Impact of amplifier nonlinearities on OFDM transmission system performance

Impact of amplifier nonlinearities on OFDM transmission system performance

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 distort...

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Veröffentlicht in:IEEE communications letters 1999-02, Vol.3 (2), p.37-39
Hauptverfasser: Costa, E., Midrio, M., Pupolin, S.
Format: Artikel
Sprache:eng
Schlagworte:
Amplifiers
Bit error rate
Density
Distortion
Estimates
Frequency division multiplexing
Gaussian noise
Mathematical analysis
Nonlinear distortion
OFDM
Orthogonal Frequency Division Multiplexing
Power amplifiers
Random processes
Receivers
Signal processing
Spectra
Spectral analysis
System performance
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Zusammenfassung: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.
ISSN:1089-7798
1558-2558
DOI:10.1109/4234.749355