Showing 761 - 780 results of 3,139 for search '"Wireless"', query time: 0.08s Refine Results
  1. 761

    Wired and single sideband wireless service based on a single optical modulator by Weiping LI, Miao KONG, Yanyi WANG, Jianjun YU

    Published 2020-09-01
    “…In order to provide more flexible and convenient service for users in the hybrid transmission network,a novel system using a single optical modulator to provide wired and single side band (SSB) wireless signal was proposed.By combining the application of dual-polarization binary phase shift keying modulator (DP-BPSK),phase shifter and other devices,wired and SSB wireless signals were directly generated to suppress the walk-off effect caused by dispersion,and the effective transmission of 5 Gbit/s SSB wireless signal carried on 40 GHz millimeter wave and 10 Gbit/s wired signal over 65 km single-mode fiber (SMF) were successfully achieved.The experiments show that the application of polarization multiplexing technology and optical subcarrier multiplexing technology can make the signal have a greater improvement in transmission rate and performance,and play an important role in the future broadband communication network.…”
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  2. 762

    Research on FTTR WLAN indoor wireless location algorithm based on frequency response by Zhifeng LONG, Jing ZHANG

    Published 2023-09-01
    “…Highly accurate and reliable indoor wireless positioning services have been widely used.In order to obtain good positioning accuracy, the design of positioning algorithms needs to be matched with wireless positioning facilities.fiber to the room (FTTR) is an indoor access network solution based on IEEE 802.11 ax, a new generation of wireless local area network (WLAN) standard.Compared with the existing Wi-Fi networks, FTTR has a much larger available band width.However, FTTR WLAN also lacks of a public valid data set to support localization functions, which makes the localization research based on FTTR scenarios face huge obstacles.In order to solve the above problems, firstly, a frequency response-based FTTR scene dataset generation method was proposed, which uses the existing Wi-Fi localization dataset to generate the frequency response matrix within the available band width of FTTR.Then, the parallel path principal component analysis (PCA) method was used to generate the classification matrix.And the generated dataset was trained using a fully connected neural network to improve the accuracy.The experimental results on the real measurement dataset show that the proposed localization algorithm can achieve a localization accuracy of less than 1 m, which is not only more accurate than the traditional location estimation algorithm, but also basically meets the fine-grained localization requirements for practical applications.…”
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  3. 763

    Synthesized Cluster Head Selection and Routing for Two Tier Wireless Sensor Network by Keyur Rana, Mukesh Zaveri

    Published 2013-01-01
    “…We have proposed an integrated approach of cluster head selection and routing in two tier wireless sensor network (WSN) using Genetic Algorithm based cluster head selection with A-Star algorithm based routing method to extend life of WSN. …”
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    Collaborative Cognitive Wireless Network Optimization Model and Network Parameter Optimization Algorithm by Tao Zhang

    Published 2023-01-01
    “…In recent years, the combination of cognitive radio and collaborative communication has been widely studied and applied because of its ability to increase user throughput and improve spectrum utilization in a flat-fading wireless channel environment. Such cognitive radio networks that use user collaboration to improve channel capacity and spectrum utilization are called collaborative cognitive radio networks. …”
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  8. 768

    Performance analysis of satellite-terrestrial integrated wireless network based on stochastic geometry by LI Ruiwen, SUN Yaohua, PENG Mugen

    Published 2024-04-01
    “…Satellite-terrestrial integrated wireless network (STIN) is a pivotal approach in achieving worldwide wireless connectivity. …”
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  9. 769

    Heuristic mobile data gathering for wireless sensor networks via trajectory control by Jianxin Ma, Shuo Shi, Xuemai Gu, Fanggang Wang

    Published 2020-05-01
    “…This article focuses on the problem of scheduling the optimal paths of multiple mobile elements (e.g. robots, vehicles, etc.) to minimize the travel distance and balance the energy consumption and the data gathering latency in wireless sensor networks for smart cities. To partition the network for the multiple mobile elements and compute the trajectories of the multiple mobile elements, we utilize the sensor’s communication range and construct a multiple mobile elements scheduling problem. …”
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  10. 770

    RSS Localization Algorithm Based on Nonline of Sight Identification for Wireless Sensor Network by Yan Wang, Long Cheng, Guangjie Han, Hao Wu, Bing Jiang

    Published 2014-07-01
    “…Localization is a key issue for wireless sensor network. The traditional localization methods achieve high location accuracy using received signal strength (RSS) in line of sight (LOS) environment. …”
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  11. 771

    Zigbee Wireless Sensor Networks: Performance Study in an Apartment-Based Indoor Environment by Biswajit Kumar Dash, Jun Peng

    Published 2022-01-01
    “…It shares the unlicensed 2.4 GHz Industrial, Scientific, and Medical (ISM) radio band with other wireless networks such as Wi-Fi. Usually, Zigbee and Wi-Fi networks coexist in indoor environments for their respective applications. …”
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    Interference-Aware Fault-Tolerant Energy Spanner in Wireless Ad Hoc Networks by Dong Wang, Wang-Chen Long, Xiao-Hong Li

    Published 2012-12-01
    “…Power assignment in wireless ad hoc networks is an important issue of topology control which assigns power for each wireless node so that the induced communication graph satisfies some desired properties such as the connectivity and the energy spanner. …”
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    Energy-Aware Distributed Intelligent Data Gathering Algorithm in Wireless Sensor Networks by Rongbo Zhu, Yingying Qin, Jiangqing Wang

    Published 2011-05-01
    “…To plan the data collecting path for the mobile collector in wireless sensor network (WSN), an efficient energy-aware distributed intelligent data gathering algorithm (DIDGA) is proposed, which includes cluster formation and path formation phases. …”
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