Spread‐spectrum magnetic resonance imaging
Sign Up to like & getrecommendations! Published in 2019 at "Magnetic Resonance in Medicine"
DOI: 10.1002/mrm.27766
Abstract: A novel method for the acceleration of MRI acquisition is proposed that relies on the local modulation of magnetic fields. These local modulations provide additional spatial information for image reconstruction that is used to accelerate… read more here.
Keywords: medicine; spread spectrum; resonance imaging; resonance ... See more keywords
Position and orientation measurement system using spread spectrum sound for greenhouse robots
Sign Up to like & getrecommendations! Published in 2020 at "Biosystems Engineering"
DOI: 10.1016/j.biosystemseng.2020.07.006
Abstract: Position and orientation data are critical for guiding and managing cooperative robot tasks in the greenhouse. Errors, however, associated with current positioning and orientation systems, such as indoor GPS compasses or the sensitivity of magnetic… read more here.
Keywords: position orientation; spread spectrum; system; orientation ... See more keywords
Optimum Combining for Coherent FFH/DS Spread Spectrum Receivers in the Presence of Multi-Tone Jammer
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.2980858
Abstract: Fast Frequency Hopping/Direct Sequence (FFH/DS) hybrid spread spectrum is an effective technique of the communication network for the robot swarms operating in complex electromagnetic environment. It combines the advantages of both Frequency Hopping Spread Spectrum… read more here.
Keywords: coherent ffh; multi tone; frequency; spread ... See more keywords
Compressive Sampling of Color Retinal Image Using Spread Spectrum Fourier Sampling and Total Variant
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3166464
Abstract: This paper proposes compressive sampling (CS) framework for color retinal image (CRI) compression, which relies on spread spectrum Fourier sampling (SSFS) and total variant (TV)-based reconstruction method with three loop of RGB color space, referred… read more here.
Keywords: color; spectrum fourier; retinal image; compressive sampling ... See more keywords
An Overview of Spread Spectrum Time Domain Reflectometry Responses to Photovoltaic Faults
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Journal of Photovoltaics"
DOI: 10.1109/jphotov.2020.2972356
Abstract: Spread spectrum time domain reflectometry (SSTDR) is a broadband electrical reflectometry technique that has been used to detect and locate faults on live electrical systems, including photovoltaic systems. In this article, we evaluate the detectability… read more here.
Keywords: time domain; spectrum time; reflectometry; domain reflectometry ... See more keywords
Spread Spectrum Time Domain Reflectometry With Lumped Elements on Asymmetric Transmission Lines
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2020.2967894
Abstract: Spread spectrum time domain reflectometry (SSTDR) has been traditionally used to detect hard faults (open and short circuit faults) in transmission lines. Prior work has focused on loads at the end of the line with… read more here.
Keywords: time domain; transmission lines; spectrum time; domain reflectometry ... See more keywords
Index Modulated Spread Spectrum OFDM With C-Transform
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2021.3089043
Abstract: This letter proposes an orthogonal frequency division multiplexing (OFDM) scheme that incorporates the index modulation, spread spectrum, and C-transform techniques. The developed OFDM selects a code from a known set to spread data in frequency,… read more here.
Keywords: modulated spread; spectrum ofdm; index modulated; spread spectrum ... See more keywords
Adaptive Measurement and Decoding of Frequency-Hopping Spread Spectrum Signals Based on Knowledge Enhanced Compressed Sensing
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2021.3136752
Abstract: The frequency-hopping spread spectrum (FHSS) signals can be sparsely represented in frequency domain at any given time. In this letter, we render a dictionary and propose non-cooperative adaptive compressed measurement and decoding methods of FHSS… read more here.
Keywords: frequency; frequency hopping; hopping spread; measurement decoding ... See more keywords
Dual-Mode Chirp Spread Spectrum Modulation
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2022.3190564
Abstract: In this letter, we propose dual-mode chirp spread spectrum (DM-CSS) modulation for low-power wide-area networks. DM-CSS is capable of achieving a higher spectral efficiency (SE) relative to its counterparts, such as Long Range (LoRa) modulation.… read more here.
Keywords: modulation; mode chirp; chirp spread; chirp ... See more keywords
Application of Augmented Spread Spectrum Time Domain Reflectometry for Detection and Localization of Soft Faults on a Coaxial Cable
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Aerospace and Electronic Systems"
DOI: 10.1109/taes.2022.3184913
Abstract: Aviation cables are an essential part of aircraft, which transmits signals and power. Aviation cable faults often occur due to drastic changes in temperature and humidity and the effects of vibration. Obvious cable faults, such… read more here.
Keywords: cable; spectrum time; spread spectrum; time domain ... See more keywords
A Study on the Security Levels of Spread-Spectrum Embedding Schemes in the WOA Framework
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Cybernetics"
DOI: 10.1109/tcyb.2017.2735989
Abstract: Security analysis is a very important issue for digital watermarking. Several years ago, according to Kerckhoffs’ principle, the famous four security levels, namely insecurity, key security, subspace security, and stego-security, were defined for spread-spectrum (SS)… read more here.
Keywords: embedding schemes; spread spectrum; security levels; analysis ... See more keywords