Four-dimensional modulation formats with coherent detection for spectrally efficient fiber-optic communication systems

具有相干检测功能的四维调制格式，适用于光谱高效的光纤通信系统

• 批准号: 185737975
• 负责人: Professor Dr.-Ing. Hans-Joachim Grallert
• 金额: --
• 依托单位: Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut (HHI)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/185737975?language=en
• 关键词: Four; dimensional; modulation; formats; coherent

Four-dimensional (4D) coded modulation is a promising technique to approach the potential capacity of fiber optic channels and thus offers a way to satisfy the ever growing need for higher transmitted bit rates in the optical backbone networks. Within the project, 4D coded modulation schemes are to be developed and demonstrated experimentally. In particular, two schemes will be investigated:(1) 4D m-ary set partitioning quadrature amplitude modulation (mSP-QAM) in conjunction with 4D turbo codes,(2) 4D Trellis coded modulation.Four-dimensional mSP-QAM constellations are derived from conventional polarization-division multiplexed (PDM) QAM constellations by applying Ungerböcks set partitioning scheme in four dimensions and thus increasing the noise tolerance. For example, 128SP-QAM can be derived from PDM-16QAM by applying 4D set partitioning once.Similarly, 4D Trellis coded modulation applies Trellis coded modulation to four-dimensional constellations instead of using two-dimensional ones. The goal of the project is to show that these techniques can be applied to significantly increase the spectral efficiency times reach product compared to state-of-the-art systems. To that end, the benefits brought by 4D coded modulation will not only be quantified in numerical simulations but also be demonstrated in laboratory experiments.

四维（4D）编码调制是一种很有前途的技术，可以接近光纤信道的潜在容量，从而提供了一种方法来满足光骨干网中日益增长的对更高传输比特率的需求。在该项目中，4D编码调制方案将被开发和实验证明。特别地，将研究两种方案：（1）结合4D Turbo码的4D m-ary set partitioning quadrature amplitude modulation（mSP-QAM），（2）4D Trellis编码调制。例如，128 SP-QAM可以通过应用4D集合划分一次而从PDM-16 QAM导出。类似地，4D网格编码调制将网格编码调制应用于四维星座而不是使用二维星座。 该项目的目标是表明，与最先进的系统相比，这些技术可以应用于显着增加频谱效率时间。为此，4D编码调制带来的好处不仅将在数值模拟中量化，而且还将在实验室实验中得到证明。

项目成果

Transmission Performance of 4D 128SP-QAM With Forward Error Correction Coding

具有前向纠错编码的 4D 128SP-QAM 传输性能

• DOI: 10.1109/lpt.2015.2391078
• 发表时间: 2015
• 期刊: IEEE Photonics Technology Letters
• 影响因子: 2.6
• 作者: S. Alreesh;C. Schmidt-Langhorst;F. Frey;P. W. Berenguer;C. Schubert;J. K. Fischer
• 通讯作者: J. K. Fischer

Bandwidth-Variable Transceivers based on Four-Dimensional Modulation Formats

• DOI: 10.1109/jlt.2014.2319244
• 发表时间: 2014-04
• 期刊: Journal of Lightwave Technology
• 影响因子: 4.7
• 作者: J. Fischer;S. Alreesh;R. Elschner;F. Frey;M. Nolle;C. Schmidt-Langhorst;C. Schubert

Experimental investigation of a four-dimensional 256-ary lattice-based modulation format

• DOI: 10.1364/ofc.2015.w4k.3
• 发表时间: 2015-03
• 期刊: 2015 Optical Fiber Communications Conference and Exhibition (OFC)
• 作者: T. Eriksson;S. Alreesh;C. Schmidt-Langhorst;F. Frey;P. W. Berenguer;C. Schubert;J. Fischer;P. Andrekson;M. Karlsson;E. Agrell