Polynomial Model with Feedback for Digital Predistortion of Power Amplifiers

doi:10.13190/j.jbupt.2017-054

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2017, Vol. 40 ›› Issue (5): 75-81.doi: 10.13190/j.jbupt.2017-054

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Polynomial Model with Feedback for Digital Predistortion of Power Amplifiers

ZHAO Xia, LI Zhan-ning

College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China

Received:2017-09-22 Online:2017-10-28 Published:2017-11-21

Abstract

Abstract: The digital predistortion is a cost-effective way to the linearize power amplifiers. Memory polynomial is one of the most popular DPD models. However, these models cannot get a good compromise between accuracy and complexity. The author proposes a feedback-based model to characterize DPD. The model not only uses the input information, but also uses the past output information. Simulations show that the model can linearize the magnitude and phase nonlinearity of power amplifiers more effectively.

Key words: power amplifiers, memory effect, digital predistortion, signal processing

CLC Number:

TN911.72

ZHAO Xia, LI Zhan-ning. Polynomial Model with Feedback for Digital Predistortion of Power Amplifiers[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2017, 40(5): 75-81.

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Polynomial Model with Feedback for Digital Predistortion of Power Amplifiers

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