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   Articles with "frequency time" as a keyword



Time, frequency, and time-varying Granger-causality measures in neuroscience.

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recommendations! Published in 2018 at "Statistics in medicine"

DOI: 10.1002/sim.7621

Abstract: This article proposes a systematic methodological review and an objective criticism of existing methods enabling the derivation of time, frequency, and time-varying Granger-causality statistics in neuroscience. The capacity to describe the causal links between signals… read more here.

Keywords: frequency time; granger causality; time varying; time ... See more keywords
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Optical pulse waveform generator based on spectral shaping and frequency-to-time-mapping

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recommendations! Published in 2020 at "Optik"

DOI: 10.1016/j.ijleo.2020.164967

Abstract: Abstract Based on the spectral shaping and frequency-to-time-mapping (FTTM), a novel optical pulse waveform synthesis approach is proposed. By inscribed grating into half-tapered fiber or full-tapered fiber, spectrum with triangular shape or spectrum with distinctive… read more here.

Keywords: optical pulse; based spectral; frequency time; spectral shaping ... See more keywords
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Time–frequency time–space LSTM for robust classification of physiological signals

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recommendations! Published in 2021 at "Scientific Reports"

DOI: 10.1038/s41598-021-86432-7

Abstract: Automated analysis of physiological time series is utilized for many clinical applications in medicine and life sciences. Long short-term memory (LSTM) is a deep recurrent neural network architecture used for classification of time-series data. Here… read more here.

Keywords: classification; frequency time; time space; time ... See more keywords

Robust Active Sonar Detection in Frequency and Time Dispersive Channels Using Matching Envelope Spectrum of Multi-Pulse LFM Signals

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recommendations! Published in 2020 at "IEEE Access"

DOI: 10.1109/access.2020.3020624

Abstract: For detecting the target echoes undergoing distortion in frequency and time dispersive channels, a novel robust active sonar detector is proposed. The proposed active detector firstly extracts the matching envelope (ME) of the multi-pulse linear… read more here.

Keywords: dispersive channels; matching envelope; frequency; detector ... See more keywords

Multidimensional Spectrum Information Simultaneously Measurement Based on Stimulated Brillouin Scattering and Ultra-Wideband Frequency-to-Time Mapping

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recommendations! Published in 2025 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2025.3595742

Abstract: Addressing the critical limitations of restricted instantaneous bandwidth and multiparameter coupling in multidimensional spectral analysis of broadband microwave signals, this work presents a photonic fusion measurement system integrating stimulated Brillouin scattering (SBS) and ultrawideband frequency-to-time… read more here.

Keywords: stimulated brillouin; time; brillouin scattering; time mapping ... See more keywords

Movable Antenna-Enabled Co-Frequency Co-Time Full-Duplex Wireless Communication

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recommendations! Published in 2024 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2024.3453296

Abstract: Movable antenna (MA) provides an innovative way to arrange antennas that can contribute to improved signal quality and more effective interference management. This technology is especially beneficial for co-frequency co-time full-duplex (CCFD) wireless communication, which… read more here.

Keywords: full duplex; time full; movable antenna; wireless communication ... See more keywords

Exceeding Spectral Efficiency Gain of 2 With Co-Frequency Co-Time Full-Duplex in Finite Blocklength Regime

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recommendations! Published in 2025 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2025.3569673

Abstract: This letter begins with a comparative analysis of the error performance between co-frequency co-time full-duplex (CCFD) and half-duplex (HD) systems in the finite blocklength regime for a given bandwidth. It is demonstrated that the CCFD… read more here.

Keywords: full duplex; blocklength regime; spectral efficiency; finite blocklength ... See more keywords

DeFT-AN: Dense Frequency-Time Attentive Network for Multichannel Speech Enhancement

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recommendations! Published in 2022 at "IEEE Signal Processing Letters"

DOI: 10.1109/lsp.2023.3244428

Abstract: In this study, we propose a dense frequency-time attentive network (DeFT-AN) for multichannel speech enhancement. DeFT-AN is a mask estimation network that predicts a complex spectral masking pattern for suppressing the noise and reverberation embedded… read more here.

Keywords: network; time; dense frequency; time attentive ... See more keywords

Complete Framework for Frequency and Time-Domain Performance Assessment of Vibrating Intrinsic Reverberation Chambers

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recommendations! Published in 2020 at "IEEE Transactions on Electromagnetic Compatibility"

DOI: 10.1109/temc.2020.2966741

Abstract: This article presents a complete framework able to characterize the performances in both frequency and time domains of “vibrating intrinsic reverberation chambers” made of a metallized tent of shape continuously changing under the action of… read more here.

Keywords: time; complete framework; frequency; time domain ... See more keywords

Frequency and Time Domain Responses of Cross-Bonded Cables

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recommendations! Published in 2018 at "IEEE Transactions on Power Delivery"

DOI: 10.1109/tpwrd.2017.2734891

Abstract: Cross-bonded cable models are compared against their versions with normal bonding (no bonding) for propagation characteristics, frequency, and time-domain responses. Contrary to no-bonding cables, coaxial modes cannot propagate in cross-bonded cables. Instead, intercore modes propagate,… read more here.

Keywords: frequency time; bonded cables; domain responses; time domain ... See more keywords

Arbitrary shaping of biphoton correlations using near-field frequency-to-time mapping.

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recommendations! Published in 2018 at "Optics letters"

DOI: 10.1364/ol.43.000743

Abstract: Frequency-to-time mapping (FTM) is a technique used to mirror the spectral shape of an optical waveform in the time domain. The regular approach, based on the far-field condition, requires large amounts of dispersion for successful… read more here.

Keywords: field; near field; time mapping; frequency time ... See more keywords