Accurate two-stage frequency offset estimation for coherent optical systems

• Main Authors: Huang, Dezhao, Cheng, Tee Hiang, Yu, Changyuan
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/107172; http://hdl.handle.net/10220/18039; http://dx.doi.org/10.1109/LPT.2012.2232288
• Institution: Nanyang Technological University

We present a two-stage feedforward frequency offset estimation (FOE) algorithm on the basis of the phase-difference method. The first stage of the proposed FOE generates a rough FOE through averaging the phase difference between two adjacent symbols and compensates the signals. The second stage of t...