Nonlinear predistortion of OFDM signals over frequency-selective fading channels

Citation
An. D'Anrea et al., Nonlinear predistortion of OFDM signals over frequency-selective fading channels, IEEE COMMUN, 49(5), 2001, pp. 837-843
Citations number
16
Categorie Soggetti
Information Tecnology & Communication Systems
Journal title
IEEE TRANSACTIONS ON COMMUNICATIONS
ISSN journal
00906778 → ACNP
Volume
49
Issue
5
Year of publication
2001
Pages
837 - 843
Database
ISI
SICI code
0090-6778(200105)49:5<837:NPOOSO>2.0.ZU;2-8
Abstract
The linearization technique known as amplitude and phase (AB;Pi predistorti on, recently proposed by D'Andrea and Lottici, is applied to the orthogonal frequency-division multiplexing (OFDM) transmission context with nonlinear radio-frequency high-power amplification, The above technique is shown to provide a major enhancement in power efficiency in comparison with the unpr otected system, as well as a nonnegligible gain over an alternative lineari zation strategy, identified as minimum mean-square-error (MMSE) predistorti on, recently presented in the literature for application to OFDM. The relat ive performance of the A&P and the MMSE predistorter schemes is assessed ov er the additive white Gaussian noise channel and also in a frequency-select ive fading environment, The impact of adjacent channel interference is also discussed.