Sequential Number-Theoretic Optimization for High-Dimensional Channel Equalization in Coherent Optical Communication Systems

In this paper, we propose to jointly estimate channel distortions including the transmitter and receiver in- phase/quadrature (IQ) mismatch, frequency offset (FO) and phase noise (PN) by sequential number-theoretic optimization (SNTO) in coherent optical communication systems. A decision-feedback si...

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Vydáno v:Optoelectronics and Communications Conference s. 1 - 3
Hlavní autoři: Liu, Shuai, Yu, Keying, Xu, Yangfan, Du, Xinwei, Wang, Qian, Yu, Changyuan
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 30.06.2024
Témata:
Accuracy
Channel estimation
Estimation
frequency offset
Heuristic algorithms
In-phase/quadrature mismatch
Optical distortion
Optical fiber communication
Optimization
Phase noise
Robustness
sequential number-theoretic optimization
Signal detection
ISSN:2166-8892
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Popis
Shrnutí:In this paper, we propose to jointly estimate channel distortions including the transmitter and receiver in- phase/quadrature (IQ) mismatch, frequency offset (FO) and phase noise (PN) by sequential number-theoretic optimization (SNTO) in coherent optical communication systems. A decision-feedback signal detection scheme is subsequently proposed after the joint estimation, which guarantees real-time estimation of the PN. The feasibility, accuracy and robustness of the proposed SNTO-based algorithm are verified via simulations.
ISSN:2166-8892
DOI:10.1109/OECC54135.2024.10975595