Title :
Power Amplifiers Linearization Based on Digital Predistortion with Memory Effects
Author :
Barahimi, Amin ; Mirzakuchaki, Sattar ; Karami, Saeid
Author_Institution :
Electr. Eng. Dept., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
Power amplifiers require linearization in order to reduce adjacent inter-modulation distortion without losing efficiency. Digital predistortion is a cost effective method to achieve this goal and it needs an accurate model of the amplifier. Most of the amplifier models are based on memoryless modeling. This kind of modeling is simple but it´s not accurate enough if linearization is important; and also for wide band modulations like QAM, we should consider the memory effects of power amplifiers.
Keywords :
distortion; linearisation techniques; power amplifiers; digital predistortion; intermodulation distortion; memory effects; power amplifier linearization; Costs; Equations; Frequency; Nonlinear distortion; Polynomials; Power amplifiers; Power engineering computing; Predistortion; Quadrature amplitude modulation; Voltage; memory effect; power amplifier; predistortion;
Conference_Titel :
Computer and Electrical Engineering, 2009. ICCEE '09. Second International Conference on
Conference_Location :
Dubai
Print_ISBN :
978-1-4244-5365-8
Electronic_ISBN :
978-0-7695-3925-6
DOI :
10.1109/ICCEE.2009.141
