Low-overhead joint pre-distortion and QDA equalization scheme in 100-Gb/s PAM4 signals IM/DD-based system

被引：0
作者：
Zhang, Yingxue [1 ]
Fang, Xiangmin [1 ]
Bi, Meihua [1 ,2 ]
Zhang, Yongqiang [1 ]
Wu, Huiyan [3 ]
Hu, Miao [1 ]
机构：
[1] Hangzhou Dianzi Univ, Sch Commun Engn, Xiasha Gaojiaoyuan 2rd St, Hangzhou 310018, Zhejiang Provin, Peoples R China
[2] Shanghai Jiao Tong Univ, Dept Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
[3] Northeastern Univ Qinhuangdao, Sch Control Engn, Qinhuangdao 066004, Hebei Province, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2025年 / 92卷
关键词：
Look-up table; Quadratic discriminant analysis; Intensity modulation direct detection; Equalization; TRANSMISSION; SPARSE;
D O I：
10.1016/j.yofte.2025.104182
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：
In this paper, a low overhead joint look-up table (LUT) and quadratic discriminant analysis (QDA) scheme is firstly presented to realize the compensation of inter-symbol interference (ISI) in the high-speed short-range intensity modulation and direct detection (IM/DD) system. Here, the LUT is employed to mitigate the signal distortion by generating pre-distorted signals, and the QDA is utilized to equalize the received signals that without requiring the extra complex optimization algorithm. A 100-Gb/s 4-level pulse amplitude modulation (PAM-4) IM/DD simulation transmission system is established to verify the effectiveness of our proposed scheme. The results show that the proposed LUT-QDA reduces the training sequence length by 76% and the number of taps by 63% compared to Volterra, and outperforms the Volterra and QDA by almost 1.3 dBm and 1.5 dBm at 20 km standard single-mode fiber (SSMF) transmission, respectively.
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页数：7
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