Results 131 to 140 of about 73,593 (306)

An Optimum Design of FFT Multi-Digit Multiplier and Its VLSI Implementation

open access: yes, 2006
We designed a VLSI chip of FFT multiplier based on simple Cooly-Tukey FFT using a floating-point representation with optimal data length based on an experimental error analysis.
Yazaki, Syunji, Abe, Koki
core  

FFT algorithm

open access: yes, 2021
U Uvodu je predstavljena tema rada i neke osnovne pojmove. Drugo poglavlje obuhvaća signale i razne podjele signala. Treće poglavlje bavi se Fourierovom analizom, odnosno reprezentacijom signala u frekvencijskoj domeni.
Dekleva, Mihael
core  

Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators

open access: yesAdvanced Materials, EarlyView.
Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng   +11 more
wiley   +1 more source

Chiral Microneedle Arrays With Terahertz Chiroptical Activity With Chiral‐Plasmon‐Chiral‐Phonon Resonance

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Microneedle arrays (MNAs) is a rapidly emerging technology with broad biomedical applications in drug delivery and biosensing. With sub‐millimeter dimensions and periodicity, MNAs possess geometries nearly ideal for biomedical devices operating within the terahertz (THz) spectral window.
Sang Hyun Lee   +6 more
wiley   +1 more source

PERBANDINGAN KINERJA SISTEM OFDM ADAPTIVE ARRAY ANTENNA DENGAN TEKNIK POST-FFT DAN PRE-FFT [PDF]

open access: yes, 2006
ABSTRAKSI: Orthogonal Frequency Division Multipexing (OFDM) merupakan skema komunikasi multicarrier dimana bandwidth kanal dibagi menjadi beberapa subcarrier dan simbol data dimodulasi dan ditransmisikan pada tiap subcarrier.
WIDYATI NINGTYAS
core  

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

open access: yesAdvanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief   +12 more
wiley   +1 more source

An improved two-stage fast acquisition method based on FFT

open access: yesDianzi Jishu Yingyong
The navigation enhancement signals in communication and navigation integration signals are characterized by limited spectrum resources and non-continuous transmission.
Song Ruoyu   +3 more
doaj   +1 more source

Direct Synthesis of High‐Valence Protein@UiO‐66 Composites: Linking Crystallization Pathways to Protein Encapsulation

open access: yesAdvanced Materials, EarlyView.
This work reports a direct, biocompatible method to synthesize UiO‐66, enabling one‐step encapsulation of proteins without compromising crystallinity or activity. Using advanced in situ and ex situ techniques, the study reveals that proteins integrate concurrently with MOF growth, forming crystalline protein@UiO‐66 nanoparticles, and provide insight ...
Jesús Cases Díaz   +5 more
wiley   +1 more source

Transform Domain Based Iris Recognition using EMD and FFT

open access: yes, 2017
Iris is one of the physiological trait which is used to identify the individuals. In this paper Transform Domain Based Iris Recognition using EMD and FFT is proposed.
Raja, K.B.   +3 more
core  

GNSS signal acquisition in the presence of sign transitions [PDF]

open access: yes, 2009
The next generation of Global Navigation Satellite Systems (GNSS), such as Galileo [1] and GPS modernization [2], will use signals with equal code and bit periods, which will introduce a potential sign transition in each segment of the signal processed ...
Kewen Sun   +3 more
core  

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