Results 31 to 40 of about 140,728 (306)

Challenges and Innovations in CMOS-Based 300-GHz Transceivers for High-Speed Wireless Communication

open access: yesIEEE Open Journal of the Solid-State Circuits Society
The IEEE 802.15.3d standard, issued in October 2017, defined a high-data-rate wireless physical layer using the 252–325–GHz frequency band, also known as the 300-GHz band, enabling data rates up to 100 Gb/s.
Minoru Fujishima
doaj   +1 more source

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

open access: yesInternational 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   +4 more
doaj   +1 more source

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

open access: yesnpj 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   +4 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Efficient Parallel Carrier Recovery for Ultrahigh Speed Coherent QAM Receivers with Application to Optical Channels

open access: yesJournal of Electrical and Computer Engineering, 2013
This work presents a new efficient parallel carrier recovery architecture suitable for ultrahigh speed intradyne coherent optical receivers (e.g., ≥100 Gb/s) with quadrature amplitude modulation (QAM).
Pablo Gianni   +3 more
doaj   +1 more source

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

open access: yesNanomaterials, 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   +5 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

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

open access: yesBrazilian 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   +1 more
doaj   +1 more source

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

Perencanaan dan Realisasi Carrier Recovery Pada QPSK [PDF]

open access: yes, 2008
ABSTRAKSI: Untuk mendapatkan sinyal informasi yang dikirimkan, pada penerima Quadrature Phase Shift Keying (QPSK) digunakan sistem deteksi koheren. Deteksi koheren merupakan proses untuk mengalikan sinyal masukan dengan sebuah gelombang pembawa referensi
Arif Lineker
core  

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