Abstract
There is no doubt that Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) is considered as an attractive modulation format. The previously mentioned term has received a great deal of attention in recent years within the long haul fiber-optic transmission community. However, the benefit of optical OFDM is concerned with indefinite quantity of eliminating Inter Symbol Interference (ISI). Such a quantity is caused due to Chromatic Dispersion (CD) and polarization-mode dispersion (PMD).
Consequently, CO-OFDM exhibits a robust and spectrally efficient modulation scheme for the succeeding generation of the high-speed optical communications. In this paper, the CO-OFDM system is analyzed according to a couple of modulation mapping orders which take into account the effect of continuous wave (CW) laser line width. Interestingly, this paper deals with the performance investigation of the system design in terms of transmission distance, Bit Error Rate (BER), Quality Factor (QF) and Error Vector Magnitude (EVM). It has been noticed that the system resistance against high Bit Error Rate is obtained when two certain mapping orders of 4QAM and 16QAM are considered at bit rate 10 Gbps. As a result, it has been found that the system can achieve up to 950 km and 660 km distances respectively, by using VPI simulator compared to the existing systems.
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Al-Hashime, L.A., Al-Suhail, G.A., Abdul Satar, S.M. (2018). Modulation Mapping Influence in Coherent Optical OFDM System for Long Haul Transmission. In: Al-mamory, S., Alwan, J., Hussein, A. (eds) New Trends in Information and Communications Technology Applications. NTICT 2018. Communications in Computer and Information Science, vol 938. Springer, Cham. https://doi.org/10.1007/978-3-030-01653-1_12
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