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基于三网融合平台的多媒体无线分播技术的研究与开发
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作者 高杨 刘骏 +3 位作者 常江 李厦 郑文涛 胡立勤 《广播与电视技术》 2014年第12期38-43,共6页
本文首先介绍了地面数字电视、移动通信及Wi-Fi的相关技术,接下来对基于三网融合平台的多媒体无线分播技术进行了深入的研究,并对其具体实施方案进行了详尽的阐述,最后给出了该平台在公共交通系统上的成功应用案例,实现了无线广播业务... 本文首先介绍了地面数字电视、移动通信及Wi-Fi的相关技术,接下来对基于三网融合平台的多媒体无线分播技术进行了深入的研究,并对其具体实施方案进行了详尽的阐述,最后给出了该平台在公共交通系统上的成功应用案例,实现了无线广播业务与互联网络、电信网络的深度融合。 展开更多
关键词 三网融合 地面数字电视 移动通信 无线分播
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Performance analysis of wireless local area networks(WLAN) in a coal-mine tunnel environment
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作者 ZHU Changping DENG Xingsong +4 位作者 ZHU Jia LI Lei ZENG Xiaoyang YU Hongzhen ZHANG Shen 《Mining Science and Technology》 EI CAS 2010年第4期629-634,共6页
In order to establish an effective wireless communication system in an underground coal-mine environment, the propagation of radio waves through a rectangular-like mine tunnel was investigated by jointly, considering ... In order to establish an effective wireless communication system in an underground coal-mine environment, the propagation of radio waves through a rectangular-like mine tunnel was investigated by jointly, considering both the dielectric constant and the reflectance of a mine tunnel. By combining free space and modified waveguide propagation models, we propose a new hybrid propagation model based on ray tracing. Simulation results have shown the effectiveness of establishing a wireless Local Area Network (LAN) in this coal-mine environment. The results of this research will be very useful as a guide in the design and development of tunnel wireless LAN systems. 展开更多
关键词 mine tunnel hybrid propagation model wireless LAN
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