摘要
光通信中如何提高传输速率和光谱效率已成为目前研究的热点,采用先进的调制格式是实现上述要求的关键途径,其中正交调制格式就是方法之一。文章介绍了一种研究计算多维多阶正交调制信号误码率的方法,首次推导出了多阶相位调制信号的解析表达式以及基于这种计算方法的仿真结果,并讨论了消光比等参数对误码率的影响。
At present,improving transmission rate and spectral density has become a hotspot in optical communication research.To use advanced modulation formats is the key for achieving these two aims and quadrature modulation format is one of them.This article presents a study method for calculating the BER of multi-dimensional and multi-level quadrature modulation signals and derives for the first time the analytical expression for multi-level phase-modulated signals and the simulation results by this method.In addition,it discusses the effects of such parameters as extinction ratio on BER.
出处
《光通信研究》
北大核心
2010年第5期11-13,32,共4页
Study on Optical Communications
关键词
正交调制
误码率
线宽
消光比
quadrature modulation
BER
linewidth
extinction ratio
作者简介
作者简介:张宁(1986-),女,内蒙古赤峰人,满族,硕士研究生,主要研究方向为光通信技术。