下一代光接入网络物理层关键技术综述

Survey of physical layer key technologies for next generation optical access network

为满足未来用户持续增长的带宽需求,从大容量光接入网络的物理层关键技术出发,总结了下一代无源光网络(NG-PON)标准化现状,综述分析了物理层先进的调制格式、功率预算提升技术、物理层损伤及其抑制损伤的先进数字信号处理(DSP)算法。此外,对未来NG-PON物理层的研究方向进行了展望。

In order to meet the increasing bandwidth demand of users in the future,starting from the key technology of physical layer of high-capacity optical access network,this paper summarizes the standardization status of the next generation passive optical network(NG-PON),reviews the advanced modulation formats in the physical layer,the enhanced power budget technology,the physical layer impairment and suppression based on the advanced digital signal processing(DSP)algorithms.In addition,the future reseach directions of NG-PON physical layer is prospected.