A simple two-stage carrier-phase estimation algorithm for 32-QAM coherent optical communication systems

The combination of high-order modulation formats and linewidth-tolerant carrier phase estimation (CPE) can effectively improve spectrum efficiency and relax the limitation of laser linewidth. This paper presents a simple two-stage CPE algorithm for polarization-multiplexed (PM) 32-quadrature amplitu...

Full description

Bibliographic Details

Published in:	Frontiers in Physics
Main Authors:	Min Peng, Xiangqing Wang, Xiaokun Yang, Dongfei Wang
Format:	Article
Language:	English
Published:	Frontiers Media S.A. 2024-09-01
Subjects:	coherent optical communications quadrature amplitude modulation carrier phase estimation QPSK-partitioning blind phase search
Online Access:	https://www.frontiersin.org/articles/10.3389/fphy.2024.1452087/full