Results 11 to 20 of about 11,641 (207)

PAPR Distribution Analysis at the Output of Nonlinear PAPR Reducers

Journal of Signal and Information Processing, 2012
Nonlinear PAPR reducers, such as clipping and companding techniques, are some simple methods used to reduce the Peak-to-Average Power Ratio (PAPR). In this paper, assuming that the baseband OFDM signal is characterized as a bandlimited complex Gaussian process, we investigate the PAPR distribution of an OFDM signal when it is passed through a nonlinear
Guel, Désiré, Palicot, Jacques
openaire   +5 more sources

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

, 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   +8 more sources

A Novel PAPR in OTFS Systems Through ISSA-PTS and ISPR Techniques

IEEE Access
In 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, Amira A. Mohamed, Aziza I. Hussein, M. Mourad Mabrook   +3 more
doaj   +2 more sources

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   +4 more sources

The PAPR and Simple PAPR Reduction of the 2D Spreading Based Communication Systems

Radioengineering, 2010
This paper deals with Peak to Average Power Ra- tio (PAPR) characteristics and the theory of variable spread- ing factor orthogonal frequency and code division multiplex- ing (VSF-OFCDM) systems. Comparison and evaluation of PAPR of VSF-OFCDM systems with various 2D spreading factors (SF) are done in time and in frequency domain.
Blumenstein, Jiri, Fedra, Zbynek
openaire   +3 more sources

Intelligent genetic algorithms for next-generation broadband multi-carrier CDMA wireless networks [PDF]

, 2008
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This dissertation proposes a novel intelligent system architecture for next-generation broadband multi-carrier CDMA wireless networks.
Zhang, Yang
core   +7 more sources

ALTERNATIVE LOW-COMPLEXITY APPROACHES FOR PAPR REDUCTION IN FBMC-OQAM SYSTEMS [PDF]

Carpathian Journal of Electrical Engineering, 2023
Recently, the Filter Bank Multi-Carrier with Offset-QAM modulation (FBMC-OQAM) system proved to be a strong candidate wave that can replace the conventional OFDM (Orthogonal Frequency Division Multiplexing) through several properties in future mobile ...
Salima SENHADJI, Fethi Tarik BENDIMERAD
doaj  

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

Compatibility and efficacy of vaporised hydrogen peroxide technology to decontaminate reusable personal protective equipment

Cogent Engineering, 2022
This study aimed to evaluate VHP as a decontamination method for decontaminating reusable PAPR; determine if PAPR is compatible with VHP; and determine how long it takes for hydrogen peroxide to off-gas for the mask to be safe for reuse.
Daniela Rondinone, Tautvydas Karitonas, Enrico Allegra   +2 more
doaj   +1 more source

Proposed Combined PTS with Clipping and Filtering Technique for PAPR Reduction in OFDM System [PDF]

Engineering and Technology Journal, 2012
One of the major drawbacks of OFDM is high Peak-to-Average Power Ratio(PAPR) which can result in poor power efficiency and serious distortion in the transmitter amplifier.
Ghanim Abd AL Kareem
doaj   +1 more source