研究目的
Investigating the performance of conventional blind frequency offset estimation (FOE) algorithms in probabilistically shaped (PS)-MQAM systems and proposing novel algorithms to address their limitations.
研究成果
The GCHE algorithm offers the best and robust performance in PS systems with various constellation entropies, indicating its suitability for applications in flexible optical networks. The RD-4th power algorithm performs well in most cases except for very weak shaping.
研究不足
The study is limited to simulation-based analysis and does not include experimental validation. The impact of non-linear interference (NLI) induced by the fiber Kerr effect is acknowledged but not comprehensively studied.
