Symbol rate identification for auxiliary amplitude modulation optical signal

被引：2

作者：

Wei, Junyu ^{[1
]}

Dong, Zhi ^{[1
]}

Huang, Zhiping ^{[1
]}

Zhang, Yimeng ^{[1
]}

机构：

[1] Natl Univ Def Technol, Sch Mech Engn & Automat, Deya Rd, Changsha 410073, Hunan, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2016年 / 374卷

基金：

中国国家自然科学基金;

关键词：

Symbol rate identification; Asynchronous delay-tap sampling; Average magnitude difference function; Auxiliary amplitude modulation format; Peak to valley ratio; Optical fiber communication; NETWORKS;

D O I：

10.1016/j.optcom.2016.04.063

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we creatively propose and demonstrate a method for symbol rate identification (SRI) of auxiliary amplitude modulation (AAM) optical signal based on asynchronous delay-tap sampling (ADTS) and average magnitude difference function (AMDF). The method can accurately estimate symbol rate and has large transmission impairments tolerance. Furthermore, it can be realized in the digital signal processor (DSP) with low logical resources because of multiplication-free. In order to improve the accuracy of SRI, the peak to valley ratio (PTVR) of AMDF is introduced into our method for blind chromatic dispersion (CD) compensation. The results of the numerical simulations show that the overall maximum SRI error is smaller 0.079% for return-to-zero (RZ) on-off keying (OOK), RZ differential phase-shift keying (DPSK), RZ differential quadrature phase-shift keying (DQPSK) and RZ 16-ary quadrature amplitude modulation (QAM) with 50% duty cycles. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：84 / 91

页数：8

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