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基于网络控制的无线投影系统的实现路径
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作者 孙志勇 《微型电脑应用》 2020年第11期48-50,54,共4页
研究了基于网络控制的无线投影系统的实现路径,阐述了无线投影网关软硬件的规划路径,根据TCP/IP协议综合运用ARM嵌入式系统及无线通信及监控等技术完成了一个多用户无线投影控制系统的设计。详细介绍了无线投影网关及管理软件的实现路径... 研究了基于网络控制的无线投影系统的实现路径,阐述了无线投影网关软硬件的规划路径,根据TCP/IP协议综合运用ARM嵌入式系统及无线通信及监控等技术完成了一个多用户无线投影控制系统的设计。详细介绍了无线投影网关及管理软件的实现路径,该系统适用于PC端及手机Android平台,用户端采用WiFi通信技术同无线投影网关建立通信过程,使无线投影功能得以有效实现。多个用户和平台可共同使用无线投影功能,切换方式为一主多从。实验测试结果证明了该系统无线投影功能的可行性。 展开更多
关键词 无线投影系统 网络控制 无线局域网 实现路径
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富可视开创无线投影新纪元富可视
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《信息系统工程》 2003年第11期44-44,共1页
关键词 富可视公司 无线投影系统 INFOCUS LiteShow 即插即演 系统识别保护系统
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Polarization Projection for 3D Geometry-Based Stochastic Channel Model
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作者 PANG Lihua ZHANG Yang +5 位作者 GONG Fengkui WANG Anyi XIAO Liyuan LIANG Xiao WANG Qiaofeng LI Jiandong 《China Communications》 SCIE CSCD 2015年第10期52-63,共12页
Comprehensive radiation characteristics of polarized antenna are crucial in creating practical channel coefficients for next generation wireless communication system designs.Being currently supported within3 D geometr... Comprehensive radiation characteristics of polarized antenna are crucial in creating practical channel coefficients for next generation wireless communication system designs.Being currently supported within3 D geometry-based stochastic channel models(GSCM),field patterns are technically obtained by chamber measurement(or by its best fitting).However,in some channel related performance analysis scenarios,design insight can be crystallized better by starting the derivations with theoretical co-polarization and cross-polarization components.Specifically,these two components are mathematically linked with field patterns through the proposed polarization projection algorithm.In this manuscript,we focus on revealing the transformation criterion of polarization states between the antenna plane and the propagation plane.In practice,it makes retrieving the field patterns by electromagnetic computation possible.Meanwhile,the impact imposed by distinct antenna orientations is geometrically illustrated and consequently incorporated into the proposed algorithm.This will further facilitate flexible performance evaluation of related radio transmission technologies.Our conclusions are verified by the closed-form expression of the dipole field pattern(via an analytical approach) and by chamber measurement results.Moreover,we find that its 2D degenerative case is aligned with the definitions in 3^(rd) generation partnership project(3GPP)technical report 25.996.The most obvious benefit of the proposed algorithm is to significantly reduce the cost on generating channel coefficients in GSCM simulation. 展开更多
关键词 polarization 3D geometry-based stochastic channel model antenna orientation radiation characteristics dipole chamber measurement channel simulation
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