Title :
New modified saleh models for memoryless nonlinear power amplifier behavioural modelling
Author :
O´Droma, Máirtín ; Meza, Serban ; Lei, Yiming
Author_Institution :
Telecommun. Res. Centre (TRC), Univ. of Limerick (UL), Limerick
fDate :
6/1/2009 12:00:00 AM
Abstract :
A new generic modified Saleh (MS) model for use in memoryless nonlinear power amplifier (PA) behavioural modelling is proposed. The model was evolved primarily to overcome some particular weaknesses in the original Saleh model when handling the polar AM-PM envelope modelling. From it new two parameter MS polar models are derived. By modelling a near memoryless LDMOS PA amplifying a WCDMA signal, evidence of the improvement in modelling accuracy and performance of the MS over the original Saleh for both polar and quadrature models is provided.
Keywords :
MOSFET; amplitude modulation; code division multiple access; memoryless systems; phase modulation; power amplifiers; radiofrequency amplifiers; WCDMA signal; memoryless LDMOS PA; memoryless nonlinear RF power amplifier behavioural modelling; modified Saleh model; polar AM-PM envelope modelling; quadrature model; Least squares approximation; Multiaccess communication; Permission; Power amplifiers; Predictive models; Radio frequency; Radiofrequency amplifiers; Radiofrequency identification; Solid modeling; Solid state circuits; PA behavioural models, Saleh Model;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.090222
