Please use this identifier to cite or link to this item: https://doi.org/10.1364/OE.21.022847
Title: A performance investigation of correlation-based and pilot-tone-assisted frequency offset compensation method for CO-OFDM
Authors: Cao, S.
Yu, C. 
Kam, P.-Y. 
Issue Date: 23-Sep-2013
Source: Cao, S., Yu, C., Kam, P.-Y. (2013-09-23). A performance investigation of correlation-based and pilot-tone-assisted frequency offset compensation method for CO-OFDM. Optics Express 21 (19) : 22847-22853. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.21.022847
Abstract: We carry out a comprehensive analysis to examine the performance of our recently proposed correlation-based and pilot-toneassisted frequency offset compensation method in coherent optical OFDM system. The frequency offset is divided into two parts: fraction part and integer part relative to the channel spacing. Our frequency offset scheme includes the correlation-based Schmidl algorithm for fraction part estimation as well as pilot-tone-assisted method for integer part estimation. In this paper, we analytically derive the error variance of fraction part estimation methods in the presence of laser phase noise using different correlation-based algorithms: Schmidl, Cox and Cyclic Prefix based. This analytical expression is given for the first time in the literature. Furthermore, we give a full derivation for the pilot-tone-assisted integer part estimation method using the OFDM model. © 2013 Optical Society of America.
Source Title: Optics Express
URI: http://scholarbank.nus.edu.sg/handle/10635/54702
ISSN: 10944087
DOI: 10.1364/OE.21.022847
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