1. Southern Coastal Optical Cable Engineering Project. The cable was completed and put into operation in 1992, and has a total length of 2,800km, starting from Nanjing in the north, via Shanghai, Hangzhou, Fuzhou, Xia...1. Southern Coastal Optical Cable Engineering Project. The cable was completed and put into operation in 1992, and has a total length of 2,800km, starting from Nanjing in the north, via Shanghai, Hangzhou, Fuzhou, Xiamen, Huizhou, leading to Guangzhou in the south, covering Jiangsu, Shanghai, Zhejiang, Fujian and Guangdong. The whole line has展开更多
It is necessary to study dynamic operation efficiency of transmission networks in order to realize high intensification of communication networks. The operation efficiency discussed here should exist not only in logic...It is necessary to study dynamic operation efficiency of transmission networks in order to realize high intensification of communication networks. The operation efficiency discussed here should exist not only in logic-circuit layer, but also in both path layer and medium layer. A theoretical method of the measurement of layers and comprehensive evaluations is presented based on the concept of transmission efficiency.展开更多
随着数字经济的发展,有线数字电视大幅提升了高清晰度和个性化服务水平。光纤到户(Fibre To The Home,FTTH)技术因其高数据传输速率和大容量特点,成为升级有线电视服务的决定性技术。对此,分析传统的数字电视入户方式,并提出一种基于“...随着数字经济的发展,有线数字电视大幅提升了高清晰度和个性化服务水平。光纤到户(Fibre To The Home,FTTH)技术因其高数据传输速率和大容量特点,成为升级有线电视服务的决定性技术。对此,分析传统的数字电视入户方式,并提出一种基于“双纤三波”的FTTH网络设计方案。改进方案包括调整硬件配置、优化光学参数等内容,并运用分光系统等技术以实现高效、稳定且清晰的信号传输,满足用户对高质量多媒体服务的需求。展开更多
文摘1. Southern Coastal Optical Cable Engineering Project. The cable was completed and put into operation in 1992, and has a total length of 2,800km, starting from Nanjing in the north, via Shanghai, Hangzhou, Fuzhou, Xiamen, Huizhou, leading to Guangzhou in the south, covering Jiangsu, Shanghai, Zhejiang, Fujian and Guangdong. The whole line has
文摘It is necessary to study dynamic operation efficiency of transmission networks in order to realize high intensification of communication networks. The operation efficiency discussed here should exist not only in logic-circuit layer, but also in both path layer and medium layer. A theoretical method of the measurement of layers and comprehensive evaluations is presented based on the concept of transmission efficiency.
文摘随着数字经济的发展,有线数字电视大幅提升了高清晰度和个性化服务水平。光纤到户(Fibre To The Home,FTTH)技术因其高数据传输速率和大容量特点,成为升级有线电视服务的决定性技术。对此,分析传统的数字电视入户方式,并提出一种基于“双纤三波”的FTTH网络设计方案。改进方案包括调整硬件配置、优化光学参数等内容,并运用分光系统等技术以实现高效、稳定且清晰的信号传输,满足用户对高质量多媒体服务的需求。