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Investigation of CAZAC sequences for data-aided channel estimation considering nonlinear optical transmission

: Nölle, M.; Frey, F.; Elschner, R.; Schmidt-Langhorst, C.; Schubert, C.; Fischer, J.K.


Optical Society of America -OSA-, Washington/D.C.:
Optical Fiber Communication Conference 2015. Proceedings : 22 - 26 March 2015, Los Angeles, California, United States
Washington, DC: OSA, 2015 (OSA Technical digest series)
ISBN: 978-1-55752-937-4
Paper Th3G.2
Optical Fiber Communication Conference (OFC) <2015, Los Angeles/Calif.>
Conference Paper
Fraunhofer HHI ()

We investigate CAZAC sequences with positive and negative chirp for the use as training sequences in data-aided channel estimation. While both sequences show the same linear performance, the right choice of chirp is critical in case of nonlinear transmission. A performance difference of up to 2 dBQ was experimentally verified.