spectrum. …”
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  19. 1319

    Joint power control for untrusted relay cooperation-based confidential communication by Wen-jiang FENG, Wei-heng JIANG, Yi-na DENG, Yang YUAN

    Published 2014-11-01
    “…The scenario that multiple cell-edge mobile stations (MS) all without direct-links to the base station (BS) but have confidential messages in the uplink in the presence of untrusted relay (UR) cooperation was considered.In order to implement the secure communication between BS and multiple MS,destination-based jamming (DBJ) scheme was adopted.With the assumption that all MS had fixed transmit power,the joint UR and BS power control which aims at maximizing system sum secrecy rate was discussed.For this problem,analysis indicated that it was equivalent to joint access control and power allocation problem thus its NP-hard.Through problem relaxation,a suboptimal MS access control and alternatively power allocation algorithm was provided.This algorithm is proved to have polynomial complexity and can converge to at least a suboptimal solution for original problem.Simulation results show that compared with the benchmark algorithms,the proposed suboptimal algorithm is better in the achievable secrecy rate performance.…”
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