Results 11 to 20 of about 723,186 (293)

Probabilistic Shaping for Finite Blocklengths: Distribution Matching and Sphere Shaping

Entropy, 2020
In this paper, we provide a systematic comparison of distribution matching (DM) and sphere shaping (SpSh) algorithms for short blocklength probabilistic amplitude shaping. For asymptotically large blocklengths, constant composition distribution matching (
Yunus Can Gültekin, Tobias Fehenberger, Alex Alvarado, Frans M. J. Willems   +3 more
doaj   +1 more source

Multiwavelength Absolute Phase Retrieval from Noisy Diffractive Patterns: Wavelength Multiplexing Algorithm

Applied Sciences, 2018
We study the problem of multiwavelength absolute phase retrieval from noisy diffraction patterns. The system is lensless with multiwavelength coherent input light beams and random phase masks applied for wavefront modulation.
Vladimir Katkovnik, Igor Shevkunov, Nikolay V. Petrov, Karen Eguiazarian   +3 more
doaj   +1 more source

Phase-coherent lightwave communications with frequency combs [PDF]

, 2019
Fiber-optical networks are a crucial telecommunication infrastructure in society. Wavelength division multiplexing allows for transmitting parallel data streams over the fiber bandwidth, and coherent detection enables the use of sophisticated modulation ...
Andrekson, Peter A., Foo, Benjamin, Karlsson, Magnus, Lundberg, Lars, Mazur, Mikael, Mirani, Ali, Schröder, Jochen, Torres-Company, Victor   +7 more
core   +2 more sources

Discrimination of Active False Targets Based on Hermitian Distance for Distributed Multiple-Radar Architectures

IEEE Access, 2019
In a distributed multiple-radar architecture, the spatial scattering properties of targets can be utilized to counter active deception jamming effectively.
Qiang Li, Linrang Zhang, Yu Zhou, Shanshan Zhao, Nan Liu, Juan Zhang   +5 more
doaj   +1 more source

Development of new all-optical signal regeneration technique [PDF]

, 2017
All-optical signal regeneration have been the active research area since last decade due to evolution of nonlinear optical signal processing. Existing all-optical signal regeneration techniques are agitated in producing low Bit Error Rate (BER) of 10-10 ...
A Mohajerin-Ariaei, AE Willner, B Das, B Das, Bhagwan Das, Bishwajeet Pandey, C Lundström, F Parmigiani, F Wen, H Zhu, I Kaminow, J Wang, L Jones, Labeeb Mohammed Adam Ahmed, M Kagawa, Mohammad Faiz Liew Abdullah, Nor Shahida Mohd Shah, R Damani, R Slavík, SL Olsson, Z Chen, Z Tong   +21 more
core   +1 more source

Optical signal processing via two-photon absorption in a semiconductor microcavity for the next generation of high-speed optical communications network [PDF]

, 2006
Due to the introduction of new broadband services, individual line data rates are expected to exceed 100 Gb/s in the near future. To operate at these high speeds, new optical signal processing techniques will have to be developed.
Barry, Liam P., Bradley, Ann Louise, Donegan, John Francis, Folliot, H., Guo, Wei Hua, Krug, T., Lynch, Michael, Maguire, Paul J., O'Dowd, John   +8 more
core   +2 more sources

Novel Optical Kerr Switching Photonic Device Based on Nonlinear Carbon Material

Micromachines, 2023
In the context of current communication systems, there is an urgent demand for more efficient and higher-speed optical signal processing technologies.
Ke Wang, Zhoufa Xie, Jianhua Ji, Yufeng Song, Bin Zhang, Zhenhong Wang   +5 more
doaj   +1 more source

Research progress of optical signal processing with orbital angular momentum

Tongxin xuebao, 2021
Light beams carrying OAM (orbital angular momentum) exploit the transverse spatial distribution of photons and have helical phase front.In recent years, similar to the WDM (wavelength-division multiplexing) technology, OAM multiplexing technology has ...
Jun LIU, Jian WANG
doaj   +2 more sources

Hard-Decision Coded Modulation for High-Throughput Short-Reach Optical Interconnect

Entropy, 2020
Coded modulation (CM), a combination of forward error correction (FEC) and high order modulation formats, has become a key part of modern optical communication systems.
Bin Chen, Yi Lei, Gabriele Liga, Chigo Okonkwo, Alex Alvarado   +4 more
doaj   +1 more source

Nonlinear Optical Microscopy Signal Processing Strategies in Cancer

Cancer Informatics, 2014
This work reviews the most relevant present-day processing methods used to improve the accuracy of multimodal nonlinear images in the detection of epithelial cancer and the supporting stroma.
Javier Adur, Hernandes F. Carvalho, Carlos L. Cesar, Víctor H. Casco   +3 more
doaj   +2 more sources