The use of high power amplifiers, such as TWTs, at the output of an OFDM modulator is requested when the digital signal is to be transmitted over a broadcasting terrestrial channel. The spectral analysis at the output of a TWT driven by a Gaussian input is carried out and the result is applied to the case of an OFDM signal. Output correlation and spectral density are obtained using the Mahler's expansion of a Gaussian tetravariate and are then applied to a practical OFDM scheme
Spectral Analysis at the Output of a TWT Driven by an OFDM signal
VANGELISTA, LORENZO;
1994
Abstract
The use of high power amplifiers, such as TWTs, at the output of an OFDM modulator is requested when the digital signal is to be transmitted over a broadcasting terrestrial channel. The spectral analysis at the output of a TWT driven by a Gaussian input is carried out and the result is applied to the case of an OFDM signal. Output correlation and spectral density are obtained using the Mahler's expansion of a Gaussian tetravariate and are then applied to a practical OFDM schemeFile in questo prodotto:
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