Nonlinearity-Tolerant Four-Dimensional 2A8PSK Family for 5–7 Bits/Symbol Spectral Efficiency

Kojima, K.; Yoshida, Tsuyoshi; Koike‐Akino, Toshiaki; Millar, David S.; Parsons, Kieran; Pajovic, Milutin; Arlunno, Valeria

doi:10.1109/jlt.2017.2662942

Cited by 62 publications

(93 citation statements)

References 35 publications

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“…The optimum code for the target GMI of 0.85 is Figure 4. Constellation and bit-to-symbol mapping of 2A8PSK [30].…”

Section: B4d-2a8pskmentioning

confidence: 99%

“…Here, we use the recently proposed Q-factor definition based on GMI and not on pre-FEC BER as follows [44]: Figure 9. Span loss budget of four 5 bits/symbol modulation formats as a function of launch power for the dispersion unmanaged link [30].…”

Section: Separated Nonlinearitymentioning

confidence: 99%

“…Figure 11. Generalized Q-factor for 6b4D-2A8PSK and DP-Star-8QAM with separated nonlinear effects at a launch power of À4 dBm and OSNR of 15.2 dBm [30].…”

Section: Adaptive Equalizermentioning

confidence: 99%

“…In particular, 4D-2A8PSK with the spectral efficiency of 6 bits/symbol has been shown to have superior linear and nonlinear performance than many other formats, because of its large Euclidean distance, 4D constant modulus characteristics (i.e., constant power in each time slot), and Gray labeling [26][27][28]. By relating this to the block coding approach described in the context of highdimensional modulation [14], 5,6, and 7 bits/symbol modulation formats were described as a family of block-coded 4D-2A8PSK in a unified form in [29,30]. In Section 4, we first describe the 4D-2A8PSK modulation format family for 5-7 bits/symbol spectral efficiencies.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinearity-Tolerant Modulation Formats for Coherent Optical Communications

Kojima¹,

Koike‐Akino²,

Yoshida³

et al. 2018

Selected Topics on Optical Fiber Technologies and Applications

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Fiber nonlinearity is the main factor limiting the transmission distance of coherent optical communications. We overview several modulation formats intrinsically tolerant to fiber nonlinearity. We recently proposed family of 4D modulation formats based on 2-ary amplitude 8-ary phase-shift keying (2A8PSK), covering the spectral efficiency of 5, 6, and 7 bits/4D symbol, which will be explained in detail in this chapter. These coded modulation formats fill the gap of spectral efficiency between DP-QPSK and DP-16QAM, showing superb performance both in linear and nonlinear regimes. Since these modulation formats share the same constellation and use different parity bit expressions only, digital signal processing can accommodate those multiple modulation formats with minimum additional complexity. Nonlinear transmission simulations indicate that these modulation formats outperform the conventional formats at each spectral efficiency. We also review DSP algorithms and experimental results. Their application to time-domain hybrid modulation for 4-8 bits/4D symbol is also reviewed. Furthermore, an overview of an eight-dimensional 2A8PSK-based modulation format based on a Grassmann code is also given. All these results indicate that the 4D-2A8PSK family show great promise of excellent linear and nonlinear performances in the spectral efficiency between 3.5 and 8 bits/4D symbol.

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“…The optimum code for the target GMI of 0.85 is Figure 4. Constellation and bit-to-symbol mapping of 2A8PSK [30].…”

Section: B4d-2a8pskmentioning

confidence: 99%

Section: Separated Nonlinearitymentioning

confidence: 99%

“…Figure 11. Generalized Q-factor for 6b4D-2A8PSK and DP-Star-8QAM with separated nonlinear effects at a launch power of À4 dBm and OSNR of 15.2 dBm [30].…”

Section: Adaptive Equalizermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonlinearity-Tolerant Modulation Formats for Coherent Optical Communications

Kojima¹,

Koike‐Akino²,

Yoshida³

et al. 2018

Selected Topics on Optical Fiber Technologies and Applications

Self Cite

View full text Add to dashboard Cite

show abstract

“…Multidimensional constant modulus modulation formats have been shown to minimize the non-linear interference noise by minimizing the signal power variations [1,2]. Recently, the four-dimensional 64-ary polarizationring-switching (4D-64PRS) format was introduced in [3], where the 4D coordinates and labeling were jointly optimized.…”

Section: Introductionmentioning

confidence: 99%