How to Connect Device Nonlinear Specification and System Nonlinear Penalty

Tao, Zhenning; Zhang, Ke; Yang, Chengwu; Su, Xiaofei; Ye, Tong; Nakashima, Hideharu; Hoshida, Takeshi

doi:10.1364/ofc.2022.th1c.5

Cited by 2 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One choice on equivalent additive noise is the time-domain orthogonal item 32,34 , for instance, the orthogonal signal of another input bit pattern or the orthogonal item with sample shifting (Fig. 4aiii).…”

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

“…"non-specific" means that the system nonlinearity contains more than even-order components 32,33 . Thus, the NPR method is severely restricted to cases with Gaussian stimuli or the systems with special nonlinearity 32,33 . It cannot be used for non-specific communication systems based on pulse amplitude modulation (PAM) and quadrature amplitude modulation (QAM) signals 45,47 , which is the main reason why the NPR method has faded out over the years.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear noise spectrum measurement using a probability-maintained noise power ratio method

Zhang

et al. 2022

Commun Eng

Self Cite

View full text Add to dashboard Cite

Nonlinear distortion (noise) limits many communication systems, demanding a means of estimating system performance via device nonlinear characteristics. The noise power ratio (NPR) method which was proposed in 1971 solves this problem for systems with Gaussian stimuli or with special nonlinearity, but practical and accurate methods for many communication systems with non-Gaussian stimuli are rare. Here we propose a probability-maintained (PM) NPR method to accurately measure the spectrum of nonlinear noise via a spectrum analyzer in non-specific systems, including systems with non-Gaussian stimuli. Using an equivalent additive noise model in which the spectrum of equivalent nonlinear noise is the measurement result of PM NPRs, nonlinear system performance could be estimated with an error of 0.5 dB. Further, we find that zero-mean Chi-square noise, instead of Gaussian noise, should be selected for large memory and low-order nonlinear systems. Our method is verified in seven different scenarios with various nonlinear mechanisms and communication applications.

show abstract

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Nonlinear noise spectrum measurement using a probability-maintained noise power ratio method

Zhang

et al. 2022

Commun Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…One fundamental challenge is that the nonlinear distortion not only depends on the device nonlinear status but also on the input signal characteristics [166]. Thus, the nonlinear distortion measured by a test signal, such as a sinusoidal signal, usually differs from the actual nonlinear distortion in real-world communication [173]. Estimating nonlinear system performance from the device nonlinear characteristics is quite challenging [174].…”

Section: Current and Future Challengesmentioning

confidence: 99%

Roadmap on optical communications

Agrell,

Karlsson,

Poletti

et al. 2024

J. Opt.

View full text Add to dashboard Cite

The Covid-19 pandemic showed forcefully the fundamental importance broadband data communication and the internet has in our society. Optical communications forms the undisputable backbone of this critical infrastructure, and it is supported by an interdisciplinary research community striving to improve and develop it further. Since the first ‘Roadmap of optical communications’ was published in 2016, the field has seen significant progress in all areas, and time is ripe for an update of the research status. The optical communications area has become increasingly diverse, covering research in fundamental physics and materials science, high-speed electronics and photonics, signal processing and coding, and communication systems and networks. This roadmap describes state-of-the-art and future outlooks in the optical communications field. The article is divided into 20 sections on selected areas, each written by a leading expert in that area. The sections are thematically grouped into four parts with 4–6 sections each, covering, respectively, hardware, algorithms, networks and systems. Each section describes the current status, the future challenges, and development needed to meet said challenges in their area. As a whole, this roadmap provides a comprehensive and unprecedented overview of the contemporary optical communications research, and should be essential reading for researchers at any level active in this field.

show abstract

How to Connect Device Nonlinear Specification and System Nonlinear Penalty

Abstract: From system design point of view, it’s required to estimate nonlinear system performance from device nonlinear specification. We discuss various technologies about this topic and find the problem is only partially solved.

Cited by 2 publications

References 3 publications

Nonlinear noise spectrum measurement using a probability-maintained noise power ratio method

Nonlinear noise spectrum measurement using a probability-maintained noise power ratio method

Roadmap on optical communications

Contact Info

Product

Resources

About