An Experiment of Coherent Optical DFT-spread OFDM with Laser Phase Noise
Conference: Photonische Netze - Vorträge der 14. ITG-Fachtagung
05/06/2013 - 05/07/2013 at Leipzig, Germany
Proceedings: Photonische Netze
Pages: 3Language: englishTyp: PDF
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Authors:
Jan, Omar; Al-Bermani, Ali; Puntsri, Kidsanapong; Sandel, David; Noé, Reinhold (University of Paderborn, EIM-E, ONT, Warburger Str. 100, Paderborn, Germany)
Woerdehoff, Christian; Rueckert, Ulrich (Bielefeld University, CITEC, Universitätsstr. 21, 33615 Bielefeld, Germany)
Abstract:
We investigate the impact of laser phase noise (LPN) on the DFT-spread CO-OFDM system. The experiment shows that DFT-spread CO-OFDM is more sensitive to LPN than conventional CO-OFDM. This is because DFT-spread COOFDM suffers higher inter-carrier interference (ICI) caused by LPN. We also observed that if the number of sub-bands is increased then the ICI due to LPN is increased as well. The bit-error-ratio (BER) is improved by applying the noniterative interpolation based partial ICI compensation method to DFT-spread CO-OFDM.