TR2017-038

Nonlinearity-tolerant four-dimensional 2A8PSK family for 5-7 bits/symbol spectral efficiency


    •  Kojima, K., Yoshida, T., Koike-Akino, T., Millar, D.S., Parsons, K., Arlunno, V., "Nonlinearity-tolerant four-dimensional 2A8PSK family for 5-7 bits/symbol spectral efficiency", IEEE Journal of Lightwave Technology, DOI: 10.1109/JLT.2017.2662942, Vol. 35, No. 8, pp. 1383-1391, February 2017.
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      • @article{Kojima2017feb,
      • author = {Kojima, Keisuke and Yoshida, Tsuyoshi and Koike-Akino, Toshiaki and Millar, David S. and Parsons, Kieran and Arlunno, Valeria},
      • title = {Nonlinearity-tolerant four-dimensional 2A8PSK family for 5-7 bits/symbol spectral efficiency},
      • journal = {IEEE Journal of Lightwave Technology},
      • year = 2017,
      • volume = 35,
      • number = 8,
      • pages = {1383--1391},
      • month = feb,
      • doi = {10.1109/JLT.2017.2662942},
      • url = {https://www.merl.com/publications/TR2017-038}
      • }
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  • Research Areas:

    Communications, Signal Processing


We describe in detail the recently proposed fourdimensional modulation format family based on 2-ary amplitude 8-ary phase-shift keying (2A8PSK), supporting spectral efficiencies of 5, 6, and 7 bits/symbol. These formats nicely fill the spectral efficiency gap between dual-polarization quadrature PSK (DP-QPSK) and DP 16-ary quadrature-amplitude modulation (DP-16QAM), with excellent linear and nonlinear performance. Since these modulation formats just use different parity bit expressions in the same constellation, similar digital signal processing can be seamlessly used for different spectral efficiency. A series of nonlinear transmission simulation results shows that this modulation format family outperforms the conventional modulation formats at the corresponding spectral efficiency. We also investigate the adaptive equalizer for these modulation formats.