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A Wiener model for memory high power amplifiers using B-spline function approximation

Hong, X., Gong, Y. and Chen, S. (2011) A Wiener model for memory high power amplifiers using B-spline function approximation. In: 17th International Conference on Digital Signal Processing, 13-15 June 2011, Corfu, Greece. (ISBN: 9781457702730)

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In this paper we introduce a new Wiener system modeling approach for memory high power amplifiers in communication systems using observational input/output data. By assuming that the nonlinearity in the Wiener model is mainly dependent on the input signal amplitude, the complex valued nonlinear static function is represented by two real valued B-spline curves, one for the amplitude distortion and another for the phase shift, respectively. The Gauss-Newton algorithm is applied for the parameter estimation, which incorporates the De Boor algorithm, including both the B-spline curve and the first order derivatives recursion. An illustrative example is utilized to demonstrate the efficacy of the proposed approach.

Item Type:Conference or Workshop Item (Paper)
Divisions:Science > School of Mathematical, Physical and Computational Sciences > Department of Computer Science
ID Code:20018

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