Results 11 to 20 of about 35,890,141 (157)
IET Science, Measurement & Technology, 2021 The noise is an inherent part of a transceiver system, which becomes more severe on low‐cost systems. The power amplifier (PA) further enhances this noise and the signal to be propagated to the receiver. The conventional approach of digital predistortion
Girish Chandra Tripathi, Meenakshi Rawat
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Digital Predistorters Go Multidimensional: DPD for Concurrent Multiband Envelope Tracking and Outphasing Power Amplifiers [PDF]
IEEE Microwave Magazine, 2019 Over at least the last two decades, digital predistortion (DPD) has become the most common and widespread solution to cope with the power amplifier's (PA's) inherent linearity-versus-efficiency tradeoff. When compared with other linearization techniques, such as Cartesian feedback or feedforward, DPD has proven able to adapt to the always-growing ...
Gilabert Pinal, Pere Lluís +4 more
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Coordinate transformation based coefficients estimation algorithm for digital predistortion of RF power amplifiers [PDF]
Tongxin xuebao, 2015 Based on the low-IF digital predistortion (DPD) architecture,a coordinate transformation based low-complex coefficients estimation algorithm is proposed to reduce the hardware implementation cost and numerical calculation complexity significantly.The ...
GHao HUAN +3 more
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Wavelet Decomposition Prediction for Digital Predistortion of Wideband Power Amplifiers
Applied SciencesDigital predistortion (DPD) is essential for improving the efficiency and linearity of power amplifiers (PAs), particularly in radio frequency communication systems.
Shaocheng Peng, Jing You
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Linearization techniques to suppress optical nonlinearity [PDF]
, 2009 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis is shown the implementation of the linearization techniques such as feedforward and pre-distortion feedback linearization to suppress the ...
Tabatabai, Farbod
core +7 more sources
, 2015 L'amplificateur de puissance est le module le plus critique dans les équipements de communication radio. Il détermine la qualité de la liaison par sa linéarité et a une contribution conséquente dans la consommation de l'émetteur ; environ 60% de l'énergie consommée est consacré à l'amplification.
Mbaye, Amadou
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Comparison of single- and double-sided pulse width modulated signals with non-linear predistortion [PDF]
, 2012 Class D amplifiers are based on a low-bit pulse width modulated (PWM) signal reconstructed through the lowpass characteristic of the loudspeaker. To create a PWM signal, a non-linear conversion from a standard pulse code modulated (PCM) signal has to be ...
Weiss, Stephan +3 more
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Efficient Digital Predistortion Using Sparse Neural Network
IEEE Access, 2020 This paper proposes an efficient neural-network-based digital predistortion (DPD), named as envelope time-delay neural network (ETDNN) DPD. The method complies with the physical characteristics of radio-frequency (RF) power amplifiers (PAs) and uses a ...
Masaaki Tanio +2 more
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Optimized MSA DPD method for improving 5G multiband optical fronthaul performance
Microwave and Optical Technology Letters, Volume 65, Issue 12, Page 3326-3332, December 2023., 2023 Abstract A modified optimized magnitude‐selective affine (OMSA) model‐based digital predistortion (DPD) is presented that introduces the weighting function into our earlier proposed magnitude‐selective affine (MSA) method with an aim to further reduce the complexity overheads without affecting performance compared to the MSA method. This model utilizes
Muhammad Usman Hadi +2 more
wiley +1 more source
IEEE Access, 2020 For higher data throughput, the Massive Multi-input Multi-output (MIMO) system has been widely used in modern communication systems. Due to the circuit size and power consumption, it is difficult to integrate one Radio Frequency (RF) chain for each power
Caoyu Li +4 more
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