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- Title
A Decision Feedback Equalization Algorithm Based on Simplified Volterra Structure for PAM4 IM-DD Optical Communication Systems.
- Authors
Xie, Yao; He, Peili; Li, Wei; Li, Na
- Abstract
Featured Application: Authors are encouraged to provide a concise description of the specific application or a potential application of the work. This section is not mandatory. A novel simplifying Volterra structure algorithm is proposed for an intensity modulation direct detection (IM-DD) optical fiber short distance communication system using the decision feedback equalization algorithm (DFE). Based on this algorithm, the signal damage for the four-level pulse amplitude modulation signal (PAM-4) is compensated, which is caused by device bandwidth limitation and dispersion during transmission. Experiments have been carried out using a 25 GHz Electro-absorption Modulated Laser (EML), showing that PAM-4 signals can transmit over 10 km in standard single-mode fiber (SSMF). The 112 Gbps and 128 Gbps signals can reach the error rate threshold of KP4-FEC (BER = 2 × 10−4) and HD-FEC (BER = 3.8 × 10−3), respectively. The simplified principle and process of the proposed Volterra-based equalization algorithm are presented. Experimental results show that the algorithm complexity is greatly reduced by 75%, which provides effective theoretical support for the commercial application of this algorithm.
- Subjects
GREAT Britain. Dept. for Education; DECISION feedback equalizers; PULSE amplitude modulation; SINGLE-mode optical fibers; TELECOMMUNICATION systems; DATA transmission systems; OPTICAL communications; PSYCHOLOGICAL feedback
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 14, p8125
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app13148125