Results 21 to 30 of about 29,940 (236)

Evaluation of Clipping and Filtering-Based PAPR Reduction in OFDM System

open access: yesJournal of Electrical, Electronics and Informatics, 2017
This paper investigates clipping and filtering techniques in reducing peak average power ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) system.
N. M. A. E. D. Wirastuti   +3 more
doaj   +1 more source

Distributions of upper PAPR and lower PAPR of OFDM signals in visible light communications [PDF]

open access: yes2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2014
acceptted by IEEE ICASSP 2014.
Yu, Zhenhua   +2 more
openaire   +2 more sources

Performance Investigation of Peak Shrinking and Interpolating the PAPR Reduction Technique for LTE-Advance and 5G Signals

open access: yesInformation, 2019
Orthogonal frequency division multiplexing (OFDM) has become an indispensable part of waveform generation in wideband digital communication since its first appearance in digital audio broadcasting (DAB) in Europe in 1980s, and it is indeed in use. As has
Somayeh Mohammady   +3 more
doaj   +1 more source

Peak to average power ratio based spatial spectrum sensing for cognitive radio systems [PDF]

open access: yes, 2017
The recent convergence of wireless standards for incorporation of spatial dimension in wireless systems has made spatial spectrum sensing based on Peak to Average Power Ratio (PAPR) of the received signal, a promising approach.
Ghafoor, Abdul   +2 more
core   +1 more source

PAPR Distribution Analysis at the Output of Nonlinear PAPR Reducers

open access: yesJournal 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   +4 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   +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, Jiang, T, Qu, D, Song, Y, Yao, W
core   +1 more source

Safety Recommendations for Evaluation and Surgery of the Head and Neck During the COVID-19 Pandemic [PDF]

open access: yes, 2020
Importance The rapidly expanding novel coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2, has challenged the medical community to an unprecedented degree.
Chinn, Steven B.   +13 more
core   +1 more source

Analysis of GFDM as a robust 5G communication technique in noisy environment [PDF]

open access: yes, 2020
One of the challenges of modulation techniques used in Fifth-Generation (5G) is their robustness in noisy environment. Conventional Orthogonal Frequency Division Multiplexing (OFDM) cannot be considered as a 5G waveform in its original form because of ...
Ayaz, Ferheen, Ayaz, Saqib
core   +1 more source

A Simplified Scheme of Estimation and Cancellation of Companding Noise for Companded Multicarrier Transmission Systems [PDF]

open access: yes, 2015
Nonlinear companding transform is an efficient method to reduce the high peak-to-average power ratio (PAPR) of multicarrier transmission systems. However, the introduced companding noise greatly degrades the bit-error-rate (BER) performance of the ...
Jian, W.   +4 more
core   +2 more sources

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