Title :
Analysis of data spectral regrowth from nonlinear amplification
Author :
Amoroso, Frank ; Monzingo, Robert A.
Author_Institution :
271-D West Alton Street, Santa Ana, CA 92707 USA
fDate :
6/1/1999 12:00:00 AM
Abstract :
The regrowth of OQPSK power spectral sidelobes from AM/AM and AM/PM amplifier nonlinearity is analyzed. The time-domain expression for amplifier output shows how spectral regrowth will depend on the cubic coefficient of the Taylor´s series of the amplifier nonlinearity as well as input amplitude ripple. Closed form spectrum calculations show that the spectral sidelobes produced by AM/PM take the same form as those produced by AM/AM. The rate of growth of AM/PM sidelobes is, however, not as great as for AM/AM.
Keywords :
Approximation methods; Baseband; Fourier transforms; Limiting; Markov processes; Passband; Taylor series; AM/AM; AM/PM; OQPSK; Spectral Regrowth;
Journal_Title :
Communications and Networks, Journal of
DOI :
10.1109/JCN.1999.6596750
