Adjacent channel power ratio analysis for an OFDM signal

Author

Ragusa, Salvatore ; Palicot, Jacques ; Roland, Christian ; Lereau, Christian

Author_Institution

TECH/ONE Lab., FranceTelecom R&D, Meylan

fYear

2005

fDate

21-21 Dec. 2005

Firstpage

495

Lastpage

500

Abstract

The nonlinear power amplification of multi-carriers signals generates a lot of perturbations. Among them the power increase in the adjacent channels is studied in this paper. This phenomenon is characterized by the adjacent channel power ratio (ACPR) parameter. The analysis we perform in this paper allows us to find a general expression of ACPR versus the number of signal´s sub-carriers, N. Then, we propose a new ACPR definition which permits to better characterize the increase of the shoulders (spectral regrowth). Another interest of our derivation is that we can find the parameters a₁ and a₃ of the amplifier´s polynomial model for a desired ACPR

Keywords

OFDM modulation; wireless channels; OFDM signal; adjacent channel power ratio analysis; multi-carriers signals; nonlinear power amplification; Laboratories; OFDM modulation; Performance analysis; Phase modulation; Power amplifiers; Power generation; Research and development; Satellite broadcasting; Signal analysis; Signal generators;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Information Technology, 2005. Proceedings of the Fifth IEEE International Symposium on

Conference_Location

Athens

Print_ISBN

0-7803-9313-9

Type

conf

DOI

10.1109/ISSPIT.2005.1577147

Filename

1577147