Adaptive Chromatic Dispersion Compensation for Coherent Communication Systems Using Delay-Tap Sampling Technique

被引：28

作者：

Wang, Dawei ^{[1
,2
]}

Lu, Chao ^{[3
,4
]}

Lau, Alan Pak Tao ^{[3
,4
]}

He, Sailing ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Ctr Opt & Electromagnet Res, Dept Opt Engn, Hangzhou 310058, Zhejiang, Peoples R China

[2] Royal Inst Technol KTH, Dept Electromagnet Engn, S-10044 Stockholm, Sweden

[3] Hong Kong Polytech Univ, Photon Res Ctr, Kowloon, Hong Kong, Peoples R China

[4] Hong Kong Polytech Univ, Dept Elect & Informat Engn, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 14期

关键词：

Chromatic dispersion (CD) compensation; coherent detection; delay-tap sampling; digital signal processing (DSP); DIGITAL-FILTERS; RECEIVERS;

D O I：

10.1109/LPT.2011.2151280

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A fast and low-complexity adaptive chromatic dispersion (CD) compensation algorithm based on delay-tap sampling technique for optical coherent systems is proposed. By generating a delay-tap plot from the signal powers after an adaptive CD equalizer, a parameter can be extracted from the delay-tap plot which can be used to estimate CD accurately. Simulation results for coherent polarization-division-multiplexed (PDM) quaternary phase-shift keying (QPSK) as well as 16-quadrature amplitude modulation (QAM) systems with various pulse shapes demonstrate that high CD estimation accuracies using relatively few data symbols can be achieved in presence of other transmission impairments.

引用

页码：1016 / 1018

页数：3

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