Impact of amplifier nonlinearities on OFDM transmission system performance

Author

Costa, Elena ; Midrio, Michele ; Pupolin, Silvano

Author_Institution

Dipt. di Elettronica e Inf., Padova Univ., Italy

Volume

3

Issue

2

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

37

Lastpage

39

Abstract

The power spectral density of an orthogonal frequency-division multiplexing (OFDM) signal after a saturated high-power amplifier (HPA) is analytically derived. The distortion of the HPA-processed OFDM signal is defined, and its power spectrum is computed. The spectra of the signal and of the distortion are used to get an accurate estimate of the bit-error rate of an OFDM transmission system and to derive compensation at the receiver, which leads to performance improvement.

Keywords

OFDM modulation; digital television; error compensation; error statistics; power amplifiers; spectral analysis; television broadcasting; television receivers; television transmitters; HPA; OFDM transmission system performance; amplifier nonlinearities; bit-error rate; compensation; orthogonal frequency-division multiplexing; performance; power spectral density; power spectrum; receiver; saturated high-power amplifier; Bit error rate; Frequency division multiplexing; Gaussian noise; Nonlinear distortion; OFDM; Power amplifiers; Random processes; Signal processing; Spectral analysis; System performance;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.749355

Filename

749355