Title :
Spectrum Analysis of OFDM-Based Communication Systems with Nonlinear High Power Amplifier
Author :
Yan Chen ; Chun-hua Zhu ; Yan, Chen ; Hui Xiao
Author_Institution :
Sch. of Comput. & Inf. Eng., Beijing Technol. & Bus. Univ., Beijing, China
Abstract :
In RF communication design and analysis, the nonlinear effects of high power amplifier (HPA) are critical. But its AM/PM distortion is usually ignored in existing literatures for simplicity. The AM/AM and AM/PM characteristics of HPA are modeled by the power series expansion, and the theoretical expressions of out-band emission levels are derived in this paper. The predicted power spectrum of amplified OFDM signal by using this model agrees with the simulation results both the pass band and shoulder area.
Keywords :
OFDM modulation; fading channels; multipath channels; spectral analysis; OFDM-based communication systems; amplified OFDM signal; nonlinear effects; nonlinear high power amplifier; power series expansion; spectrum analysis; Communication systems; High power amplifiers; Interference; OFDM modulation; Power amplifiers; Power engineering and energy; Power engineering computing; Power system modeling; Predictive models; Radio frequency; OFDM; high power amplifier; spectrum analysis;
Conference_Titel :
Communications and Mobile Computing (CMC), 2010 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-6327-5
Electronic_ISBN :
978-1-4244-6328-2
DOI :
10.1109/CMC.2010.155
