Analysis of nonlinear effects in OFDM communications systems

Author

Ermolova, Natalia

Author_Institution

Commun. & Radio Labs., Helsinki Univ. of Technol., Finland

Volume

1

fYear

2001

fDate

2001

Firstpage

737

Abstract

Nonlinear distortions of an input signal are mainly due to the transmitter power amplifier. A theoretical analysis of the output spectrum of a memoryless, bandpass nonlinearity driven by an OFDM signal is presented. The result is obtained by the use of a technique based on the nonlinear complex gain Taylor series expansion. Therefore, both amplitude to amplitude modulation (AM/AM) and amplitude to phase modulation (AM/PM) conversions are taken into account. An explicit analytical expression for the output power spectral density is obtained

Keywords

OFDM modulation; amplitude modulation; nonlinear distortion; phase modulation; power amplifiers; series (mathematics); spectral analysis; OFDM communications systems; amplitude modulation; memoryless bandpass nonlinearity; nonlinear complex gain Taylor series expansion; nonlinear effects; output spectrum; phase modulation; transmitter power amplifier; Amplitude modulation; Communication systems; Nonlinear distortion; OFDM; Phase modulation; Power amplifiers; Power generation; Signal analysis; Taylor series; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944941

Filename

944941