Results 91 to 100 of about 4,686 (214)
Research on linearisation of power amplifier based on digital pre-distortion
The Journal of Engineering, 2019 The power amplifier is an important device in the communication system, and its non-linear characteristics will lead to serious distortion of the output signal, reducing the performance of the communication system.
Kai Fang, Da Liu, Yongqing Wang
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Reduced Complexity Sequential Digital Predistortion Technique for 5G Applications
Smart CitiesWireless communication infrastructure is a key enabling technology for smart cities. This paper investigates a novel technique to enhance the performance of 5G base stations by addressing the compensation of nonlinear distortions caused by radiofrequency
Moustafa Abdelnaby +3 more
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IEEE Access, 2020 This paper proposes two novel vector decomposed neural network models for behavioral modeling and digital predistortion (DPD) of radio-frequency (RF) power amplifiers (PAs): vector decomposed long short-term memory (VDLSTM) model and simplified vector ...
Hongmin Li +3 more
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Digital predistorter using multiple lookup tables
Electronics Letters, 2003 A new digital predistorter is proposed that copes with the variation of power amplifier characteristics faster than the adaptation rate of the predistorter by using multiple lookup tables. Experimental results derived from a prototype show that the proposed predistorter can suppress the adjacent channel interference up to 12 dB compared to the ...
W.J. Jung, W.R. Kim, K.M. Kim, K.B. Lee
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IEEE AccessIn this work, a formulation of alternating direction method of multipliers (ADMM) for addressing power amplifiers (PA) modeling and linearization problems is presented. The proposal consists on leveraging the implicit redundancy of the equations in order
Elias Marques-Valderrama +2 more
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Dynamic selection and estimation of the digital predistorter parameters for power amplifier linearization [PDF]
, 2019 © © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Gilabert Pinal, Pere Lluís +3 more
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Design and Analysis of a CO-OFDM Transmitter With Limited Modulator Extinction Ratio
IEEE Photonics Journal, 2014 In this paper, we consider the design and analysis of a coherent optical OFDM (CO-OFDM) transmitter using an optical in-phase/quadrature (I/Q) modulator with limited extinction ratio (ER) under four modulation formats. The transmitter-side digital signal
Lingchen Huang +2 more
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Comparison of Feature Selection Techniques for Power Amplifier Behavioral Modeling and Digital Predistortion Linearization. [PDF]
Sensors (Basel), 2021 Barry A, Li W, Becerra JA, Gilabert PL.
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Synthesis of high-order bandpass filters based on coupled-resonator optical waveguides (CROWs) [PDF]
, 2011 We present a filter design formalism for the synthesis of coupled-resonator optical waveguide (CROW) filters. This formalism leads to expressions and a methodology for deriving the coupling coefficients of CROWs for the desired filter responses and is ...
Liu, Hsi-Chun, Yariv, Amnon
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Baseband Predistortion Lineariser Using Direct Spline Computation [PDF]
, 2002 A baseband predistorter is presented. Key features of the predistorter resides in the use of cubic splines interpolation to generate predistorted input data to the power amplifier, resulting in a reduction of computational effort with respect to ...
Acciari, G. +3 more
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