Results 41 to 50 of about 25,708 (247)

A new PAPR reduction in OFDM systems using PTS combined with APPR for TWTA nonlinear HPA [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2008
In this paper, we propose a new Peak-to-Average Power Ratio (PAPR) reduction technique using a partial transmit sequence (PTS) combined with adaptive peak power reduction (APPR) methods.
Chusit Pradabpet, Kobchai Dejhan
doaj  

Performance and Implementation Evaluation of TR PAPR Reduction Methods for DVB-T2

open access: yesInternational Journal of Digital Multimedia Broadcasting, 2010
High Peak to Average Power Ratio (PAPR) is a critical issue in multicarrier communication systems using Orthogonal Frequency Division Multiplexing (OFDM), as in the Second Generation Terrestrial Digital Video Broadcasting (DVB-T2) system.
Mohamad Mroué   +4 more
doaj   +1 more source

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

open access: yesICT 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   +2 more
doaj   +1 more source

Distributions of Upper PAPR and Lower PAPR of OFDM Signals in Visible Light Communications

open access: yes, 2014
Orthogonal frequency-division multiplexing (OFDM) in visible light communications (VLC) inherits the disadvantage of high peak-to-average power ratio (PAPR) from OFDM in radio frequency (RF) communications.
Baxley, Robert J.   +2 more
core   +1 more source

Closed-form Approximations of the PAPR Distribution for Multi-Carrier Modulation Systems [PDF]

open access: yes, 2014
International audienceThe theoretical analysis of the Peak-to-Average Power Ratio (PAPR) distribution for an Orthogonal Frequency Division Multiplexing (OFDM) system, depends on the particular waveform considered in the modulation system.
Chafii, Marwa   +2 more
core   +3 more sources

A Robust Peak-to-Average Power Ratio Reduction Scheme by Inserting Dummy Signals with Enhanced Partial Transmit Sequence in OFDM Systems. [PDF]

open access: yes, 2013
Peak-to-average power ratio (PAPR) is one of the main drawbacks in orthogonal frequency division multiplexing (OFDM) systems. High PAPR forces the power amplifier to back off in order to operate in its linear region, which degrades the power efficiency ...
Borhanuddin Mohd Ali   +14 more
core   +1 more source

A HYBRID TECHNIQUE FOR PAPR REDUCTION OF OFDM USING DHT PRECODING WITH PIECEWISE LINEAR COMPANDING [PDF]

open access: yesICTACT Journal on Communication Technology, 2016
Orthogonal Frequency Division Multiplexing (OFDM) is a fascinating approach for wireless communication applications which require huge amount of data rates.
Thammana Ajay, K. Murali Krishna
doaj  

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

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

MIMO Dual-Functional Radar-Communication Waveform Design With Peak Average Power Ratio Constraint

open access: yesIEEE Access, 2021
In this paper, novel Dual-Functional Radar-Communication (DFRC) waveforms with peak average power ratio (PAPR) constraint are designed, which are under the multiple-input multiple-output (MIMO) radar-communication system.
Yujiu Zhao   +4 more
semanticscholar   +1 more source

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