Title :
PM-AM/PM-PM distortions in wireless transmitter behavioral modeling
Author :
Lima, Eduardo G. ; Cunha, Telmo R. ; Pedro, José C.
Author_Institution :
Dept. de Eng. Eletr., Univ. Fed. do Parana, Curitiba, Brazil
Abstract :
This paper addresses the impact of PM-AM and PM-PM distortions observed in wireless transmitters excited by wideband signals on the performance of their behavioral models. The origins of PM-AM and PM-PM distortions in these are first identified and then the necessary conditions for their accurate representation are theoretically discussed and experimentally assessed based on experimental data measured on a complete transmitter chain. Improvements of almost 10dB in NMSE and ACEPR results are achieved when a general behavioral model that takes into account the PM-AM and PM-PM distortions is used, instead of common behavioral models that neglect such distortions.
Keywords :
distortion; filtering theory; phase modulation; power amplifiers; radio transmitters; ACEPR; NMSE; PM-AM/PM-PM distortion; wideband signals; wireless transmitter behavioral modeling; Band pass filters; Finite impulse response filter; Maximum likelihood detection; Nonlinear filters; Polynomials; Power harmonic filters; Transmitters; Filtering; Volterra series; modeling; nonlinear systems; power amplifiers;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972608
