OFDM光网络中软件定义的信号传输性能优化  

Signal Transmission Performance Optimizations in Software-Defined OFDM Optical Networks

作　　者：朱庆明[1] 彭继宗 苏翼凯[1] 

机构地区：[1]上海交通大学,上海200240

出　　处：《中兴通讯技术》2015年第4期6-10,共5页ZTE Technology Journal

基　　金：国家高技术研究发展("863")计划(2013AA013402;2015AA015503);国家自然科学基金(61125504)

摘　　要：针对正交频分复用(OFDM)光网络,提出两项OFDM传输性能优化技术,分别可以抑制OFDM信号的旁瓣分量和降低峰均功率比(PAPR)。通过在每个OFDM符号前插入一段软件定义的旁瓣抑制码(SSC),OFDM信号旁瓣可以得到显著抑制,从而有效降低密集波分复用-正交频分复用(DWDM-OFDM)系统中的相邻载波干扰。此外,利用软件定义的方式更改保护频带(FGB),以降低OFDM信号的PAPR,改善信号传输性能。通过实验对两项OFDM传输性能优化技术进行了验证。In this paper, we propose two techniques for optimizing transmission performance in OFDM networks. These techniques reduce the sidelobe component and PAPR of an OFDM signal. By inserting a software-defined sequence called sidelobe suppression code(SSC), the sidelobes of the OFDM signal are significantly suppressed, and the interference between adjacent channels in DWDM-OFDM systems can be reduced. Furthermore, we utilize frequency guard band(FGB) to reduce PAPR through software definition and improve transmission. Our two methods are validated by experiments.

关 键 词：正交频分复用 旁瓣抑制 峰均功率比 

分 类 号：TN929.1[电子电信—通信与信息系统]