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.
Original language | English |
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Pages (from-to) | 22847-22853 |
Number of pages | 7 |
Journal | Optics Express |
Volume | 21 |
Issue number | 19 |
DOIs | |
Publication status | Published - 23 Sept 2013 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics