On Adaptive Identification Algorithm for PA Linearization

Huan Li; Cheng Sheng Pan; Yu Zhang; Bo Ren

doi:10.4028/www.scientific.net/AMM.29-32.1268

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 29-32On Adaptive Identification Algorithm for PA...

On Adaptive Identification Algorithm for PA Linearization

Abstract:

According to the nonlinear amplification characteristic with memory effection of power amplifier(PA) in WCDMA systems, we have analyzed the structure of Wiener digital predistortion system in which Hammerstein power amplifier model with memory is adopted. LR algorithm and LMS algorithm were used respectively to identify and update parameters of Wiener predistortion system. An LR / LMS identification algorithm is proposed for syetem adaptive Identification. The method has a very good suppression of signal spectral regrowth. Theoretical analysis and computer simulation verified the effectiveness and practicability of the algorithm.

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Periodical:

Applied Mechanics and Materials (Volumes 29-32)

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1268-1273

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.29-32.1268

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Online since:

August 2010

Authors:

Huan Li, Cheng Sheng Pan, Yu Zhang, Bo Ren

Keywords:

Adaptive Identification, Digital Predistortion, Linearization, Power Amplifier

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