Title :
An application of MMSE predistortion to OFDM systems
Author :
Benedetto, Maria-Gabriella Di ; Mandarini, Paolo
Author_Institution :
INFOCOM Dept., Rome Univ., Italy
fDate :
11/1/1996 12:00:00 AM
Abstract :
Orthogonal frequency division multiplexing (OFDM) particularly suffers from the presence of nonlinearities since the signal amplitude is Rayleigh distributed. The degradation introduced by the nonlinear amplifier in the transmitter can be significantly reduced by using an analog cubic predistorter minimum mean square error (MMSE) predistorter proposed by the authors (see ibid., vol.43, no.12, p.2966, 1995)
Keywords :
frequency division multiplexing; modulation; probability; travelling wave amplifiers; MMSE predistorter; MMSE predistortion; OFDM systems; Rayleigh distributed signal; analog cubic predistorter; minimum mean square error; nonlinear amplifier; nonlinearities; orthogonal frequency division multiplexing; signal amplitude; transmitter; Degradation; Discrete Fourier transforms; Frequency division multiplexing; Frequency modulation; Mean square error methods; OFDM modulation; Phase shift keying; Predistortion; Quadrature amplitude modulation; Radio transmitters;
Journal_Title :
Communications, IEEE Transactions on
