Title :
An application of amplitude and phase predistortion to OFDM systems
Author :
D´Andrea, Aldo N. ; Lottici, Vincenzo ; Reggiannini, Ruggero
Author_Institution :
Dipt. di Inf. Eng., Pisa Univ., Italy
Abstract :
The linearization technique known as amplitude and phase (A&P) predistortion, proposed by D´Andea et al. (1996), is applied to the OFDM transmission context with nonlinear RF high-power amplification. The above technique is shown to provide a major enhancement in power efficiency in comparison with the unprotected system, as well as a nonnegligible gain over an alternative linearization strategy, identified as minimum mean square error (MMSE) predistortion, presented by Di Benedetto and Mandarini (1995) for application to OFDM (Benedetto and Mandarino 1996). The relative performance of the A&P and the MMSE PD schemes is assessed over the AWGN channel and also in a frequency-selective fading environment
Keywords :
AWGN channels; OFDM modulation; fading channels; least mean squares methods; linearisation techniques; AWGN channel; MMSE predistortion; OFDM systems; amplitude and phase predistortion; amplitude predistortion; enhancement; frequency-selective fading environment; gain; linearization technique; minimum mean square error; nonlinear RF high-power amplification; phase predistortion; power efficiency; AWGN channels; Digital video broadcasting; Fading; Filters; Linearization techniques; Mean square error methods; Nonlinear distortion; OFDM; Predistortion; Radio frequency;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891873
