基于超Nyquist在光通信系统中传输方案的分析  

Analysis of a faster-than-Nyquist signaling-based transmission scheme for optical communication systems

作　　者：王演祎 王智鑫[1] 张俊文[1] 杨超[1] 迟楠[1] 

机构地区：[1]复旦大学信息科学与工程学院通信科学与工程系,上海200433

出　　处：《光通信研究》2015年第3期1-4,共4页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61177071);国家"八六三"计划资助项目(2013AA013603);上海市科委重点项目(12dz1143000)

摘　　要：基于FTN(超Nyquist)方案是一种高频谱效率传输方案。文章总结了目前国际上最新的基于FTN传输方案:级联多模盲均衡FTN、数字FTN和SOFTN(软输出FTN)。其中,级联多模盲均衡FTN方案能有效地抑制噪声和信道间串扰,数字FTN方案能有效地简化系统结构,而SOFTN方案的频谱效率最高。对这三种方案的性能和原理进行了详细分析和比较,以期作为未来长距离、大容量光纤通信系统设计的依据。The Faster-Than-Nyquist （FTN） signaling-based scheme is a high spectral efficiency transmission scheme for large- capacity optical communication systems. This paper reviews the latest FTN signaling-based transmission schemes in the world, such as cascaded multi-modulus blind equalization FTN, digital FTN and Soft Output FTN （SOFTN）. The cascaded multi- modulus blind equalization FTN can effectively suppress noise and inter-channel crosstalk, the digital FTN can effectively sim- plify the system structure and the SOFTN has the highest spectral efficiency. It analyzes and compares in detail their perform- ances and principles, which can be used as the basis for the design of future long-range large-capacity fiber-optic communication systems.

关 键 词：超Nyquist信令 频谱效率 数字超Nyquist 软输出超Nyquist 

分 类 号：TN911[电子电信—通信与信息系统]