Graph based signal processing for optical networks

该博士项目将探索使用基于图形的信号处理来设计未来的光网络，其中IP路由是对基础物理层的认知。该项目将包括理论和仿真，要求学生创建一个高度灵活的仿真框架来分析光网络中的NP完全路由问题。由此产生的模拟器将利用物理层的知识（光纤参数，光放大器特性以及收发器特性），使路由使用空间和波长域的组合。该模拟器将结合真实光网络的异质性（例如，网络流并不总是对称的，而且流量矩阵通常偏向于几个关键节点，例如英国网络中的国际互联网交换），以定义未来骨干光网络的最佳网络架构。

The PhD project will explore using graph based signal processing for the designof future optical networks, where IP routing is cognisant of the underpinning physicallayer. The project will include both theory and simulation with the student required tocreate a highly flexible simulation framework to analyse the NP complete problem ofrouting in optical networks. The resulting simulator will utilise knowledge of thephysical layer (fibre parameters, optical amplifier characteristics as well as thetransceiver characteristics) to enable routing using a combination of space andwavelength domains. The simulator will incorporate the heterogenous nature of realoptical networks (e.g. network flows are not always symmetric and also the traffic matrixis often weighted towards a few key nodes, such as the international internet exchanges inthe UK network), to define the optimal network architecture for future backbone opticalnetworks.