Title :
A flexible method of LUT indexing in digital predistortion linearization of RF power amplifiers
Author :
Hassani, Javad Yavand ; Kamarei, Mahmoud
Author_Institution :
Dept. of Electr. & Comput. Eng., Tehran Univ., Iran
Abstract :
A new method of lookup table (LUT) indexing for use in the RF power amplifier linearization with digital predistortion is presented. In this method the density of table entries in a specified amplitude region, is proportional to the amplifier nonlinearity in that region. This method is simple, flexible, and adaptive. Simulation results show considerable improvement of Adjacent Channel Interference (ACI) compared to the conventional indexing with the amplitude method
Keywords :
adjacent channel interference; electric distortion; linearisation techniques; power amplifiers; radiofrequency amplifiers; table lookup; ACI; LUT indexing; RF power amplifiers; adjacent channel interference; amplifier nonlinearity; digital predistortion linearization; flexible method; lookup table indexing; Hardware; Indexing; Interchannel interference; Neural networks; Polynomials; Power amplifiers; Predistortion; Radio frequency; Radiofrequency amplifiers; Table lookup;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921786
