Results 21 to 30 of about 1,797 (181)

Adaptive Interference Restriction Among Spatial Streams Based on Difference in Singular Values for PAPR Reduction in Uplink Eigenmode Massive MIMO Transmission

IEEE Access
In this paper, we propose two peak-to-average power ratio (PAPR) reduction methods that apply adaptive in-band interference restriction based on singular value differences between spatial channels in uplink eigenmode massive multiple-input multiple ...
Yuta Abekura, Takanori Hara, Satoshi Suyama, Satoshi Nagata, Kenichi Higuchi   +4 more
doaj   +1 more source

Efficient Parallel PAPR Reduction Method Using Null-Constrained Peak Cancellation Signal for Massive MIMO-OFDM Systems

IEEE Open Journal of the Communications Society
In this paper, we propose new methods for reducing the peak-to-average power ratio (PAPR) for downlink massive multiple-input multiple-output (MIMO) along with orthogonal frequency division multiplexing. We develop the PAPR reduction method based on peak
Jun Saito, Takanori Hara, Kenichi Higuchi   +2 more
doaj   +1 more source

The Impact of OFDM-IM System Parameters on the Performance of the SLM PAPR Reduction Technique

NTU Journal of Engineering and Technology
Orthogonal Frequency Division Multiplexing with Index Modulation (OFDM-IM) is an effective communication technology that utilizes subcarrier indices to transmit information in addition to the information traditionally modulated on active subcarriers ...
Zainab Mohammed Abdulkareem, Mahdi Fadil Khaleel, Mahmoud Shakir Wahhab   +2 more
doaj   +1 more source

PAPR reduction in LTE network using both peak windowing and clipping techniques

Journal of Electrical Systems and Information Technology, 2019
Multicarrier technique orthogonal frequency division multiplexing (OFDM) modulation is a solution to provide high-speed and secured data transmission requirement in 4G technologies. Peak-to-average power ratio (PAPR) is one major drawback in OFDM system.
Richard Musabe, Mafrebo B. Lionel, Victoire Mugongo Ushindi, Mugisha Atupenda, James Ntaganda, Gaurav Bajpai   +5 more
doaj   +1 more source

Reducing PAPR of OFDM signals using a tone reservation method based on $$\ell_{\infty }$$ ℓ ∞ -norm minimization

Journal of Electrical Systems and Information Technology, 2022
Orthogonal frequency division multiplexing (OFDM) continues to be the most preferred signal-multiplexing scheme for high-speed data communication. However, OFDM signals are known to have the problem of high peak-to-average power ratio (PAPR), especially ...
Stephen Kiambi, Elijah Mwangi, George Kamucha   +2 more
doaj   +1 more source

Novel PAPR Reduction Algorithms for OFDM Signals

IEEE Access, 2022
This paper proposes two efficient peak-to-average power ratio (PAPR) reduction algorithms for OFDM signals based on the principle of tone reservation. The first algorithm is performed in the time domain, whereas the second algorithm is a new clipping-and-filtering method. Both algorithms consist of two stages.
Quang Nguyen, The Khai Nguyen, Ha H. Nguyen 0001, Brian Berscheid   +3 more
openaire   +2 more sources

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 novel generalized oppositional biogeography-based optimization algorithm: application to peak to average power ratio reduction in OFDM systems

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
doaj   +1 more source

From the Modeling of Experiments to the Ab Initio Prediction of Rate Constants: Statistical Rate Theory for a Quantitative Understanding of Gas‐Phase Ion Chemistry

ChemPhysChem, Volume 27, Issue 8, 28 April 2026.
For directly comparing experimental results on gas‐phase ion reactions with the predictions from quantum chemical calculations, the latter must first be converted into rate constants. This review addresses the question of whether current methods of statistical rate theory can accomplish this task reliably. Statistical rate theory has long been used for
Thomas Auth, Konrad Koszinowski
wiley   +1 more source