Results 41 to 50 of about 12,284 (206)
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.The study developed a PVDF/SiO2 humidity sensor with superhydrophobic properties and integrated the humidity sensor into the intelligent powered air‐purifying respirator (IPAPR) for breath monitoring. Coupled with the Gated Recurrent Unit (GRU) machine learning prediction algorithm, it enables feedforward control of the fan to achieve respiratory ...
Xinjian He +9 more
wiley +1 more source
Open Mathematics, 2016 A major drawback of orthogonal frequency division multiplexing (OFDM) signals is the high value of peak to average power ratio (PAPR). Partial transmit sequences (PTS) is a popular PAPR reduction method with good PAPR reduction performance, but its ...
Goudos Sotirios K.
doaj +1 more source
Research on Low-complexity PAPR Reduction Algorithm in Radar-communication Integrated System [PDF]
Jisuanji gongcheng, 2016 This paper proposes a low-complexity Peak to Average Power Ratio(PAPR) reduction algorithm to deal with the high PAPR of radar-communication integrated system of Orthogonal Frequency Division Multiplexing(OFDM) based on Fractional Fourier Transform(FRFT).
CHEN Kangrun,LIU Yang,ZHANG Wei
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Existence of codes with constant PMEPR and related design [PDF]
, 2004 Recently, several coding methods have been proposed to reduce the high peak-to-mean envelope ratio (PMEPR) of multicarrier signals. It has also been shown that with probability one, the PMEPR of any random codeword chosen from a symmetric quadrature ...
Hassibi, Babak, Sharif, Masoud
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Advanced Photonics Research, Volume 7, Issue 3, March 2026.This article proposes a deep learning (DL) approach for modeling and optimizing frequency‐doubled radio‐over‐fiber links. By collectively replacing traditional components with DL model, accurate system evaluation is achieved. Moreover, through an end‐to‐end architecture, performance optimization is accomplished.
Difei Shi +3 more
wiley +1 more source
PAPR-Aware Massive MIMO-OFDM Downlink
IEEE Access, 2019 We investigate the peak-to-average power ratio (PAPR) reduction problem in orthogonal frequency-division multiplexing-based massive multi-user (MU) multiple-input multiple-output (MIMO) downlink systems.
Rafik Zayani +2 more
doaj +1 more source
Flexible Multi-Group Single-Carrier Modulation: Optimal Subcarrier Grouping and Rate Maximization
, 2017 Orthogonal frequency division multiplexing (OFDM) and single-carrier frequency domain equalization (SC-FDE) are two commonly adopted modulation schemes for frequency-selective channels. Compared to SC-FDE, OFDM generally achieves higher data rate, but at
Lie, Joni Polili +3 more
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Clinical Case Reports, Volume 14, Issue 2, February 2026.ABSTRACT Papillorenal syndrome (PAPRS), or renal coloboma syndrome, is a rare autosomal dominant disorder caused by PAX2 mutations. It classically manifests with renal hypodysplasia and optic nerve anomalies. However, recent literature suggests an expanding phenotypic spectrum.
Nadira Sultana +2 more
wiley +1 more source
Peak to Average Power Ratio Reduction and Bit Error Rate Improvement in Wireless Orthogonal Frequency Division Multiplexing Communication Systems [PDF]
, 2009 Orthogonal frequency division multiplexing (OFDM) offers high data rate transmission with high spectral efficiency, immunity to multipath fading, and simple implementation using fast Fourier transform (FFT).
Al-Azzo, Wisam Fahmi
core
PAPR Reduction in PAM-DMT based WDM VLC
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), 2022 Visible light communication (VLC) can achieve high data rate transmission with discrete multitone (DMT) systems. A DMT variant is pulse-amplitude-modulated discrete multitone modulation (PAM-DMT) which offers an energy-efficient modulation solution for VLC. However, similar to other DMT modulation techniques, PAM-DMT suffers from a high peak-to-average
Alrakah, Hussien T. +3 more
openaire +2 more sources