Look-Up-Table Predistortion Technique Based on Polynomial Nonlinearity Compensation in OFDM Systems

Author

Gong, Minjie ; Yu, Jianguo ; He, Liang

Author_Institution

Sch. of Electron. Eng., Beijing Univ. of Post & Telecommun., Beijing, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

A novel Look-Up-Table (LUT) predistortion power amplifier (PA) linearizer for OFDM systems is proposed in this paper. To improve conventional LUT linearizer, we employ Polynomial predistortion method to compensate the nonlinearity of PA through a filter. The provided method can speedup the algorithm convergence of LUT while reduce adjacent channel interference (ACI). In addition, hardware requirement of conventional LUT linearizer can also be decreased. The analysis, simulation and measured results are presented to validate the expected performances of the proposed method, a comparison with the conventional LUT linearizer is included.

Keywords

OFDM modulation; adjacent channel interference; compensation; interference suppression; polynomials; power amplifiers; table lookup; LUT convergence; OFDM system; adjacent channel interference reduction; look-up-table predistortion technique; polynomial nonlinearity compensation; power amplifier linearizer; Convergence; Filters; Hardware; Interchannel interference; OFDM; Performance analysis; Polynomials; Power amplifiers; Predistortion; Table lookup;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5300855

Filename

5300855