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- W2117764306 abstract "Multicarrier optical systems are expected to allow data transmission above 100 Gbps in the next generation long-haul optical networks with a minimum spectral separation between carriers to increase spectral efficiency. Nevertheless, closely separation between optical carriers cause Interchannel interference (ICI) due to the inherent non-linear effects associated to optical fiber such as self-phase modulation (SPM) and cross-phase modulation (XPM). Both SPM and XPM induce a phase shifting in transmitted frequency multiplexed signals. This phase shifting can be observed as a rotated constellation diagram of phase-modulated signals and it degrades system performance by increasing the Bit-Error-Rate (BER). In this paper, a phase offset estimation and compensation using k-means clustering algorithm is validated by simulation in a multicarrier optical system. The optical carriers are modulated in PSK and 16-QAM formats at 32 Gbaud and signal transmission is simulated over standard single-mode fiber (SSMF). System performance is analyzed as a function of frequency carrier spacing and transmission distances. After Phase correction a decrease of the BER is achieved, demonstrating the feasibility and robustness of the proposed clustering technique to compensate induced nonlinear constellations rotations in future multicarrier optical networks." @default.
- W2117764306 created "2016-06-24" @default.
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- W2117764306 date "2015-09-01" @default.
- W2117764306 modified "2023-09-22" @default.
- W2117764306 title "Characterization and compensation of induced non-linear phase offset in multicarrier optical systems based on clustering techniques" @default.
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- W2117764306 doi "https://doi.org/10.1109/stsiva.2015.7330407" @default.
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