Open AccessLattice‐based memory polynomial predistorter for wideband radio frequency power amplifiers
Author(s) -
Hassan Abdelhafiz Abubaker,
Zerguine Azzedine,
Hammi Oualid,
Ghannouchi Fadhel M.
Publication year - 2014
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2014.0129
Subject(s) - predistortion , amplifier , wideband , computer science , lattice (music) , cascade , polynomial , radio frequency , volterra series , control theory (sociology) , algorithm , electronic engineering , bandwidth (computing) , mathematics , nonlinear system , telecommunications , physics , mathematical analysis , control (management) , quantum mechanics , artificial intelligence , acoustics , engineering , chemistry , chromatography
This study addresses the ill‐conditioning problem of the memory polynomial (MP) model with application to the predistortion of highly non‐linear power amplifiers with memory effects. A resource‐efficient lattice‐based MP structure built using the cascade of a MP generator and a lattice predictor is proposed to overcome the ill‐conditioning of the MP's data matrix. The proposed model performances are benchmarked against those of the MP model as well as the orthogonal MP model. The experimental results demonstrate the suitability of the proposed predistorter as it achieves similar performance in the time and the frequency domains compared to the MP counterpart while alleviating its ill‐conditioning problem.