Results 71 to 80 of about 12,284 (206)

Human tissue kallikrein 14 induces the expression of IL‐6, IL‐8, and CXCL1 in skin fibroblasts through protease‐activated receptor 1 signaling

The FEBS Journal, Volume 292, Issue 21, Page 5659-5675, November 2025.
Human tissue kallikrein 14 (KLK14), a skin protease, may mediate paracrine signaling in wound healing. KLK14 released by epithelial cells activates fibroblasts via PAR‐1 activation, inducing IL‐6, IL‐8, and CXCL1 expression. These cytokines in turn promote keratinocyte proliferation and migration, resulting in wound closure.
Laura Sasiadek, Ewa Bielecka, Katherine Falkowski, Magdalena Kulczycka, Grzegorz Bereta, Anna Maksylewicz, Natalia Zubrzycka, Ewelina Dobosz, Joanna Kozieł, Justyna Drukała, Maciej Lech, Natalia Horbach, Marcin Poręba, Klaudia Brix, Grzegorz Dubin, Jan Potempa, Tomasz Kantyka   +16 more
wiley   +1 more source

Deep Learning Integration in PAPR Reduction in 5G Filter Bank Multicarrier Systems [PDF]

Iranian Journal of Electrical and Electronic Engineering
High peak-to-average power ratio (PAPR) has been a major drawback of Filter bank Multicarrier (FBMC) in the 5G system. This research aims to calculate the PAPR reduction associated with the FBMC system.
Mohamed Hussien Moharam, AYA W. wafik
doaj  

Analysis of Alternative Metrics for the PAPR Problem in OFDM Transmission

, 2011
The effective PAPR of the transmit signal is the standard metric to capture the effect of nonlinear distortion in OFDM transmission. A common rule of thumb is the log$(N)$ barrier where $N$ is the number of subcarriers which has been theoretically ...
Wunder, Gerhard
core   +1 more source

Digital Predistorter Implementation for Wideband Power Amplifiers in New Generation Wireless Systems Based on a Low‐Complexity Volterra Series Model

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 38, Issue 5, September/October 2025.
ABSTRACT In this article, we provide a novel, expanded, and adapted pruning approach for the Simplified Volterra Series (SVS) model that makes it applicable to a wider range of Power Amplifiers (PAs). The proposed Modified SVS (MSVS) model is then applied in a Digital Predistortion (DPD) architecture to linearize a 25 W Gallium Nitride (GaN) RF PA.
Haithem Rezgui, Ghalid Abib, Fatma Rouissi, Adel Ghazel   +3 more
wiley   +1 more source

A Joint Linearization/Companding Approach for Improving a CO-OFDM Transmitter

, 2015
International audience—The joint use of peak-to-average power ratio (PAPR) reduction and linearization via digital predistortion is investigated in this letter, with the view to improve the performances of coherent optical OFDM (CO-OFDM) systems ...
Azou, Stéphane, Bejan, Serban, Diouf, Cherif, Morel, Pascal, Sharaiha, Ammar, Tanguy, Noël, Telescu, Mihai   +6 more
core   +3 more sources

Fractional Fourier Domain PAPR Reduction

High peak-to-average power ratio (PAPR) has long posed a challenge for multi-carrier systems, impacting amplifier efficiency and overall system performance. This paper introduces dynamic angle fractional Fourier division multiplexing (DA-FrFDM), an innovative multi-carrier system that effectively reduces PAPR for both QAM and Gaussian signals with ...
Cao, Yewen, Shao, Yulin, Hu, Rose Qingyang   +2 more
openaire   +2 more sources

New PAPR Reduction Method for Spatial Modulation [PDF]

The Journal of Korea Information and Communications Society, 2014
In this paper, a new peak-to-average power ratio (PAPR) reduction method for spatial modulation(SM) is presented. By using the matrix with all non-zero elements to precode the signals before transmitting, the transmit power is scattered over all transmit antennas for achieving the goal of PAPR reduction.
Yulong Shang, Hojun Kim, Hongjoong Kim, Taejin Jung   +3 more
openaire   +1 more source

Creating the 5A Nursing Response Model for the Emerging Pandemic: A Qualitative, Theory‐Generating Study

Journal of Advanced Nursing, Volume 81, Issue 9, Page 6011-6021, September 2025.
ABSTRACT Aim The aim of this qualitative exploratory study aimed was to explore how nurses experienced and responded to the COVID‐19 pandemic crisis in clinical settings to develop a response model. Design Focus group interviews. Methods Thirteen focus group interviews (n = 50) with nurses and nurse leaders practicing in diverse clinical settings were ...
Dahae Rim, Hyunsook Shin, Hyejin Jeon, Young‐Me Lee, Soonyoung Shon, Kaka Shim, Kyung Mi Kim, Shannon D. Simonovich   +7 more
wiley   +1 more source

Research on PAPR reduction algorithm based on CWGAN-SLM for multi-wavelet OFDM system

Tongxin xuebao, 2023
In order to meet the demand for low peak to average ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) technology in the future 6G satellite-ground integrated system, an algorithm combining selective mapping (SLM) algorithm and multi ...
Guang YANG, Zhaoyang WU, Min NIE, Xiaohong YAN, Fan JIANG   +4 more
doaj   +2 more sources

Tractable Resource Management with Uplink Decoupled Millimeter-Wave Overlay in Ultra-Dense Cellular Networks

, 2016
The forthcoming 5G cellular network is expected to overlay millimeter-wave (mmW) transmissions with the incumbent micro-wave ({\mu}W) architecture. The overall mm-{\mu}W resource management should therefore harmonize with each other.
Kim, Seong-Lyun, Park, Jihong, Zander, Jens   +2 more
core   +1 more source