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|Title:||A performance investigation of correlation-based and pilot-tone-assisted frequency offset compensation method for CO-OFDM|
|Citation:||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|
|Appears in Collections:||Staff Publications|
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