Results 41 to 50 of about 435,575 (301)

Recent Advances in Carrier Phase Recovery Algorithms

Optical Fiber Communication Conference (OFC) 2023, 2023
We review the most recent advances in carrier phase estimation algorithms for coherent optical communications, with special emphasis on multi-carrier modulation systems and on the interplay between linear and nonlinear phase noise sources.
Guiomar, Fernando P., Neves, Manuel S., Lorences-Riesgo, Abel, Martins, Celestino S., Mumtaz, Sami, Frignac, Yann, Charlet, Gabriel, Monteiro, Paulo P.   +7 more
openaire   +1 more source

Spatiotemporal communication with synchronized optical chaos

, 2000
We propose a model system that allows communication of spatiotemporal information using an optical chaotic carrier waveform. The system is based on broad-area nonlinear optical ring cavities, which exhibit spatiotemporal chaos in a wide parameter range ...
A. Amengual, C. R. Mirasso, D. W. McLaughlin, D. W. McLaughlin, G. D. VanWiggeren, G. D. VanWiggeren, G. Pérez, H. D. I. Abarbanel, I. Fischer, J. García-Ojalvo, J. H. Xiao, J. K. White, J. P. Goedgebuer, J. V. Moloney, K. Ikeda, K. Ikeda, K. M. Cuomo, L. Junge, L. Kocarev, L. Kocarev, L. Kocarev, L. M. Pecora, M. Haeltermann, M. Le Berre, M. Le Berre, M. Sauer, M. Sauer, P. Colet, Rajarshi Roy, S. Boccaletti, S. Sivaprakasam, Y. Jiang, Y. Liu   +32 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Preparation of Pharmaceutical-Grade Yttrium-90 Using Hold-back Carrier Method Coupled with Electrochemical Method

Journal of Isotopes
To address the technical challenge that traditional electrochemical methods face in balancing high 90Y recovery with low 90Sr residue during the separation of 90Sr/90Y，this study proposes for the first time the combination of the hold-back carrier method
Xingyan TANG, Songbai ZENG, Yanjun LI, Bin REN, Sifan LEI, Wenming HE   +5 more
doaj   +1 more source

Yeast tRNA as Carrier in the Isolation of Microscale RNA for Global Amplification and Expression Profiling

BioTechniques, 2002
The characterization of global gene expression patterns of microscale samples is important in many areas of biological and clinical research. The choice of carrier is critical for the efficient isolation and successful amplification of RNA at the ...
Q. Tian Wang, Wenzhong Xiao, Michael Mindrinos, Ronald W. Davis   +3 more
doaj   +1 more source

Noise characterization of an Optical Frequency Comb using Offline Cross-Correlation

, 2016
Using an offline cross-correlation technique, we have analyzed the noise behavior of a new type of optical frequency comb (OFC), which is carrier envelope offset (CEO) free by configuration, due to difference frequency generation.
Champenois, Caroline, Collombon, Mathieu, Ferrand, Didier, Guyomarc'h, Didier, Hagel, Gaëtan, Houssin, Marie, Khayatzadeh, Ramin, Knoop, Martina, Morizot, Olivier   +8 more
core   +2 more sources

Electron and hole dynamics of InAs/GaAs quantum dot semiconductor optical amplifiers [PDF]

, 2007
Single-color and two-color pump-probe measurements are used to analyze carrier dynamics in InAs/GaAs quantum dot amplifiers. The study reveals that hole recovery and intradot electron relaxation occur on a picosecond time scale, while the electron ...
B. Corbett, Bimberg D., G. Huyet, I. O‘Driscoll, J. Houlihan, R. J. Manning, T. Piwonski   +6 more
core   +5 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Low-Complexity Blind Carrier Phase Recovery for C-mQAM Coherent Systems

IEEE Photonics Journal, 2019
A novel carrier phase recovery algorithm is proposed for coherent optical systems with circular multilevel quadrature amplitude modulation (C-mQAM). After amplitude segmentation and phase rotation, the particular distribution of the constellation points ...
Ping Zhang, Hongliang Ren, Mingyi Gao, Jin Lu, Zichun Le, Yali Qin, Weisheng Hu   +6 more
doaj   +1 more source