Results 41 to 50 of about 1,895 (182)

Fractional Fourier Domain PAPR Reduction

GLOBECOM 2025 - 2025 IEEE Global Communications Conference
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 ...
Yewen Cao, Yulin Shao, Rose Qingyang Hu
openaire   +3 more sources

Thermal Transformations of Platinum‐Heterobimetallic Iminodiacetate Dithiocarbamates Comprising Group 2 and Group 12 Metal Ions

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 13, 1 September 2026.
The heterobimetallic amino‐acid dithiocarbamates [M(H2O)n]2[Pt(L)2] (M = Ca, Sr, Ba, Zn, Cd; L = N‐dithioato‐iminodiacetate) are thermally dehydrated to their respective anhydrates M2[Pt(L)2], which further yield metal sulfate or oxide particles decorated with finely distributed metallic platinum upon combustion in air. The thermal decomposition of the
Sebastian Mangelsen, Jonas Jacobs, Aroua Aouina, Antje Wermann, Verena Müller, Benjamin Kintzel, Phil Köhler   +6 more
wiley   +1 more source

Optimization of Tone Reservation-Based PAPR Reduction for OFDM Systems [PDF]

Radioengineering, 2017
A major drawback of orthogonal frequency division multiplexing (OFDM) is its high peak-to-average power ratio (PAPR). Tone reservation (TR) is one of the numerous methods for reducing the PAPR.
B. Horvath, B. Botlik
doaj  

PAPR Reduction Scheme for OFDM

Procedia Technology, 2012
AbstractThis paper focused on peak to average power ratio (PAPR) reduction scheme for OFDM system. OFDM has several properties which make it an attractive modulation scheme for high speed transmission. the main draw back of OFDM is high PAPR. The high PAPR causes the interference and degraded the performance of the system while OFDM signal pass through
Bhad, Sandeep, Gulhane, Pankaj, Hiwale, A.S.   +2 more
openaire   +1 more source

PAPR Reduction in WiMAX System [PDF]

, 2013
Broadband Wireless Access (BWA) has emerged as a promising solution for last mile access technology to provide high speed internet access in the residential as well as small and medium sized enterprise sectors. At this moment, cable and DSL technologies are providing broadband service in these sectors.
Mona Shokair, Hifzalla Sakr
openaire   +1 more source

In Vitro Effects of Anaesthetic Compounds on a Panel of Solid Tumour Cell Lines—An Exploratory Study

Journal of Cellular and Molecular Medicine, Volume 30, Issue 18, September 2026.
ABSTRACT Anaesthetic agents are essential for surgical procedures, yet their potential role on tumour cell biology remains incompletely understood. Emerging evidence suggests that these compounds can act both as protumor and antitumor agents, influencing cellular processes such as proliferation, migration and cell death mechanisms.
Olga Grajdieru, Alexandru Cristian Sabo, Adrian Bogdan Tigu, Andrei Ivancuta, Cristian Silviu Moldovan, Andrada Uhl, Miruna Cristina Ungurenasu, Andrada‐Ioana Balmez, Ada Moisescu, Simina Pîrv, Madalina Nistor, Ximena‐Maria Muresan, Diana Cenariu, Ciprian Tomuleasa, Catalin Constantinescu   +14 more
wiley   +1 more source

Base Station-Driven PAPR Reduction Method Utilizing Null Space for MIMO-OFDM Systems With Amplify-and-Forward Relaying

IEEE Access
This paper proposes a peak-to-average power ratio (PAPR) reduction method that utilizes the null space in a multiple-input multiple-output (MIMO) channel for downlink MIMO-orthogonal frequency division multiplexing (OFDM) signals with multiple-antenna ...
Asuka Kakehashi, Takanori Hara, Kenichi Higuchi   +2 more
doaj   +1 more source

Synergistic Enhancement of Modified‐PVDF Humidity Sensitivity via Chemical Adsorption‐Ionic Conductivity and its Application in Intelligent Powered Air‐Purifying Respirator

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 3, May 2026.
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, Hongwei Liu, Xianjie Xu, Xinkai Qi, Danhong Gao, Hanling Deng, Dusong Hou, Qianyao Lu, Lei Zhu, Sheng Huang   +9 more
wiley   +1 more source

A Polar-Coded PAPR Reduction Scheme Based On Hybrid Index Modulation

IEEE Open Journal of the Communications Society
Orthogonal frequency division multiplexing with index modulation (OFDM-IM) is a promising technique for next-generation wireless communications due to its superior error performance and flexibility.
Si-Yu Zhang, Xinwei Yue, Behnam Shahrrava, Yuexia Zhang, Gongpu Wang   +4 more
doaj   +1 more source

New SLM scheme to reduce the PAPR of OFDM signals using a genetic algorithm

ICT Express, 2016
Selected mapping (SLM) is a popular peak-to-average power ratio (PAPR) reduction technique suitable for use in orthogonal frequency division multiplexing (OFDM) systems as it achieves good PAPR reduction performance without signal distortion.
Insoo Sohn
doaj   +1 more source