基于能量与信息共传的动态自适应光接入系统研究

The dynamic adaptive optical access system can realize flexible resource assignment and bit stream allocation according to the service requirement, which becomes a hot research area in future optical access network. The dynamic resource assignment and adaptive bit allocation are the key issues. The dynamic resource management needs to consider the jointly optimal control of carriers, bit stream, constellation mapping and so on; the optical distribution network needs to realize the spectrum allocation based on passive structure; the frequent service changing and user interaction need adaptive allocation and recognize mechanism to realize data stream assignment at physical layer and relieve the pressure on high-layers. Bases on the programmable multi-parametric control mechanism, this application will research the model of dynamic adaptive optical access system, analyze the collaborative scheduling among these parameters and realize the resource optimization matching; we will propose the method of optical distribution node with energy and data synchronized transmission, including the low noise compensation of signal loss and mechanism of dynamic allocation; we will also study the method of adaptive bit allocation and reorganization based on constellation mapping and cluster analysis, and build the experiment of dynamic adaptive optical access system. The research results have theoretical and practical significance for the development of next generation dynamic and intelligent fiber access network.

动态自适应光接入系统可能够根据业务需求实现弹性的资源调度与灵活的比特流分配，是未来光接入网的热点研究领域，全网动态资源调度和自适应比特分配是其关键问题。动态的资源管控需要协同考虑载波、比特流、星座分布等多个参量的优化控制；光分配网需要在保持无源特性下实现频谱动态配置；接入系统频繁的业务切换和用户交互需要自适应分配与识别机制来实现物理层的数据流分配，缓解上层压力。 本申请将基于可编程多参量管控机制，研究动态自适应光接入系统模型，综合分析多参量的调度协同，实现资源优化匹配；提出能量与信息共传的光纤分配节点构造方法，包括信号的低噪损耗补偿与动态分配的机理；研究基于星座排布和聚类分析的自适应比特分配与识别方法，搭建动态自适应光接入实验系统。研究成果可为发展下一代动态、智能的光纤接入网提供参考，具有一定理论意义与实用价值。

动态自适应光接入能够实现接入资源的灵活调度与业务流分配，是光接入网从灵活化向动态、智能化发展的重要手段。项目围绕动态自适应光接入系统的网络模型、关键技术以及数字信号处理算法等方面开展了一系列理论性和探索性研究工作。项目组建立了基于广义频分复用的多参量光接入系统模型，分析了能量与信息在光纤中的作用机制，提出了包括动态矩阵删余、多业务带宽分配、动态路由和频谱分配等多种动态资源业务分配方案和算法，建立了动态自适应光接入实验系统，对所提出的模型和研究方案进行了验证。项目的研究可促进下一代智能光接入网中相应理论和技术的发展，研究成果可为我国光纤通信系统的发展提供参考。