Results 1 to 10 of about 1,764 (115)

A Hybrid PAPR Reduction Scheme in OFDM-IM Using Phase Rotation Factors and Dither Signals on Partial Sub-Carriers [PDF]

open access: yesEntropy, 2022
As a multi-carrier modulation technique, a high peak-to-average power ratio (PAPR) is a common issue suffered by orthogonal frequency division multiplexing with index modulation (OFDM-IM) due to its system structure. High PAPR may cause signal distortion,
Si-Yu Zhang, Hui Zheng
doaj   +2 more sources

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   +3 more sources

On PAPR Reduction in Pilot-Assisted Optical OFDM Communication Systems

open access: yesIEEE Access, 2017
This paper presents a novel theoretical characterization of the pilot-assisted (PA) technique proposed for peak-to-average-power-ratio (PAPR) reduction in optical orthogonal frequency division multiplexing (O-OFDM).
Funmilayo B. Offiong   +2 more
doaj   +3 more sources

CLIPPING TECHNIQUES FOR PAPR REDUCTION IN FBMC/OQAM SYSTEM OVER DOUBLY-SELECTIVE CHANNELS

open access: yesJournal of Engineering and Sustainable Development, 2021
One of the major disadvantages of Filter Bank Multicarrier (FBMC) is high Peak-to-Average Power Ratio (PAPR) of transmitted signal. As a result, nonlinear power amplifier (PA) properties, considerable out-of-band and the in-band distortion types take ...
Noor Q. Lateef, Fadhil S. Hasan
doaj   +3 more sources

A Novel Hybrid Precoding-Companding Technique for Peak-to-Average Power Ratio Reduction in 5G and beyond

open access: yesSensors, 2021
Several high-speed wireless systems use Orthogonal Frequency Division Multiplexing (OFDM) due to its advantages. 5G has adopted OFDM and is expected to be considered beyond 5G (B5G).
Mohamed Mounir   +4 more
doaj   +1 more source

AN IMPROVED PAPR REDUCTION TECHNIQUE FOR UNIVERSAL FILTER MULTI-CARRIER MODULATION [PDF]

open access: yesActa Electrotechnica et Informatica, 2018
Universal Filter Multi-Carrier (UFMC) modulation is a potential candidate for next generation wireless communication due to its advantages like better sub carrier separation and less complexity.
Pooja RANI, Silki BAGHLA, Himanshu MONGA
doaj   +1 more source

Low-Complexity Selective Mapping Methods for Multicarrier Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2020
Multicarrier faster-than-Nyquist (MFTN) signaling is a high spectral efficiency transmission scheme, which is promising in the future communication. One of the major problems of MFTN signaling is high peak-to-average power ratio (PAPR).
Biao Cai, Aijun Liu, Xiaohu Liang
doaj   +1 more source

PAPR reduction technique for FBMC based visible light communication systems

open access: yesIET Communications, 2022
One of the critical challenges in multicarrier‐based systems is peak to average power ratio (PAPR). Recently, Filter Bank Multicarrier (FBMC) is proved to be a promising candidate that can replace the traditional orthogonal multiplexing division (OFDM ...
Gerges M. Salama   +7 more
doaj   +1 more source

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

open access: yesEngineering 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

Performance Analysis of the Two-Piecewise Linear Companding Technique on Filtered-OFDM Systems

open access: yesIEEE Access, 2021
Filtered orthogonal frequency division multiplexing (F-OFDM) is one of the most prominent waveform candidates when it comes to fifth-generation (5G) wireless communication and beyond.
Mishal Al-Gharabally   +2 more
doaj   +1 more source

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