Results 21 to 30 of about 145,363 (99)

Machine learning aided carrier recovery in continuous-variable quantum key distribution

npj Quantum Information, 2021
The secret key rate of a continuous-variable quantum key distribution (CV-QKD) system is limited by excess noise. A key issue typical to all modern CV-QKD systems implemented with a reference or pilot signal and an independent local oscillator is ...
Hou-Man Chin, Nitin Jain, Darko Zibar, Ulrik L. Andersen, Tobias Gehring   +4 more
doaj   +1 more source

Visualization of Hot Carrier Dynamics in a Single CsPbBr₃ Perovskite Microplate Using Femtosecond Kerr-Gated Wide-Field Fluorescence Spectroscopy

Nanomaterials, 2023
Lead halide perovskites (LHPs) have excellent semiconductor properties. They have been used in many applications such as solar cells. Recently, the hot carrier dynamics in this type of material have received much attention as they are useful for ...
Zhenqiang Huang, Wenjiang Tan, Peipei Ma, Lihe Yan, Jinhai Si, Xun Hou   +5 more
doaj   +1 more source

FPGA-Based Implementation of All-Digital QPSK Carrier Recovery Loop Combining Costas Loop and Maximum Likelihood Frequency Estimator

International Journal of Reconfigurable Computing, 2014
This paper presents an efficient all digital carrier recovery loop (ADCRL) for quadrature phase shift keying (QPSK). The ADCRL combines classic closed-loop carrier recovery circuit, all digital Costas loop (ADCOL), with frequency feedward loop, maximum ...
Kaiyu Wang, Zhiming Song, Xianwei Qi, Qingxin Yan, Zhenan Tang   +4 more
doaj   +1 more source

Development and Evaluation of Nipa (Nypa Fruticans) Vinegar Powder

JPAIR, 2018
Due to emerging technologies, the improvization of products is a new trend. Spray drying is a new technology that transforms a product in liquid phase into a dry particulate powder. This study investigated the possibility of developing powder out of nipa
Mario A. De Castro Jr.
doaj   +1 more source

Influence of combined hydrolyzed collagen and maltodextrin as carrier agents in spray drying of cocona pulp

Brazilian Journal of Food Technology, 2020
This work aimed to evaluate the effect of carrier agents containing maltodextrin and protein, represented by hydrolyzed collagen on the spray drying process of cocona (Solanum sessiliflorum Dunal), and on the properties of the resulting powders.
Diana Patricia Vargas-Muñoz, Louise Emy Kurozawa   +1 more
doaj   +1 more source

Analytical Investigations on Carrier Phase Recovery in Dispersion-Unmanaged n-PSK Coherent Optical Communication Systems

Photonics, 2016
Using coherent optical detection and digital signal processing, laser phase noise and equalization enhanced phase noise can be effectively mitigated using the feed-forward and feed-back carrier phase recovery approaches.
Tianhua Xu, Gunnar Jacobsen, Sergei Popov, Jie Li, Tiegen Liu, Yimo Zhang, Polina Bayvel   +6 more
doaj   +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

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

Fast carrier recovery in FHSS systems with DDS based Costas loop [PDF]

Electronics, 2015
Owing to fast change of carrier frequency, the usage of coherent demodulation methods in Frequency-Hopping Spread Spectrum (FHSS) communication systems is limited by the coherent state acquisition performed by the local oscillator.
Slavko Šajić
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