Results 71 to 80 of about 29,940 (236)
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 +7 more
wiley +1 more source
A Novel PAPR in OTFS Systems Through ISSA-PTS and ISPR Techniques
IEEE AccessIn modern communication systems, managing the Peak-to-Average Power Ratio (PAPR) remains a critical challenge, particularly in Orthogonal Time-Frequency Space (OTFS) systems.
Gerges Mansour Salama +3 more
doaj +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 reducing PAPR of QAM-OFDM radar-communication integration sharing signal
The Journal of Engineering, 2019 In order to solve the problem of high peak-to-average power ratio (PAPR) of the sharing signal for radar-communication integration based on quadrature amplitude modulation-orthogonal frequency division multiplexing modulation, according to the ...
Yongjun Yang +4 more
doaj +1 more source
Performance Analysis of MIMO Links With Non‐Isolated Active Antenna Arrays
Microwave and Optical Technology Letters, Volume 67, Issue 8, August 2025.ABSTRACT In this paper, we analyze the performance of non‐isolated active arrays in a multiple‐input multiple‐output (MIMO) system. When ferromagnetic‐type isolators are removed in the transmitter (Tx) chains, the antenna mutual coupling will dynamically change the load impedance seen by the power amplifiers (PAs) at their outputs, which subsequently ...
Jiayu Hou +3 more
wiley +1 more source
PAPR reduction technique for FBMC based visible light communication systems
IET Communications, 2022 One of the critical challenges in multicarrier‐based systems is peak to average power ratio (PAPR). Recently, Filter Bank Multicarrier (FBMC) is proved to be a promising candidate that can replace the traditional orthogonal multiplexing division (OFDM ...
Gerges M. Salama +7 more
doaj +1 more source
Square Complex Orthogonal Designs with Low PAPR and Signaling Complexity
, 2008 Space-Time Block Codes from square complex orthogonal designs (SCOD) have been extensively studied and most of the existing SCODs contain large number of zero.
Das, Smarajit, Rajan, B. Sundar
core +1 more source
PAPR reduction of OFDM through pilot shifting [PDF]
2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2015 6 pages, Proc. of 26th IEEE International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC), Hong Kong, Aug-September 2015, pp.
Hossain, Md. Sakir, Shimamura, Tetsuya
openaire +2 more sources
Experiences of Person‐Centred Care Among Nurses in COVID‐19 Wards: A Qualitative Study
Nursing Open, Volume 12, Issue 8, August 2025.ABSTRACT Aim While there is extensive research on nurses' experiences in caring for COVID‐19 patients, studies focusing on person‐centred care in this context remain limited. This study aimed to obtain a thorough understanding of the meaning and essence of person‐centred care experienced by nurses in COVID‐19 wards in South Korea.
Myoungsuk Kim +2 more
wiley +1 more source
ICT Express, 2020 Orthogonal frequency division multiplexing (OFDM) has been proposed to achieve high data rate transmission in wireless communications. The OFDM system usually suffers from the high envelope fluctuations called peak-to-average power ratio (PAPR). The high
Ghanbar Azarnia +2 more
doaj +1 more source