On Adaptive Identification Algorithm for PA Linearization

Abstract:

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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.

Info:

Periodical:

Edited by:

Honghua Tan

Pages:

1268-1273

DOI:

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

Citation:

H. Li et al., "On Adaptive Identification Algorithm for PA Linearization", Applied Mechanics and Materials, Vols. 29-32, pp. 1268-1273, 2010

Online since:

August 2010

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$35.00

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