一种基于具有蜂窝状决策区域的星座设计的概率整形星型-CAP-16/32调制。

A probabilistically shaped star-CAP-16/32 modulation based on constellation design with honeycomb-like decision regions.

作者信息

Ren Jianxin, Liu Bo, Xu Xing, Zhang Lijia, Mao Yaya, Wu Xiangyu, Zhang Ying, Jiang Lei, Xin Xiangjun

出版信息

Opt Express. 2019 Feb 4;27(3):2732-2746. doi: 10.1364/OE.27.002732.

DOI:10.1364/OE.27.002732

Abstract

A novel, probabilistically shaped star-CAP-16/32 modulation based on constellation design with honeycomb-like decision regions is proposed in this paper. The proper geometric structural design of the star constellation, along with the probabilistic shaping, is able to achieve better improvement with regards to constellation figure of merit (CFM) and bit error rate (BER) performance. A 25-km standard single-mode fiber (SSMF) data transmission employing the proposed PS star-CAP modulation scheme is successfully demonstrated. Experiment results show that the proposed PS star-CAP-16 in excels the traditional PS star-CAP-16 in by 1.5 dB in receiver sensitivity at the BER of . At the same time, the novel PS star-CAP-32 with entropy of 4.4 bits/symbol defeats the uniform star-CAP-32 by 1.6 dB improvement under the same bit rate.

摘要

本文提出了一种基于星座设计的新型概率整形星型CAP-16/32调制，其具有类似蜂窝的判决区域。星型星座的适当几何结构设计以及概率整形，能够在星座品质因数（CFM）和误码率（BER）性能方面实现更好的提升。成功演示了采用所提出的概率整形（PS）星型CAP调制方案的25公里标准单模光纤（SSMF）数据传输。实验结果表明，所提出的PS星型CAP-16在误码率为时，接收灵敏度比传统的PS星型CAP-16高出1.5 dB。同时，熵为4.4比特/符号的新型PS星型CAP-32在相同比特率下比均匀星型CAP-32的性能提升了1.6 dB。