title: The robustness of subcarrier-index modulation in 16-QAM CO-OFDM system with 1024-point FFT.
abstract: We present in numerical simulations the robustness of subcarrier index modulation (SIM) OFDM to combat laser phase noise. The ability of using DFB lasers with SIM-OFDM in 16-QAM CO-OFDM system with 1024-point FFT has been verified. Although SIM-OFDM has lower spectral efficiency compared to the conventional CO-OFDM system, it is a good candidate for 16-QAM CO-OFDM system with 1024-point FFT which uses a DFB laser of 1 MHz linewidth. In addition, we show the tolerance of SIM-OFDM for mitigation of fiber nonlinearities in long-haul CO-OFDM system. The simulation results show a significant penalty reduction, essentially that due to SPM.
authors.affiliation: University of Paderborn, EIM-E, Warburger Str. 100, 33098 Paderborn, Germany. omar@ont.upb.de
authors.forename: Omar H A
authors.initials: OH
authors.lastname: Jan
authors.forename: David
authors.initials: D
authors.lastname: Sandel
authors.forename: Kidsanapong
authors.initials: K
authors.lastname: Puntsri
authors.forename: Ali
authors.initials: A
authors.lastname: Al-Bermani
authors.forename: Mohamed
authors.initials: M
authors.lastname: El-Darawy
authors.forename: Reinhold
authors.initials: R
authors.lastname: Noé
mesh_terms: D000465:Algorithms; D016477:Artifacts; D016247:Information Storage and Retrieval / Q000379:methods*; D055096:Optical Devices; D012815:Signal Processing, Computer-Assisted; D059629:Signal-To-Noise Ratio; D013685:Telecommunications