Title :
RF power amplifier behavioral modeling using wavelet multiresolution
Author :
Carlos Mateo;Pedro Luis Carro;Paloma Garc?a;Jesus De Mingo
Author_Institution :
Department of Electronic Engineering and Communications Aragon Institute of Engineering Research (I3A), University of Zaragoza, Spain
Abstract :
The polynomial-type structure is widely used for modeling Power Amplifiers (PA) in wireless applications, but it may present some limits when the adjacent channel response is modeled. We propose a new technique that consists of decomposing the signal in different resolution levels by means of the Stationary Wavelet Transform. The technique is applied with a waveform corresponding to an OFDM with a 8 MHz bandwidth. Computer simulations confirm the new technique improves the Normalized Mean Square Error (NMSE) about 4.5 dB and 6.24 dB in Adjacent Channel Error Power Ratio (ACEPR).
Keywords :
"Computational modeling","Signal resolution","Mathematical model","OFDM","Polynomials","Wavelet transforms","Delays"
Conference_Titel :
Power Amplifiers for Wireless and Radio Applications (PAWR), 2015 IEEE Topical Conference on
DOI :
10.1109/PAWR.2015.7139214
