多维多阶调制格式产生方案的比较研究  

Analysis and comparison of the generation schemes for multi-dimensional and multi-level modulation formats

作　　者：汤婵娟[1] 邵宇丰[1] 迟楠[1] 方武良[1] 李欣颖[1] 

机构地区：[1]复旦大学通信科学与工程系专用集成电路与系统国家重点实验室,上海200433

出　　处：《光通信研究》2011年第6期25-27,共3页Study on Optical Communications

基　　金：国家自然科学基金资助项目(600837004);曙光学者基金和浦江人才项目资助

摘　　要：随着带宽需求的不断增长,多维多阶调制格式成为目前研究的热点。文章对8PSK(3阶相移键控)、8QAM(3阶正交调幅)和16QAM(4阶正交调幅)的实现方式从原理和拓扑结构上进行了综合性的比较研究。使用已商用的调制器件,通过串行或串并混合的结构配置,可以得到8PSK、8QAM和16QAM的调制光信号;而使用并行结构的配置方式,可以提高系统的集成度和信号的传输性能,但往往需要多个并行配置调制的新结构,对系统集成的成本和工艺提出了苛刻的要求。With the continuously growing demand for optical network bandwidths,multi-dimensional and multi-level modulation formats,such as 8PSK,8QAM,16QAM,have become a current focal point of research.In this paper,we make a comprehensive comparative analysis of the principles and topologies for the realization of these formats and obtain 8PSK,8QAM and 16QAM modulated optical signals by using commercially available modulation devices configured in a serial or hybrid structure.We can improve the system integration level and signal transmission performances by using configuration in a parallel structure,but it often needs multiple parallel structures,which raises harsh requirements on the cost and processes for system integration.

关 键 词：光通信 多维多阶调制格式 相移键控 正交调幅 

分 类 号：TN911.3[电子电信—通信与信息系统]