Compensation for In-Phase/Quadrature Phase Mismatch in Coherent Free-Space Optical QPSK Communication Systems

Compensation for In-Phase/Quadrature Phase Mismatch in Coherent Free-Space Optical QPSK Communication Systems

The Gram–Schmidt orthogonalization procedure (GSOP) and Löwdin symmetric orthogonalization procedure (SYOP) are the two mainstream algorithms for the compensation of phase mismatch in an imperfect optical 90° hybrid. In this paper, we put forward an algorithm switching orthogonalization procedure (A...

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Bibliographic Details
Main Authors: Xueliang Li, Tianwen Geng, Yucong Gu, Ruotong Tian, Shijie Gao
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Applied Sciences
Subjects:
coherent communications
free-space optical
IQ imbalance
orthogonalization procedure
Online Access:https://www.mdpi.com/2076-3417/11/6/2543

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