Browsing by Author "López Bueno, David"
Now showing items 1-20 of 31
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3D digital predistortion for dual-band envelope tracking power amplifiers
(2013)
Conference lecture
Restricted access - publisher's policyThis paper proposes a novel three-dimensional digital predistorter (3D-DPD) suitable for compensating nonlinear distortion in dual-band (DB) envelope tracking (ET) power amplifiers (PAs). By taking into account the ... -
A method for selecting online the coefficients to be updated in a DPD for PA linearization
(2019)
Conference report
Restricted access - publisher's policyThis paper presents a technique for selecting onlinethe coefficients to be updated in a digital predistorter (DPD)based on direct learning. The proposed method, which is basedon a combination of matching pursuit (MP) and ... -
A real-time FPGA-based implementation of a high-performance MIMO-OFDM mobile WiMAX transmitter
(2011)
Conference report
Open AccessThe Multiple Input Multiple Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) is considered a key technology in modern wireless-access communication systems. The IEEE 802.16e standard, also denoted as ... -
A real-time FPGA-based implementation of a high-performance MIMO-OFDM transceiver featuring a closed-loop communication scheme
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Conference report
Restricted access - publisher's policyIn this paper we present the FPGA implementation of a multi-antenna Orthogonal Frequency-Division Multiplexing (OFDM) transmitter and receiver featuring a closed-loop (CL) communication scheme. The PHY-layer development ... -
A real-time FPGA-based mobile WiMAX transceiver supporting multi-antenna configurations
(IEEE, 2011)
Conference report
Restricted access - publisher's policyThis paper presents the design, implementation and experimental validation of a real-time FPGA-based mobile WiMAX baseband transceiver. Three different antenna configuration schemes were implemented and tested, namely ... -
A real-time MIMO-OFDM mobile WiMAX receiver: architecture, design and FPGA implementation
(2011-11)
Article
Restricted access - publisher's policyThe IEEE 802.16e-2005 standard, also denoted as mobile WiMAX, was introduced as one of the first real efforts towards the deployment of fourth generation communication systems providing fixed and mobile broadband wireless ... -
Adaptive principal component analysis for online reduced order parameter extraction in PA behavioral modeling and DPD linearization
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policyThis paper presents a new method, based on the adaptive principal component analysis (APCA) technique, that iteratively creates and updates an orthogonal data matrix used to estimate the parameters of power amplifier (PA) ... -
Amping up, saving power
(2016-01-01)
Article
Open AccessFourth-generation (4G) communication systems based on orthogonal frequency division multiplexing (OFDM) and the proposed backwards compatible fifth-generation (5G) variants, like filter-bank multicarrier (FBMC), are based ... -
Dataset reduction for neural network based digital predistorters under strong nonlinearities
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Open AccessThe artificial neural networks (ANN) are gaining momentum in the digital predistorters (DPD) thanks to their inherently good approximation capabilities. Under strong or complex power amplifier nonlinearities, the size of ... -
Design, implementation and testing of a real-time mobile WiMAX testbed featuring MIMO technology
(2010-05)
Conference lecture
Open Access -
Dynamic selection and estimation of the digital predistorter parameters for power amplifier linearization
(IEEE Microwave Theory and Techniques Society, 2019-07-03)
Article
Open AccessThis paper presents a new technique that dynamically estimates and updates the coefficients of a digital predistorter (DPD) for power amplifier (PA) linearization. The proposed technique is dynamic in the sense of estimating, ... -
Dynamic selection and update of digital predistorter coefficients for power amplifier linearization
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference lecture
Restricted access - publisher's policyIn this paper, a new method for dynamically estimating and updating the coefficients of a digital predistortion (DPD) linearizer is presented. By means of the partial least squares (PLS) algorithm, the basis matrix used ... -
Gedomis: un testbed multi-antenna en temps real
(2008-06)
Article
Restricted access - publisher's policyEls sistemes multi-antena són una solució tecnològica viable cada cop més present als estàndards de sistemes ràdio actuals. Aquí presentem el demostrador Gedomis en procés de desenvolupament per provar la viabilitat ... -
Independent digital predistortion parameters estimation using adaptive principal component analysis
(IEEE Microwave Theory and Techniques Society, 2018-01-01)
Article
Open AccessThis paper presents an estimation/adaptation method based on the adaptive principal component analysis (APCA) technique to guarantee the identification of the minimum necessary parameters of a digital predistorter. The ... -
Interference management in LTE-based HetNets: a practical approach
(Wiley-Blackwell, 2015)
Article
Open AccessInterference is a major obstacle in radio communications, especially when opportunistic frequency reuse is an inherent requirement for maximising spectral ef¿ciency in heterogeneous networks. A typical example is encountered ... -
Linealización digital de transmisores mediante redes neuronales no lineales
(2019)
Conference report
Restricted access - publisher's policyThis paper presents an overview on how the artificial neural networks (ANN) are applied to digitally linearize modern transmitters. The use of nonlinear ANNs is intended to either assist or replace the traditional crest ... -
Machine learning techniques for adaptive polynomial and neural network digital predistorters
(Universitat Politècnica de Catalunya, 2023-07-07)
Doctoral thesis
Open Access(English) The power amplifier (PA) is a core element in the radio transmitters to support the required mobile and fixed broadband communication link ranges. However, the PA is a power-hungry and nonlinear by nature device. ... -
MATLAB as a design and verification tool for the hardware prototyping of wireless communication systems
(InTech, 2012-09)
Part of book or chapter of book
Open Access -
Multi-dimensional LUT-based digital predistorter for concurrent dual-band envelope tracking power amplifier linearization
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference lecture
Open AccessThis paper presents a multi lookup table (LUT) implementation scheme for the 3D distributed memory polynomial (3D-DMP) behavioral model used in Digital Predistortion (DPD) linearization for concurrent dual-band envelope ... -
Order reduction of wideband digital predistorters using principal component analysis
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference lecture
Restricted access - publisher's policyThis paper presents how to apply order reduction in wide-band digital predistortion (DPD) linearizers using the principal component analysis (PCA) technique. This method is tested in a wireless backhauling transmitter ...
