Spectral analysis at the output of a TWT driven by an OFDM signal

Author

Cariolaro, G. ; Michieletto, G. ; Stivanello, G. ; Vangelista, L.

Author_Institution

Dept. of Electr. Eng., Padova Univ., Italy

Volume

2

fYear

1994

fDate

14-18 Nov 1994

Firstpage

653

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 scheme

Keywords

Gaussian processes; correlation methods; digital television; frequency division multiplexing; modulators; power amplifiers; spectral analysis; television broadcasting; travelling wave amplifiers; travelling wave tubes; Gaussian input; Gaussian tetravariate; Mahler´s expansion; OFDM modulator; OFDM signal; TV broadcasting; TWT; broadcasting terrestrial channel; digital signal; high power amplifiers; output correlation; spectral analysis; spectral density; Digital modulation; Fading; HDTV; High power amplifiers; OFDM modulation; Radio broadcasting; Signal analysis; Spectral analysis; TV broadcasting; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Singapore ICCS '94. Conference Proceedings.

Print_ISBN

0-7803-2046-8

Type

conf

DOI

10.1109/ICCS.1994.474148

Filename

474148