Effect of peak power suppression and adaptive predistortion on power amplification of an OFCDM signal

Author

Aizawa, Naoki ; Muta, Osamu ; Akaiwa, Yoshihiko ; Sawahashi, Mamoru

Author_Institution

Graduate Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan

Volume

3

fYear

2005

fDate

30 May-1 June 2005

Firstpage

1783

Abstract

The OFCDM (orthogonal frequency and code division multiplexing) system is receiving attention to achieve a high data rate transmission for multimedia communication. A problem with the system is that PAPR (peak to average power ratio) of the OFCDM signal increases as the number of carriers increases. In this paper, we investigate peak reducing methods for OFCDM system with a predistorter power amplifier. We show that the peak reduction scheme and adaptive predistortion gives a high power efficiency and high linearity in power amplification of OFCDM signal.

Keywords

OFDM modulation; code division multiplexing; power amplifiers; adaptive predistortion; data rate transmission; multimedia communication; orthogonal frequency and code division multiplexing; peak power suppression; peak reduction scheme; peak to average power ratio; power amplifier; Code division multiplexing; Frequency domain analysis; Multimedia communication; Multimedia systems; Nonlinear distortion; OFDM; Partial transmit sequences; Peak to average power ratio; Power amplifiers; Predistortion; Adaptive Pre-distorter; OFCDM; Peak Power Reduction;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st

ISSN

1550-2252

Print_ISBN

0-7803-8887-9

Type

conf

DOI

10.1109/VETECS.2005.1543628

Filename

1543628