Blind Joint Polarization Demultiplexing and IQ Imbalance Compensation for M-QAM Coherent Optical Communications

被引：7

作者：

Lagha, Marwa Kazdoghli ^{[1
]}

Gerzaguet, Robin ^{[1
]}

Bramerie, Laurent ^{[2
]}

Gay, Mathilde ^{[2
]}

Chares, Marie-Laure ^{[2
]}

Peucheret, Christophe ^{[2
]}

Scalart, Pascal ^{[1
]}

机构：

[1] Univ Rennes, CNRS, IRISA, F-22305 Lannion, France

[2] Univ Rennes, CNRS, FOTON, UMR 6082, F-22305 Lannion, France

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2020年 / 38卷 / 16期

关键词：

BER; CMA; EVM; IQ imbalance compensation; joint algorithm; MSE; optical communications; polarization demultiplexing; I/Q IMBALANCE; EQUALIZATION; QPSK;

D O I：

10.1109/JLT.2020.2986601

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 novel joint polarization demultiplexing and IQ imbalance compensation scheme for coherent optical communications that uses global update is proposed and analyzed through numerical simulations. We describe the system model and derive its related equations. Next, we formulate our blind M-QAM arbitrary approach based on EASI algorithm and using the second order statistics of the observed signals. A comparison of the proposed joint method with the traditional CMA for polarization demultiplexing followed by BASS for IQ imbalance compensation is also reported. Evaluated metrics (EVM, MSE, BER) demonstrate its effectiveness compared with CMA cascaded with BASS algorithm.

引用

页码：4213 / 4220

页数：8

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