Memory polynomial digital predistortion for power amplifiers

Due to the development of wireless communication systems, the linearity requirement of power amplifiers (PAs) is very stringent. A new concept was proposed to model a predistorter directly without modeling a PA firstly. The algorithm can not only improve the linearity of amplifier, but also adjust t...

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Bibliographic Details
Main Authors: Cuiping Yu, Yongsheng Feng, Yuanan Liu, Gang Xie
Format: Conference Proceeding
Language:English
Subjects:
Delay
Linearity
Multiaccess communication
Neural networks
Polynomials
Power amplifiers
Power system modeling
Predistortion
Signal analysis
Wideband
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Description
Summary:Due to the development of wireless communication systems, the linearity requirement of power amplifiers (PAs) is very stringent. A new concept was proposed to model a predistorter directly without modeling a PA firstly. The algorithm can not only improve the linearity of amplifier, but also adjust the gain of PAs dependently. Based on this algorithm, the behavioral model and structure of the predistorter are also introduced. Linearization performance is demonstrated on a WCDMA signal.
DOI:10.1109/ISCIT.2007.4391976