Performance limits of spectrally-efficient WDM direct-detection SSB Nyquist subcarrier modulation with signal-signal beat interference cancellation

Performance limits of spectrally-efficient WDM direct-detection SSB Nyquist subcarrier modulation with signal-signal beat interference cancellation
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DOI：
10.1109/noc.2015.7238606
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发表时间：
2015-09
期刊：
2015 20th European Conference on Networks and Optical Communications - (NOC)
影响因子：
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通讯作者：
Z. Li;M. S. Erkılınç;S. Pachnicke;H. Griesser;R. Bouziane;B. Thomsen;P. Bayvel;R. Killey
Z. Li;M. S. Erkılınç;S. Pachnicke;H. Griesser;R. Bouziane;B. Thomsen;P. Bayvel;R. Killey
中科院分区：
其他
文献类型：
--
作者：
Z. Li;M. S. Erkılınç;S. Pachnicke;H. Griesser;R. Bouziane;B. Thomsen;P. Bayvel;R. Killey

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We carried out a simulation-based study assessing the performance of WDM direct-detection dispersion pre-compensated single-sideband (SSB) Nyquist-pulse-shaped QAM subcarrier modulated (N-SCM) systems using a receiver-based signal-signal beat interference (SSBI) cancellation technique. The performance improvement with SSBI cancellation, which compensates for the nonlinear distortion caused by square-law detection, was quantified for 9 × 112 Gb/s 16-QAM and 9 × 224 Gb/s 64-QAM N-SCM signals with net optical information spectral densities (ISD) of 2.1 (b/s)/Hz and 4.1 (b/s)/Hz respectively. The simulations predict significant reductions in the required OSNR, and increases of up to 45% in transmission distance over uncompensated standard single-mode fibre (SSMF) using the SSBI compensation technique.