The Effect of Nonlinearity of a WiMAX Amplifier on the System Performance
Conference: GeMiC 2009 - German Microwave Conference
03/16/2009 - 03/18/2009 at München, Germany
Proceedings: GeMiC 2009
Pages: 4Language: englishTyp: PDF
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Authors:
Vaezi, Amir; Abdipour, Abdolali; Mohammadi, Abbas (Microwave/mm-Wave & Wireless Communication Research Lab, Radio Communication Centre of Excellence, Electrical Engineering Department, Amirkabir University of Technology, 424 Hafez. Ave, Tehran, Iran)
Abstract:
Nowadays, engineers seek for simulation and test procedures closer to the system’s final operation regime. Actually, telecommunications signals are usually modulated and aperiodic. In this paper, a new closed formulation of Envelope Transient HB appropriate for transient and steady state analysis of nonlinear active microwave circuits and systems is proposed. Then it is applied to a WiMAX power amplifier and confirmed with other methods. Finally, using the proposed CAD, we considered the effect of the nonlinearity of the power amplifier when driven with a 16-QAM modulated signal on the system performance. Thus the Symbol Error Rate (SER) degradation, and constellation performance reduction for various input power levels is evaluated.