Results 11 to 20 of about 24,346 (205)
Distributions of Upper PAPR and Lower PAPR of OFDM Signals in Visible Light Communications [PDF]
2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 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 +2 more sources
Frequency-Selective PAPR Reduction for OFDM [PDF]
IEEE Transactions on Vehicular Technology, 2019 We study the peak-to-average power ratio (PAPR) problem in orthogonal frequency-division multiplexing (OFDM) systems. In conventional clipping and filtering based PAPR reduction techniques, clipping noise is allowed to spread over the whole active ...
Gökceli, Selahattin +4 more
core +7 more sources
Precoding for PAPR Reduction in UW-OFDM [PDF]
IEEE Communications Letters, 2021 Unique Word Orthogonal Frequency Division multiplexing (UW-OFDM) is a variant of the multicarrier technique that has shown better bit error performance compared to cyclic prefixed (CP-)OFDM. Like other multicarrier techniques, UW-OFDM suffers from the high peak-to-average-power ratio (PAPR) problem, which is an obstacle ahead of practical ...
Morteza Rajabzadeh, Heidi Steendam
openaire +2 more sources
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 +3 more
doaj +1 more source
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 +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
Aegis Mark II Study on Powered Air Purifying Innovation Respirator Efficiency Comparison
Philippine Journal of Orthopaedics, 2023 Introduction. COVID-19, a respiratory droplet-transmitted disease, has claimed approximately 7 million lives worldwide, partly due to a shortage of Personal Protective Equipment (PPEs) needed for prompt patient care. This study was done to assess if the
Hansel Gould Cocjin +2 more
doaj +1 more source
PAPR Constrained Power Allocation for Iterative Frequency Domain Multiuser SIMO Detector [PDF]
, 2014 Peak to average power ratio (PAPR) constrained power allocation in single carrier multiuser (MU) single-input multiple-output (SIMO) systems with iterative frequency domain (FD) soft cancelation (SC) minimum mean squared error (MMSE) equalization is ...
Karjalainen, Juha +3 more
core +2 more sources
CLIPPING TECHNIQUES FOR PAPR REDUCTION IN FBMC/OQAM SYSTEM OVER DOUBLY-SELECTIVE CHANNELS
Journal 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
Analysis of PAPR in optical OFDM systems with grouped LEDs [PDF]
, 2017 The need for multiple transmit chains poses a major challenge in optical orthogonal frequency division multiplexing (OFDM) system utilising grouped light emitting diodes (LEDs) for the purpose of peak-to-average power ratio (PAPR) reduction. Thus, recent
Offiong, Funmilayo B. +2 more
core +2 more sources