下一代无源光网络相位噪声机理及抑制方法研究

项目名称： 下一代无源光网络相位噪声机理及抑制方法研究

项目编号： No.61275005

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 杨川川

作者单位： 北京大学

项目金额： 80万元

中文摘要： 在研项目主要进展为：创新性地提出了更加高效的抑制相干光正交频分复用系统激光器相位噪声的方法，性能已经大大超越了已有的导频或数据辅助、最大似然的相位噪声抑制方法，并进而建立了相干光块传输系统普适的激光器相位噪声建模、分析及抑制理论框架，甚至当使用的激光器线宽达2MHz，提出的方法仍能高效抑制激光器相位噪声。以上工作发表在IEEE Photonics Technology Letters, Optics Express等国际著名学术期刊和会议上，获得同领域如IEEE Fellow D. V. Plant领导的研究组等多个知名研究机构的积极评价。下一步，信道非线性和激光器所致的相位噪声已经成为恶化无源光网络（PON）系统性能的主要效应，缺乏建模理论和抑制方法成为了下一代PON发展中急待解决的关键问题，本项目将研究下一代PON中信道非线性效应及激光器联合导致相位噪声的机理及其抑制方法。

中文关键词： 无源光网络；正交频分复用接入；相位噪声；；

英文摘要： The main research achievement of the undergoing National Natural Science Foundation project includes: 1) more effective laser phase noise suppression methods are proposed for coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems, whose performance are much better than the existing pilot-aided/data-aided and maximum likelihood phase noise suppression methods. 2) According to the laser phase noise estimation and suppression of discrete cosine basis based CO-OFDM systems, it is the first time that effective schemes are proposed. 3) A unified laser phase noise modeling, analysis and mitigation framework which is effective for any coherent optical block transmission systems is proposed. Even when the laser linewidth achieves 2MHz, the proposed method can also mitigate the laser phase noise effectively. The results above have been published on several well-known journals or conferences e.g. IEEE Photonics Technology Letters, Optics Express and received positive recognitions from many well-known research institutes in this area e.g. the research group headed by IEEE Fellow David V. Plant. For the work next step, it is well-known that phase noise induced by both fiber channel nonlinearity and laser is the key factor to deteriorate the performance of passive optical network (PON). The correspondin

英文关键词： passive optical network；OFDMA；phase noise；；