On the Capacity of Amplitude Modulated Soliton Communication over Long Haul Fibers
| العنوان: | On the Capacity of Amplitude Modulated Soliton Communication over Long Haul Fibers |
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| المؤلفون: | Alex Alvarado, Majid Safari, Yu Chen, Iman Tavakkolnia |
| المساهمون: | Information and Communication Theory Lab, Signal Processing Systems, EAISI Foundational, Center for Wireless Technology Eindhoven |
| المصدر: | Entropy, 22(8):899. Multidisciplinary Digital Publishing Institute (MDPI) Entropy Volume 22 Issue 8 Entropy, Vol 22, Iss 899, p 899 (2020) |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute (MDPI), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | General Physics and Astronomy, lcsh:Astrophysics, 02 engineering and technology, Article, symbols.namesake, Channel capacity, 020210 optoelectronics & photonics, Nonlinear fiber optics, lcsh:QB460-466, 0202 electrical engineering, electronic engineering, information engineering, lcsh:Science, Jitter, Computer Science::Information Theory, Physics, Soliton communication, Mathematical analysis, Variance normalizing transform, 020206 networking & telecommunications, lcsh:QC1-999, Nonlinear system, Amplitude, Additive white Gaussian noise, Distribution (mathematics), symbols, Achievable information rate, lcsh:Q, Soliton, lcsh:Physics, Communication channel, Solitonic interaction |
| الوصف: | The capacity limits of fiber-optic communication systems in the nonlinear regime are not yet well understood. In this paper, we study the capacity of amplitude modulated first-order soliton transmission, defined as the maximum of the so-called time-scaled mutual information. Such definition allows us to directly incorporate the dependence of soliton pulse width to its amplitude into capacity formulation. The commonly used memoryless channel model based on noncentral chi-squared distribution is initially considered. Applying a variance normalizing transform, this channel is approximated by a unit-variance additive white Gaussian noise (AWGN) model. Based on a numerical capacity analysis of the approximated AWGN channel, a general form of capacity-approaching input distributions is determined. These optimal distributions are discrete comprising a mass point at zero (off symbol) and a finite number of mass points almost uniformly distributed away from zero. Using this general form of input distributions, a novel closed-form approximation of the capacity is determined showing a good match to numerical results. Finally, mismatch capacity bounds are developed based on split-step simulations of the nonlinear Schro¨ dinger equation considering both single soliton and soliton sequence transmissions. This relaxes the initial assumption of memoryless channel to show the impact of both inter-soliton interaction and Gordon&ndash Haus effects. Our results show that the inter-soliton interaction effect becomes increasingly significant at higher soliton amplitudes and would be the dominant impairment compared to the timing jitter induced by the Gordon&ndash Haus effect. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1099-4300 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e3513262838f025e0ebd2eeff9b36f1 https://research.tue.nl/en/publications/39e846d8-3f6a-4700-ba43-592e26304e8d |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....8e3513262838f025e0ebd2eeff9b36f1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10994300 |
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