Projects per year
Abstract
In optical communication systems, short blocklength probabilistic enumerative sphere shaping (ESS) provides both linear shaping gain and nonlinear tolerance. In this work, we investigate the performance and complexity of ESS in comparison with fiber nonlinearity compensation via digital back propagation (DBP) with different steps per span. We evaluate the impact of the shaping blocklength in terms of nonlinear tolerance and also consider the case of ESS with a Volterra-based nonlinear equalizer (VNLE), which provides lower complexity than DBP. In single-channel transmission, ESS with VNLE achieves similar performance in terms of finite length bit-metric decoding rate to uniform signaling with one step per span DBP. In the context of a dense wavelength-division multiplexing (WDM) transmission system, we show that ESS outperforms uniform signaling with DBP for different step sizes.
| Original language | English |
|---|---|
| Article number | 9222115 |
| Pages (from-to) | 1435-1438 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 32 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 15 Nov 2020 |
Funding
This work was supported in part by the Natural Sciences and Research Council of Canada (NSERC) and in part by the Netherlands Organization for Scientific Research (NWO) via the VIDI Grant ICONIC under Project 15685.
| Funders | Funder number |
|---|---|
| Nederlandse Organisatie voor Wetenschappelijk Onderzoek | |
| European Union's Horizon 2020 - Research and Innovation Framework Programme | 757791 |
| Natural Sciences and Engineering Research Council of Canada | |
| H2020 European Research Council | |
| Nederlandse Organisatie voor Wetenschappelijk Onderzoek | 15685 |
Keywords
- Digital back propagation
- enumerative sphere shaping
- fiber nonlinearity compensation
- optical communication systems
- probabilistic shaping
- Volterra series
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FUN-NOTCH: Fundamentals of the Nonlinear Optical Channel
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1/01/18 → 30/06/25
Project: Third tier
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ICONIC: Increasing the Capacity of Optical Nonlinear Interfering Channels
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1/08/17 → 31/07/23
Project: Research direct