Results 21 to 30 of about 23,872 (186)
A review of Peak to Average Power Ratio Reduction Schemes in OFDM Systems [PDF]
Kirkuk Journal of Science, 2022 This paper is concerned with the Orthogonal Frequency Division Multiplexing (OFDM) system that is adopted by a wireless communication system for transmitting multicarrier modulated signals simultaneously with robustness against interference and noise ...
Bana Shekh Faraj, Abdulrahman Siddiq
doaj +1 more source
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 acceptted by IEEE ICASSP 2014.
Yu, Zhenhua +2 more
openaire +2 more sources
Inward Leakage in Tight-Fitting PAPRs [PDF]
Journal of Environmental and Public Health, 2011 A combination of local flow measurement techniques and fog flow visualization was used to determine the inward leakage for two tight-fitting powered air-purifying respirators (PAPRs), the 3M Breathe-Easy PAPR and the SE 400 breathing demand PAPR. The PAPRs were mounted on a breathing machine head form, and flows were measured from the blower and into ...
Koh, Frank C. +2 more
openaire +2 more sources
Information, 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
Analysis of GFDM as a robust 5G communication technique in noisy environment [PDF]
, 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
Analysis of Hybrid PAPR Reduction Methods of OFDM Signal for HPA Models in Wireless Communications
IEEE 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 Simplified Scheme of Estimation and Cancellation of Companding Noise for Companded Multicarrier Transmission Systems [PDF]
, 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
PAPR Distribution Analysis at the Output of Nonlinear PAPR Reducers
Journal 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
Peak to average power ratio based spatial spectrum sensing for cognitive radio systems [PDF]
, 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
Peak-to-average power ratio of good codes for Gaussian channel [PDF]
, 2014 Consider a problem of forward error-correction for the additive white Gaussian noise (AWGN) channel. For finite blocklength codes the backoff from the channel capacity is inversely proportional to the square root of the blocklength.
Polyanskiy, Yury, Wu, Yihong
core +2 more sources