The impact of the fiber Kerr effect on error statistics in the nonlinear (high power) transmission of the OFDM 16-QAM signal over a 2000 km EDFA-based link is examined. We observed and quantified the difference in the error statistics for constellation points located at three power-defined rings. Theoretical analysis of a trade-off between redundancy and error rate reduction using probabilistic coding of three constellation power rings decreasing the symbol-error rate of OFDM 16-QAM signal is presented. Based on this analysis, we propose to mitigate the nonlinear impairments using the adaptive modulation technique applied to the OFDM 16-QAM signal. We demonstrate through numerical modelling the system performance improvement by the adaptive modulation for the large number of OFDM subcarriers (more than 100). We also show that a similar technique can be applied to single carrier transmission.
|Number of pages||13|
|Early online date||22 Dec 2016|
|Publication status||Published - 26 Dec 2016|
Bibliographical note© 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Funding: EPSRC (UNLOC); and Ministry of Education and Science of Russian Federation (RFMEFI57814X0029 and 14.B25.31.0003).
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Mitigation of nonlinear transmission effects for OFDM 16-QAM optical signal using adaptive modulation
Skidin, A. S. (Creator), Sidelnikov, O. (Creator), Fedoruk, M. P. (Creator) & Turitsyn, S. (Creator), Aston Data Explorer, 28 Feb 2017
DOI: 10.17036/researchdata.aston.ac.uk.00000203, https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-26-30296