An adaptive RF individual-order predistorter using power minimization [CDMA cellular applications]

Author

Kim, Jin Young ; Kim, Jong Heon

Author_Institution

Dept. of Radio Sci. & Eng., Kwangwoon Univ., Seoul, South Korea

fYear

2004

fDate

18-19 Nov. 2004

Firstpage

674

Lastpage

678

Abstract

In this paper, an adaptive RF individual-order predistorter, using power minimization, is proposed and manufactured for CDMA cellular systems. From the measurement results, the proposed adaptive predistorter gives an improvement for the 2-tone test which is 23.6 dBc and 11.97 dBc for IM3 and IM5, respectively. Also, from the field test of CDMA IFA IS-95A, 4 dB improvement is achieved. Through experiments, the stability of the adaptive predistorter is maintained below -46.5 dBc over -10°C∼55°C.

Keywords

UHF power amplifiers; adaptive filters; cellular radio; circuit stability; code division multiple access; intermodulation distortion; linearisation techniques; -10 to 55 degC; 10 W; CDMA cellular systems; IMD; adaptive RF individual-order predistorter; adaptive filter; amplifier nonlinearities; power amplifier linearization; power minimization; predistorter stability; Multiaccess communication; Nonlinear distortion; Power engineering and energy; Pulp manufacturing; Radio frequency; Radiofrequency amplifiers; Signal generators; Stability; Temperature; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004. Proceedings of 2004 International Symposium on

Print_ISBN

0-7803-8639-6

Type

conf

DOI

10.1109/ISPACS.2004.1439144

Filename

1439144