Four-Dimensional Trellis Coded Modulation for Flexible Optical Communications

被引：10

作者：

Alreesh, Saleem ^{[1
,2
]}

Schmidt-Langhorst, Carsten ^{[2
]}

Emmerich, Robert ^{[2
]}

Berenguer, Pablo Wilke ^{[2
]}

Schubert, Colja ^{[2
]}

Fischer, Johannes Karl ^{[2
]}

机构：

[1] Tech Univ Berlin, Fachgebiet Nachrichtentech, D-10623 Berlin, Germany

[2] Heinrich Hertz Inst Nachrichtentech Berlin GmbH, Fraunhofer Inst Telecommun, Dept Photon Networks & Syst, D-10587 Berlin, Germany

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2017年 / 35卷 / 02期

关键词：

Digital signal processing; forward error correction; optical fiber communication; partitioning algorithms; quadrature amplitude modulation; turbo codes;

D O I：

10.1109/JLT.2016.2632305

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：

We experimentally investigate four-dimensional (4-D) Trellis coded modulation (TCM) based on polarization-division multiplexed (PDM) 16-ary quadrature amplitude modulation (QAM), PDM-32QAM, and PDM-64QAM formats. A multirate optical transponder is enabled by only a single-encoder/decoder structure. The scheme is resilient to cycle-slip events due to its 90 degrees phase rotation invariant property. In addition, the performance of 4-D turboTCM(TTCM) is investigated. The superior performance of TTCM over TCMis experimentally validated. Furthermore, the performance of 4-DTCM/TTCMis comparedwith standard PDM-mQAM formats combined with the soft-decision (SD) forward error correction (FEC) codes. It is shown that 4-DTCM-concatenated with a low-complexity hard-decision FEC could be an interesting candidate for complexity-performance tradeoff with SD-FEC.

引用

页码：152 / 158

页数：7

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