Results 31 to 40 of about 4,644,594 (299)

Parallelized Kalman Filters for Mitigation of the Excess Phase Noise of Fast Tunable Lasers in Coherent Optical Communication Systems

IEEE Photonics Journal, 2018
Numerical and experimental investigations are carried out on the performance of parallelized Kalman filters applied for mitigation of the excess phase noise of fast tunable lasers.
Fan Liu, Yi Lin, Yonglin Yu, Liam P. Barry   +3 more
doaj   +1 more source

Two-stage frequency compensation for Doppler shift on BPSK transceiver with LDPC codes for free-space optical communication systems

Frontiers in Physics, 2023
The deployment of low earth orbits is seen as a promising way of enlarging data capacities as well as high data rates. Catering to these interests, optical communication presents possible ways of larger bandwidth than microwave communication. The current
Jiacheng Meng, Jiacheng Meng, Tingting Wei, Yufei Wang, Zhaofeng Bai, Zhaofeng Bai, Junxia Wu, Duorui Gao, Duorui Gao, Zhuang Xie, Yunqiang Zheng, Wenchao Nie, Sentao Wei, Wei Wang, Wei Wang, Xiaoping Xie, Xiaoping Xie   +16 more
doaj   +1 more source

Numerical Analysis of Dither Induced Penalty for Automatic Bias Control Methods

IEEE Photonics Journal
The Mach-Zehnder modulator (MZM) is widely used in high-speed optical communication, and the stability of its bias point is the key to maintain the performance of the communication system.
Jinyang Wu, Linsheng Zhong, Xiaoxiao Dai, Qi Yang, Mengfan Cheng, Lei Deng, Deming Liu   +6 more
doaj   +1 more source

Compensation of Limited Bandwidth and Nonlinearity for Coherent Transponder

Applied Sciences, 2019
Coherent optical transponders are widely deployed in today’s long haul and metro optical networks using dense wavelength division multiplexing.
Qiang Wang, Yang Yue, Jon Anderson
doaj   +1 more source

Post-FEC Performance of Pilot-Aided Carrier Phase Estimation over Cycle Slip

Applied Sciences, 2019
The POST-forward error correction (FEC) bit error rate (BER) performance and the cycle-slip (CS) probability of the carrier phase estimation (CPE) scheme based on Viterbi−Viterbi phase estimation (VVPE) algorithm and the VV cascaded by pilot-aided ...
Yan Li, Quanyan Ning, Lei Yue, Honghang Zhou, Chao Gao, Yuyang Liu, Jifang Qiu, Wei Li, Xiaobin Hong, Jian Wu   +9 more
doaj   +1 more source

Quantum Communication Complexity with Coherent States and Linear Optics [PDF]

, 2014
We introduce a general mapping for encoding quantum communication protocols involving pure states of multiple qubits, unitary transformations, and projective measurements into another set of protocols that employ coherent states of light in a ...
Lütkenhaus, Norbert, Arrazola, Juan Miguel   +1 more
core   +1 more source

Coherent optical communications

Optical Fiber Communication, 1985
Coherent optical communication systems became possible with development of the gas laser in the early 1960s. During the decade following development of the laser, Enloe and Rodda showed homodyne detection to be possible when they successfully phase-locked two gas lasers.
T. G. Hodgkinson, D. W. Smith, Richard Wyatt, D. J. Malyon   +3 more
openaire   +3 more sources

The microbiome in human skin aging

FEBS Letters, EarlyView.
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana, Cornelia Wiegand, Omid Omrani, Mario Fabri   +3 more
wiley   +1 more source

Non-coherent and semi-coherent schemes for physical-layer wireless network coding [PDF]

, 2011
We investigate non-coherent and semi-coherent schemes for physical-layer network coding in two-way relaying scenarios. We distinguish between scenarios without any channel knowledge requirements (non-coherent communication) and scenarios when either the ...
Utkovski, Z., Popovski, Petar, Petar Popovski, Popovski, P.; id_orcid, Zoran Utkovski, Utkovski, Zoran   +5 more
core   +2 more sources

Unique circulating miRNAome signatures captured with distinct molecular states in Lynch syndrome and sporadic colorectal cancer

Molecular Oncology, EarlyView.
Circulating microRNA profiles distinguish nonmalignant Lynch syndrome from cancer‐associated Lynch syndrome, sporadic colorectal cancer, and healthy controls. Age‐stratified analysis reveals disease‐specific regulatory states, and a six‐miRNA panel shows concordant separation in an independent colorectal tissue cohort.
Ramadhani Salum Chambuso, Md Shohel Ul Islam, Rosa M Xicola, Raj Ramesar, Xavier Llor, Sinclair Steele   +5 more
wiley   +1 more source