Nonlinear Frequency Division Multiplexed Transmissions Based on NFT

Dong, Zhenhua; Hari, Siddarth; Gui, Tao; Zhong, Kangping; Yousefi, Mansoor I.; Lu, Chao; Wai, P.K.A.; Kschischang, Frank R.; Lau, Alan Pak Tao

doi:10.1109/lpt.2015.2432793

Cited by 112 publications

(63 citation statements)

References 6 publications

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“…This lack of attention can be explained as being in part due to the unavailability of practical coherent modulation and demodulation techniques, high-speed analogto-digital converters, and high-speed digital signal processing devices at that time, and in part due to the fact that no particular encoding and detection techniques were given in [5], except for the rather special case of multisoliton signals of the form Asech(t). More recently, there have been several related experimental studies, including NFT-based receivers for BPSK signaling [8], noise tolerance of multisoliton transmissions [9], and demonstration of reliable multisoliton-based information transmission over a distance of 1800 km [10].…”

Section: Introductionmentioning

confidence: 99%

Multieigenvalue Communication

Hari

Yousefi

Kschischang

2016

J. Lightwave Technol.

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In the most general case, all three componentsthe discrete eigenvalues, the discrete spectral amplitudes and the continuous spectrum-of the nonlinear Fourier transform (NFT) of a signal can be independently modulated. This paper examines information transmission using only the discrete eigenvalues, and presents heuristic designs for multisoliton signal sets with spectral efficiencies greater than 3 bits/s/Hz. The first design, called multieigenvalue position encoding, is based on an exhaustive search followed by pruning of the signal set to remove high pulsewidth or high bandwidth outliers. The second design, called trellis encoding, achieves comparable efficiencies to the fist method at much lower complexity. These multisoliton signals do not undergo any pulse broadening, but are significantly limited by bandwidth expansion if the system length is not much smaller than the dispersion length parameter. This limitation suggests that modulating the eigenvalues alone cannot address the problem of nonlinearity in commercial fiber transmission systems, and that our proposed methods are only meaningful when dispersion is very small and dominated by nonlinearity, e.g., close to the zero-dispersion wavelength at 1300 nm.

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Section: Introductionmentioning

confidence: 99%

Multieigenvalue Communication

Hari

Yousefi

Kschischang

2016

J. Lightwave Technol.

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“…As a result, the nonlinearity-induced cross-talk between them is effectively absent during propagation [1]. Recently, initial experimental demonstrations of NFT-based systems with the use of discrete spectrum have been reported [5,6]. However, the number of transmitted bits per burst and distance reach were limited to 4 bits/burst over 640 km in [5] and 3 bits/burst over 1800 km in [6], respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, initial experimental demonstrations of NFT-based systems with the use of discrete spectrum have been reported [5,6]. However, the number of transmitted bits per burst and distance reach were limited to 4 bits/burst over 640 km in [5] and 3 bits/burst over 1800 km in [6], respectively. One of the key challenges for NFT-based communication is to develop new effective techniques to encode and detect information to/from the signal's nonlinear spectrum.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we report a significant improvement in NFT-based system performance by experimentally demonstrating for the first time, the generation, transmission and detection of a 10Gbaud NFT-based signal (120 bits/burst) over a distance of 7344 km. This represents a factor of 12 improvement in data capacity x distance product compared with other NFT-based systems [5,6]. In this experiment, information is encoded directly onto the continuous part of the signal's nonlinear spectrum using QPSK OFDM waveform via inverse NFT (INFT) and the nonlinear inverse synthesis (NIS) transmission scheme [4, 7 -9] …”

Section: Introductionmentioning

confidence: 99%

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First Experimental Demonstration of Nonlinear Inverse Synthesis Transmission over Transoceanic Distances

Le¹,

Philips²,

Prilepsky³

et al. 2016

Optical Fiber Communication Conference

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“…Also it can be envisioned that the DRA is helpful in recently proposed nonlinear Fourier transform (NFT) based transmissions. The NFT technique may be a promising solution to combat fiber nonlinearity and its performance depends on lossless span assumption [3,4]. The distributed gain brought by the DRA can well approximate a lossless link.…”

Section: Introductionmentioning

confidence: 99%