Title :
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
fDate :
2/1/1999 12:00:00 AM
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;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.749355
