Showing 61 - 80 results of 253 for search '"millimeter wave"', query time: 0.06s Refine Results
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    Theoretical and Experimental Study on Echo Fluctuation Suppression of a Cirrus Cloud by Millimeter Wave MIMO Radar by Jinhu Wang, Junxiang Ge, Ming Wei, Hongbin Chen, Zexin Yang, Yushu Ren, Qilin Zhang, Hao Chen

    Published 2019-01-01
    “…The scattering properties of ice particles were approximately computed by Rayleigh approximation because the sizes of the ice particles are smaller than the wavelength of millimeter wave radar. Based on the above assumption, the echo fluctuation of moving particles was analyzed by computing the total backscattering field of a cirrus cloud using the classical vector potential technique. …”
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  3. 63

    Design of full-connected hybrid precoding based on an equivalent channel in millimeter-wave massive MIMO system by Haiyan CAO, Zhiyao MA, Yingjuan ZHI, Renqing LIU, Fangmin XU, Xin FANG

    Published 2021-01-01
    “…In order to improve the performance of hybrid precoding scheme based on fully connected structure in millimeter-wave massive MIMO system, a hybrid precoding scheme based on an equivalent channel with two-step design method was proposed.Firstly, the equivalent channel was constructed by combining the analog precoding matrix at the transmitter, the analog combining matrix and the channel matrix at the receiver, and the analog part of the transceiver was designed to maximize the equivalent channel gain.Furthermore, the least squares criterion was applied to derive the digital precoding matrix and the digital combination matrix column by column to design the digital part of the transceiver.Simulation results show that the proposed algorithm can approximate the optimal digital precoding scheme and has lower complexity and stronger fault tolerance.…”
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  4. 64

    Substrate Integrated Waveguide on Glass with Vacuum-Filled Tin Through Glass Vias for Millimeter-Wave Applications by Seung-Han Chung, Ho-Sun Yeom, Che-Heung Kim, Yong-Kweon Kim, Seung-Ki Lee, Chang-Wook Baek, Jae-Hyoung Park

    Published 2024-12-01
    “…These results highlight the potential of glass substrates with tin TGVs for fabricating millimeter-wave devices.…”
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  5. 65

    A Millimeter-Wave Antipodal Linearly Tapered Slot Antenna Array for 5G Wireless Communication by C. Ni, W. W. Wang, Y. C. Zheng, J. Ding, K. Cao, B. Liu

    Published 2023-01-01
    “…The measured results agree well with the simulated data which demonstrates the feasibility of the proposed SICL-based ALTSA scheme in the potential 5 G·millimeter-wave (mmWave) applications.…”
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    Application of Temperature-Dependent Fluorescent Dyes to the Measurement of Millimeter Wave Absorption in Water Applied to Biomedical Experiments by Nataliia Kuzkova, Oleksandr Popenko, Andrey Yakunov

    Published 2014-01-01
    “…Temperature sensitivity of the fluorescence intensity of the organic dyes solutions was used for noncontact measurement of the electromagnetic millimeter wave absorption in water. By using two different dyes with opposite temperature effects, local temperature increase in the capillary that is placed inside a rectangular waveguide in which millimeter waves propagate was defined. …”
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    Automatic Calibration Using a Modified Genetic Algorithm for Millimeter-Wave Antenna Modules in MIMO Systems by Cheng-Nan Hu, Philip Lo, Chien-Peng Ho, Dau-Chyrh Chang

    Published 2020-01-01
    “…This study proposes a method for designing and calibrating a millimeter-wave (mm-wave) multiple-input multiple-output (MIMO) antenna module. …”
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  11. 71

    Low-power transmission method for uplink millimeter-wave massive MIMO-NOMA system based on GSIC by Hui WANG, Qixin TAI, Liu LIU, Hong WANG, Rongfang SONG

    Published 2023-01-01
    “…The combination of non-orthogonal multiple access (NOMA) and millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) can meet the requirements for huge throughput and massive connectivity in future wireless communication network.The total system power minimization for uplink mmWave massive MIMO-NOMA was studied, and a novel framework for a hybrid beamforming mmWave massive MIMO-NOMA uplink transmission system was proposed based on group-level successive interference cancellation (GSIC).Specifically, users were grouped according to channel gain, intergroup users being served by NOMA and intra group users being served by space division multiple access.By designing analog beamforming matrices for different groups and performing joint optimization for digital beamforming and power control, a parallel iterative algorithm was proposed to solve the optimization problem.Simulation results show that the proposed method outperforms the conventional mmWave massive MIMO-NOMA based on clustering and user-level SIC in terms of total power consumption.…”
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    Millimeter-Wave Microstrip Antenna Array Design and an Adaptive Algorithm for Future 5G Wireless Communication Systems by Cheng-Nan Hu, Dau-Chyrh Chang, Chung-Hang Yu, Tsai-Wen Hsaio, Der-Phone Lin

    Published 2016-01-01
    “…This paper presents a high gain millimeter-wave (mmW) low-temperature cofired ceramic (LTCC) microstrip antenna array with a compact, simple, and low-profile structure. …”
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    Experiment on a full-duplex OFDM radio-over-fiber system with 60GHz optical millimeter wave by DONG Ze1, CAO Zi-zheng1, CHEN Lin1, YU Jian-jun1

    Published 2011-01-01
    “…An integrated full-duplex radio-over-fiber system with 60GHz wireless OFDM mm-wave transmission by using external modulation was proposed and experimentally demonstrated.The experimental results show that the 58GHz optical millimeter-wave will be generated by 29GHz RF resource.2.5Gbit/s OFDM downstream signal are modulated on the 58GHz optical millimeter-wave.The modulated signal can be transmitted over 20km fiber,and 3.3m wireless distance can be realized simultaneously.2.5Gbit/s OOK-NRZ upstream data signals are modulated on the reused central wavelength and transmitted over 20km fiber to the central station.…”
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    60 GHz Modular Antenna Array Link Budget Estimation with WiGig Baseband and Millimeter-Wave Specific Attenuation by Joongheon Kim, Liang Xian, Ali S. Sadri

    Published 2017-01-01
    “…Based on the practical link budget analysis results, we can estimate fundamental limits in terms of achievable data rates over 60 GHz millimeter-wave wireless links.…”
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    Pencil Beam Planar Ka-Band Antenna Array Using Waveguide Displaced Radiators Sections for Millimeter Wave Applications by Hany S. Hussein, Mohamed Ismeil, M. S. Yasseen, Yuri E. Sedelnikov, Mohamed N. Shaaban

    Published 2025-01-01
    “…This study presents the design and analysis of a wideband planar Ka-band antenna array for millimeter-wave 5G wireless systems, radar, and satellite communication systems. …”
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