.png){kind=icon}
返回
Introducing 4D Geometric Shell Shaping for Mitigating Nonlinear Interference Noise
.png){kind=icon}
OA
AI
DOI：10.1109/JLT.2022.3220402.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Four dimensional geometric shell shaping (4D-GSS) is introduced as an approach for closing the nonlinearity-caused shaping gap. This format is designed at the spectral efficiency of 8 b/4D-sym and is compared against polarization-multiplexed 16QAM (PM-16QAM) and probabilistically shaped PM-16QAM (PS-PM-16QAM) in a 400ZR-compatible transmission setup with high amount of nonlinearities. Reach increase and nonlinearity tolerance are evaluated in terms of achievable information rates and post-FEC bit-error rate. Numerical simulations for a single-span, single-channel show that 4D-GSS achieves increased nonlinear tolerance and reach increase against PM-16QAM and PS-PM-16QAM when optimized for bit-metric decoding (R-BMD). In terms of R-BMD, gains are small with a reach increase of 1.7% compared to PM-16QAM. When optimizing for mutual information, a larger reach increase of 3% is achieved compared to PM-16QAM. Moreover, the introduced GSS scheme provides a scalable framework for designing well-structured 4D modulation formats with low complexity.
Keyword:
Optimization
Modulation
Complexity theory
AWGN channels
Probabilistic logic
Optical fiber polarization
Symbols
Constellation shaping
geometric shaping
four-dimensional constellations
probabilistic shaping
nonlinear fiber channel
期刊
IF:
4.8
论文数:
1.7W
被引数:
3.8W
机构
引用论文
.png){kind=icon}
An improved frequency-quadrupling triangular waveform generation based on external modulation and polarization control基于外部调制和偏振控制的一种改进型频率四倍频三角波生成方法
OAAI
OAAI分享收藏Geometrically-Shaped Multi-Dimensional Modulation Formats in Coherent Optical Transmission SystemsOAAI
OAAI分享收藏
查看更多内容