In this paper the impact factors on the optical fiber LAN network with ring topology are considered. The couple ratio, the self-ring effect, the Multiple-Access Interference (MAI), and the channel noises are the main ...In this paper the impact factors on the optical fiber LAN network with ring topology are considered. The couple ratio, the self-ring effect, the Multiple-Access Interference (MAI), and the channel noises are the main factors degrading the system performance. We develop a systematic method that employs the smallest p multiplication method to analyze the optimization of the ring network. The results show that choosing an optimal couple ratio and power control will enhance the system performance dramatically. In addition, the “self-ring” interference and MAI can be suppressed by power control to some extent.展开更多
同步数字体系(Synchronous Digital Hierarchy,SDH)光传输具有传递速度快、传输容量大等特点,且易于构建环网提升可靠性。SDH光环网在民用通信网络和电力、铁路等专用通信网络中应用广泛,能够通过网络管理系统提供强大的操作、维护及管...同步数字体系(Synchronous Digital Hierarchy,SDH)光传输具有传递速度快、传输容量大等特点,且易于构建环网提升可靠性。SDH光环网在民用通信网络和电力、铁路等专用通信网络中应用广泛,能够通过网络管理系统提供强大的操作、维护及管理能力。随着SDH光环网在机动通信网络的推广应用,集中式的网络管理系统无法满足机动通信网络即插即用的需求。本文在深入研究SDH光环网网络管理技术的基础上,结合机动通信网络的组网需求,设计站号自动分配协议和拓扑自动发现算法,并在设备中进行了验证。结果表明,设计的方法能够大幅简化设备配置,提供网络拓扑呈现和光纤连接故障定位能力。展开更多
文摘In this paper the impact factors on the optical fiber LAN network with ring topology are considered. The couple ratio, the self-ring effect, the Multiple-Access Interference (MAI), and the channel noises are the main factors degrading the system performance. We develop a systematic method that employs the smallest p multiplication method to analyze the optimization of the ring network. The results show that choosing an optimal couple ratio and power control will enhance the system performance dramatically. In addition, the “self-ring” interference and MAI can be suppressed by power control to some extent.
文摘同步数字体系(Synchronous Digital Hierarchy,SDH)光传输具有传递速度快、传输容量大等特点,且易于构建环网提升可靠性。SDH光环网在民用通信网络和电力、铁路等专用通信网络中应用广泛,能够通过网络管理系统提供强大的操作、维护及管理能力。随着SDH光环网在机动通信网络的推广应用,集中式的网络管理系统无法满足机动通信网络即插即用的需求。本文在深入研究SDH光环网网络管理技术的基础上,结合机动通信网络的组网需求,设计站号自动分配协议和拓扑自动发现算法,并在设备中进行了验证。结果表明,设计的方法能够大幅简化设备配置,提供网络拓扑呈现和光纤连接故障定位能力。
基金Jointly Supported by the National Science Fund for Distinguished Young Scholars(60325104)the Grand Key Science and Technology Research Program of MOE(0215)the SRFDP of MOE(20040013001)
