Results 21 to 30 of about 4,829 (219)

Peak to average power ratio reduction techniques based on chirp selection for single and multi‐user orthogonal chirp division multiplexing system

IET Signal Processing, 2023
This article deals with peak to average power (PAPR) reduction in a single and multi‐user orthogonal chirp division multiplexing (OCDM) context. Two methods for PAPR reduction based on the selection of the frequency variation (up or down) of the chirps ...
Vincent Savaux
doaj   +1 more source

Compressive sensing based PAPR reduction in OFDM systems: Modified orthogonal matching pursuit approach

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, Abbas Ali Sharifi, Hojjat Emami   +2 more
doaj   +1 more source

Analysis and Comparison of PAPR Reduction Techniques in OFDM Systems [PDF]

Journal of Electrical and Computer Engineering Innovations, 2015
The destructive impact of fading environments and also bandwidth limitations are two main challenges which communication is dealing with them. These challenges can affect on the growth of wireless communication and even cause reliable communications and ...
M.B. Noori Shirazi, A. Golestani, H. Ahmadian Yazdi, A. Habibi Daronkola   +3 more
doaj   +1 more source

Time Reduction for SLM OFDM PAPR Based on Adaptive Genetic Algorithm in 5G IoT Networks

Sensors, 2023
In this paper, a new peak average power and time reduction (PAPTR) based on the adaptive genetic algorithm (AGA) strategy is used in order to improve both the time reduction and PAPR value reduction for the SLM OFDM and the conventional genetic algorithm
Esam A. A. Hagras, Sameh F. Desouky, Saad Aldosary, Haitham Khaled, Tarek M. Hassan   +4 more
doaj   +1 more source

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

An intelligent genetic algorithm for PAPR reduction in a multi-carrier CDMA wireless system

, 2008
— A novel intelligent genetic algorithm (GA), called Minimum Distance guided GA (MDGA) is proposed for peak-average-power ratio (PAPR) reduction based on partial transmit sequence (PTS) scheme in a synchronous Multi-Carrier Code Division Multiple Access (
Chen, HH, Song, Y., Yang Zhang, Yonghua Song, Qiang Ni, Ni, Q, Ni, Q., Zhang, Y, Song, Y, Chen, H.H., Hsiao-Hwa Chen, Zhang, Y.   +11 more
core   +1 more source

Spreading Code Design for a MC-CDMA Based GNSS Pilot Signal

, 2010
MC-CDMA can represent an alternative to classical DS-CDMA for the design of GNSS ranging signals. A first requirement MC-CDMA signals must fulfill is that their generation on a satellite payload be feasible.
Meurer, Michael, Seco-Granados, Gonzalo, Vergara, Mariano, Felix Antreich, Gonzalo Seco-Granados, Antreich, Felix, Mariano Vergara, Michael Meurer   +7 more
core   +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

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

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