Title :
Nonlinear effects of power amplification on multicarrier spread spectrum systems
Author :
Borich, V. ; Je-Hong Jong ; East, J. ; Stark, W.E.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
We present a study of the distortion caused by power amplifiers driven by multicarrier spread-spectrum (MCSS) signals. The details of a time-domain technique for nonlinear amplifier characterization are presented as an alternative to the conventional, network analyzer methods. The bandpass nonlinear model and the associated AM-AM and AM-PM transfer characteristics are employed in order to predict the spectral regrowth as a function of the spreading gain. The predictions differ by approximately 2 dB from the measured results.
Keywords :
amplitude modulation; electric distortion; phase modulation; power amplifiers; spread spectrum communication; time-domain analysis; AM-AM transfer; AM-PM transfer; bandpass nonlinear model; distortion; multicarrier spread spectrum system; power amplifier; spectral regrowth; spreading gain; time-domain technique; Bandwidth; Distortion measurement; Frequency; Lifting equipment; Nonlinear distortion; Power amplifiers; Power system modeling; Predictive models; Spread spectrum communication; Time domain analysis;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.689384
