Low-resolution optical transmission using joint shaping technique of signal probability and quantization noise

被引：6
|
作者：
Huang, Hongyu [1 ]
Yu, Zhenming [1 ]
Shu, Liang [1 ]
Sun, Kaixuan [1 ]
Yin, Feifei [1 ]
Xu, Kun [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2023年 / 21卷 / 05期
基金：
中国国家自然科学基金;
关键词：
optical fiber communication; quantization; digital signal processing;
D O I：
10.3788/COL202321.050602
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we propose and experimentally demonstrate a joint shaping technique to improve the performance of a low -resolution transmission system for the first time, to the best of our knowledge. The joint shaping technique combines probabilistic shaping (PS) and error feedback noise shaping (EFNS). In the 40-Gbaud intensity-modulation direct-detection (IM/DD) experimental transmission system, a bit-error-rate (BER) of 3.8 x 10-3 can be achieved easily with the joint shaping at the physical number of bits (PNOB) of 3. In the 30-Gbaud dual polarization (DP) coherent experimental transmission system, a BER below 1 x 10-3 is easily obtained with a 3-bit quantizer by using joint shaping. The optimization of the shaping degree is also analyzed.
引用
收藏
页数：7
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