Results 11 to 20 of about 88,007,393 (199)

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

open access: yes, 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   +11 more
core   +7 more sources

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

open access: yes, 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

A Crest Factor Reduction Technique for LTE Signals with Target Relaxation in Power Amplifier Linearization

open access: yesSensors, 2022
The signal conditioning treatment to achieve good relation of power with radio-frequency (RF) conversion in conventional transceiver systems require precise baseband models.
José Ricardo Cárdenas-Valdez   +4 more
doaj   +1 more source

Transmit power imbalance reduction method and nonlinear companding transform for beamforming OFDM systems

open access: yesICT Express, 2019
Due to large peak-to-average power ratio (PAPR) at the time domain OFDM signal, various peak signal reduction methods for OFDM systems have been proposed.
Satoshi Taroda   +4 more
doaj   +1 more source

Performance evaluation of PAPR reduction in FBMC system using nonlinear companding transform

open access: yesICT Express, 2019
Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is one of the best waveforms used in 5G communications. The FBMC is a multicarrier modulation system (MCM) which suffers from high peak to average power ratio (PAPR) causing
Imad A. Shaheen   +3 more
doaj   +1 more source

Analysis of Hybrid PAPR Reduction Methods of OFDM Signal for HPA Models in Wireless Communications

open access: yesIEEE Access, 2020
Orthogonal Frequency Division Multiplexing (OFDM) suffers from a high Peak-to-Average Power Ratio (PAPR). Designing a High Power Amplifier (HPA) with high PAPR is not a wise technique as it roots the amplifier to operate in a non-linear region which is ...
Sravanti Thota   +2 more
doaj   +1 more source

A Novel Clipping-Based Method to Reduce Peak-To-Average Power Ratio of OFDM Signals

open access: yesInformation, 2020
Orthogonal frequency division multiplexing (OFDM) is a widely used technology for wireless broadband communications. However, it also suffers from some drawbacks.
Bo Tang   +3 more
doaj   +1 more source

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

open access: yes, 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   +7 more
core   +1 more source

Research on Low-complexity PAPR Reduction Algorithm in Radar-communication Integrated System [PDF]

open access: yesJisuanji 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

Two novel nonlinear companding schemes with iterative receiver to reduce PAPR in multi-carrier modulation systems [PDF]

open access: yes, 2006
Companding transform is an efficient and simple method to reduce the Peak-to-Average Power Ratio (PAPR) for Multi-Carrier Modulation (MCM) systems.
Guo, P, Yao, W, Qu, D, Song, Y, Jiang, T
core   +1 more source

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