Title :
Analysis of nonlinear effects in OFDM communications systems
Author :
Ermolova, Natalia
Author_Institution :
Commun. & Radio Labs., Helsinki Univ. of Technol., Finland
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;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944941
