Results 81 to 90 of about 12,284 (206)
Efficient Selective Mapping PAPR Reduction Technique
Procedia Computer Science, 2015 AbstractOFDM is a form of multicarrier modulation technique with high spectral efficiency and immunity to interference. One major drawback of OFDM systems is the high peak to average power ratio (PAPR) which leads to power inefficiency and signal distortion with practical power amplifiers used at the transmitter. Selective Mapping (SLM) is a distortion
Mhatre, Kavita, Khot, Uday Pandit
openaire +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
A New Scheme For Reduction Of Peak-To-A Verage Power Ratio In Orthogonal Frequency Division Multiplexing [PDF]
, 2003 Orthogonal Frequency Division Multiplexing (OFDM) is an attractive modulation method for channels with a non-flat frequency response. as it saves the need for complex equalizers. However.
Melad, Ahmed Mustafa H
core
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
Quantifying Potential Energy Efficiency Gain in Green Cellular Wireless Networks
, 2014 Conventional cellular wireless networks were designed with the purpose of providing high throughput for the user and high capacity for the service provider, without any provisions of energy efficiency.
Ayanoglu, Ender, Davaslioglu, Kemal
core +2 more sources
ChemBioChem, Volume 26, Issue 11, June 3, 2025.An affitin derived from the Sac7d scaffold enables the light‐controlled affinity purification of antibodies under physiological conditions, thus overcoming limitations of protein A chromatography. X‐ray crystallographic analysis and affinity measurements reveal complex formation with Fc at the CH2/CH3 junction, similar to protein A/G and FnRn. Combined
Felix Veitl +7 more
wiley +1 more source
Molecular Genetics &Genomic Medicine, Volume 13, Issue 6, June 2025.A novel synonymous variant of PAX2 in monochorionic diamniotic twins with bilateral renal dysplasia was demonstrated to be associated with PAX2‐disorders through the integration of clinical findings and minigene assay results. ABSTRACT Background Paired Box 2 (PAX2, NM_000278.5) encodes paired box gene 2, one of many human homologs of the Drosophila ...
Wencong Yao +8 more
wiley +1 more source
A new PAPR reduction in OFDM systems using PTS combined with APPR for TWTA nonlinear HPA [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2008 In this paper, we propose a new Peak-to-Average Power Ratio (PAPR) reduction technique using a partial transmit sequence (PTS) combined with adaptive peak power reduction (APPR) methods.
Chusit Pradabpet, Kobchai Dejhan
doaj
A New Approach to Iterative Clipping and Filtering PAPR Reduction Scheme for OFDM Systems
IEEE Access, 2018 While achieving reduced/good peak-to-average power (PAPR) in orthogonal frequency division multiplexing (OFDM) systems is attractive, this must not be performed at the expense of the transmitted signal with over-reduced signal power, as it leads to ...
Kelvin Anoh +3 more
doaj +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