CUED Publications database

Compensation of frequency offset for differentially encoded 16- and 64-QAM in the presence of laser phase noise

Fatadin, I and Ives, D and Savory, SJ (2010) Compensation of frequency offset for differentially encoded 16- and 64-QAM in the presence of laser phase noise. IEEE Photonics Technology Letters, 22. pp. 176-178. ISSN 1041-1135

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Abstract

The compensation of frequency offset for differentially encoded 16- and 64-ary quadrature amplitude modulation (QAM) in the presence of laser phase noise is investigated. Differential encoding is employed to solve the four-fold phase ambiguity problem in a nondata-aided transmission system with square QAM constellations. Simulation results show that frequency offset and phase noise can successfully be compensated using a second-order digital filter loop for the square QAM constellations. © 2010 IEEE.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:20
Last Modified: 08 Apr 2021 07:18
DOI: 10.1109/LPT.2009.2037329