Spectral analysis of the powers of a PAM digital signal
Abstract
The power spectrum of a pulse-amplitude-modulated (PAM) digital signal is investigated analytically. The PAM signal is modeled as a cyclostationary random process, and closed-form expressions for the autocorrelation and spectral density of the process function are obtained by applying the discrete-time Volterra-system analysis of Cariolaro and Di Masi (1980). Numerical results for the digital-transmission pulse shapes proposed by Franks (1968) are presented graphically, and the implications for timing extraction and carrier recovery or nonlinear-power-amplifier performance evaluation in digital satellite communications are indicated.
- Publication:
-
Alta Frequenza
- Pub Date:
- April 1984
- Bibcode:
- 1984AlFr...53...70B
- Keywords:
-
- Digital Data;
- Pulse Amplitude Modulation;
- Pulse Communication;
- Spectrum Analysis;
- Autocorrelation;
- Mean;
- Random Processes;
- Communications and Radar