Buscar
Mostrando ítems 1-10 de 24
Artículo
On the Optimum Number of Coefficients of Sparse Digital Predistorters: A Bayesian Approach
(IEEE, 2020-12)
This work presents insights on the application of the Bayesian information criterion (BIC) to fix the optimum number of coefficients in the Volterra series applied to the modeling and linearization of power amplifiers ...
Artículo
Amplifier Nonlinear Modeling with RF Pulses
(IEEE, 2008-11)
This paper proposes a Volterra kernel identification procedure for wireless amplifiers with nonlinear memory. The technique is based on a reduced-order Volterra model for wideband amplifiers that is favorably compared with ...
Artículo
Nonlinear effects in lte downlink signals and application of a compensation technique at the receiver side
(Wiley, 2012-01)
This article proposes a nonlinear compensation technique for long-term evolution downlink signals based on the memoryless solid-state power amplifier model, which provides a simple and effective linearization technique at ...
Tesis Doctoral
Analysis and experimental characterization of nonlinear circuits applied to wireless communications systems
(2008)
La Tesis realizada pretende dar una visión amplia y detallada sobre el análisis de circuitos no lineales para comunicaciones inalámbricas. Partiendo de una revisión del estado del arte de los métodos de análisis no lineal, ...
Artículo
Digital predistortion technique with in-band interference optimisation applied to DVB-T2
(The Institution of Engineering and Technology, 2012-05)
The efficient transmission and nonlinear modelling of orthogonal frequency division multiplexing (OFDM) signals are difficult to address owing to the special characteristics of this modulation scheme. Proposed is a digital ...
Artículo
A bivariate volterra series model for the design of power amplifier digital predistorters
(MDPI, 2021)
The operation of the power amplifier (PA) in wireless transmitters presents a trade-off between linearity and power efficiency, being more efficient when the device exhibits the highest nonlinearity. Its modeling and ...
Artículo
A New Approach to Pruning Volterra Models for Power Amplifiers
(IEEE, 2010-04)
The objective of this paper is to present an approach to behavioral modeling that can be applied to predict the nonlinear response of power amplifiers with memory. Starting with the discrete-time, complex-baseband full ...
Artículo
A Doubly Orthogonal Matching Pursuit Algorithm for Sparse Predistortion of Power Amplifiers
(IEEE, 2018-08)
This letter presents a new method for the digital predistortion (DPD) of power amplifiers (PAs) based on sparse behavioral models. The Gram-Schmidt orthogonalization is synergistically integrated into the orthogonal matching ...
Ponencia
Simulation of nonlinear distortion in W-CDMA communication circuits
(Society of Photo-optical Instrumentation Engineers (SPIE), 2004-04)
Different circuit-level approaches to study the effects of nonlinear distortion on coded division multiple access (CDMA) wireless communication systems are analyzed. These techniques are used to predict spectral regrowth ...
Artículo
Digital predistortion of power amplifiers using structured compressed-sensing Volterra series
(The Institution of Engineering and Technology, 2017-01)
Digital predistortion has become an attractive technique for power amplifier linearisation whose limiting factor for using Volterra series as the underlying model is its computational complexity, since the number of ...