Results 101 to 110 of about 54,708 (232)

Development and Study of Demodulators for Frequency Hopping Spread Spectrum Signals

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2017
Demodulation task is encountered in many practical applications including digital signal processing and digital communications. Demodulation is connected with the communication system performance.
D. I. Kaplun   +7 more
doaj  

Symbol‐Level GRAND‐Assisted Detection for Polar‐Coded Spatial Modulation in MIMO Systems

open access: yesInternational Journal of Communication Systems, Volume 39, Issue 7, 10 May 2026.
This research presents an integrated polar‐coded spatial modulation (PCSM) transceiver scheme for MIMO transmission over Rayleigh fading channels. The proposed architecture employs linear spatial signal processing for antenna and symbol estimation, followed by symbol‐level guessing random additive noise decoding (symbol‐level GRAND)–assisted detection ...
Abhilasha Gautam   +2 more
wiley   +1 more source

Graph Fractional Hilbert Transform: Theory and Application

open access: yesFractal and Fractional
The graph Hilbert transform (GHT) is a key tool in constructing analytic signals and extracting envelope and phase information in graph signal processing.
Daxiang Li, Zhichao Zhang
doaj   +1 more source

Digital demodulation with data subcarrier tracking [PDF]

open access: yes
Digital demodulation with data subcarrier ...
Sanger, D. K.
core   +1 more source

Feature Selection Guideline for Presence/Absence Classification Using a Microwave Doppler Sensor

open access: yesSICE Journal of Control, Measurement, and System Integration, 2017
Aging is a serious issue in our global society. In particular, a smaller working population increases the burden on nurses and other healthcare professionals.
Kazuaki Shiba   +4 more
doaj   +1 more source

AI‐Assisted Self‐Powered Wearable Dual‐Mode Sensor With TENG and Stretchable Optical Fiber for Neurological Disorder Diagnostics

open access: yesAdvanced Science, Volume 13, Issue 27, 13 May 2026.
This manuscript presents the WDMS platform, an AI‐assisted, self‐powered wearable dual‐mode sensor for tele‐neurology. It integrates a contact–separation TENG insole with stretchable polyurethane optical‐fiber strain sensors to synchronously track plantar pressure and lower‐limb muscle deformation.
Tianliang Li   +12 more
wiley   +1 more source

Modeling Noise Transfer in Phase Demodulation Algorithm for Mach-Zehnder and Sagnac Hybrid Fiber Optic Interferometer

open access: yesIEEE Photonics Journal
The Mach-Zehnder and Sagnac hybrid fiber optic interferometer (MZSI) is widely applied in numerous fields and capable of retrieving phase signals with the application of the appropriate demodulation algorithm.
Yang Yan   +6 more
doaj   +1 more source

Dynamic Multifunctional Metasurfaces Based on Passive Cascade Structure

open access: yesElectron, Volume 4, Issue 2, May 2026.
A dynamic multifunctional metasurface is proposed in this paper. Unlike mainstream multifunctional metasurface based on programmable metasurfaces, it consists of two passive metasurfaces, presenting a significant cost advantage. By controlling the displacement, different functions such as beam steering, focusing, and OAM wave generation can be realized
Xiangming Wu   +5 more
wiley   +1 more source

Whale optimization‐based PTS scheme for PAPR reduction in UFMC systems

open access: yesIET Communications
This paper proposes a whale optimization algorithm (WOA)‐based partial transmit sequence (PTS) scheme called WOA‐PTS to reduce the high peak‐to‐average power ratio (PAPR) for universal filtered multi‐carrier (UFMC) systems.
Esmot Ara Tuli   +3 more
doaj   +1 more source

Correlation of ultrasound attenuation with proton density fat fraction across multiple organs in healthy volunteers

open access: yesMedical Physics, Volume 53, Issue 5, May 2026.
Abstract Background Local determination of the attenuation in biological tissues has been the focus of extensive research over the past decades. Its characterization is of major interest for both noninvasive thermal therapies and diagnostic applications. Numerous ultrasound (US)‐based methods have been investigated in recent years to assess attenuation
Adrien Rohfritsch   +7 more
wiley   +1 more source

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