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4篇 您的检索式:作者名="Liujun Hu"
    题名 作者 年代 出处 被引量
1Acute toxicity of multi-walled carbon nanotubes, sodium pentachlorophenate, and their complex on earthworm Eisenia fetida显示文摘Liujun Zhang Changwei Hu Weili Wang Funian Ji Yibin Cui Mei Li 2014Ecotoxicology and Environmental Safety2014,,:1
2Adaptive Multiantenna Technology显示文摘Multiantenna technology can be implemented in several modes. These modes have varying characteristics and are used in different scenarios. This paper introduces Beamforming (BF), Cyclic Delay Diversity (CDD), Spatial Diversity (SD), Spatial Multiplexing (SM), and other multiantenna technologies. It also analyzes various technical features and their application scenarios. An adaptive multiantenna switching algorithm is proposed that chooses a suitable mode for sending data according to the scenario or wireless channel conditions. This switching algorithm improves multiantenna technology and enhances the quality of wireless network communications.Huahua Xiao Dengkui Zhu Liujun Hu 2011ZTE Communications2011,9,1:0
3Line-of-Sight MIMO for Next-Generation Microwave Transmission Systems显示文摘Line-of-sight MIMO (LoS MIMO) is not applicable in scattering wireless transmission scenarios, but it may be applied in LoS microwave transmission scenarios if antenna spacing (within transmit and/or receive arrays) is suitable and there is one hop distance. LoS MIMO can improve channel capacity and performance of a transmission system. In this paper, we discuss factors affecting channel capacity and performance in LoS MIMO. We also discuss the feasibility LoS MIMO applications.Xianwei Gong Zhifeng Yuan Jun Xu Liujun Hu 2012ZTE Communications2012,10,4:0
4Joint Transm ission Method in Coordinated Multi-Point Transm ission and Reception Systems显示文摘In this paper,we propose a multi-point joint transmission method for Coordinated Multi-Point (CoMP) systems.This solution combines space time/frequency coding and precoding with beamforming technology.The multi-path data obtained by space time/frequency coding and precoding can be mapped by beamforming technology to multiple coordinated nodes for transmission.The signal receiver can also obtain bigger diversity gain and beamforming gain as well through the combination of space time/frequency coding and beamforming.Moreover,precoding and beamforming can help the signals transmitted from separate nodes in CoMP system combine at the receiver,which makes the signals at different layers more independent and obtains beamforming gain.Sun Yunfeng diang ding Hu Liujun 2010ZTE Communications2010,8,1:0
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