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Digital predistortion using stochastic conjugate gradient method

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3 Author(s)
Hong Jiang ; Bell Labs., Alcatel-Lucent, Murray Hill, NJ, USA ; Wilford, P. ; Xin Yu

This paper is concerned with digital predistortion for linearization of RF high power amplifiers (HPAs). An iterative stochastic conjugate gradient (SCG) method is used in computing the predistorter in the digital predistortion. The SCG has the advantage of reducing the complexity and, at the same time, increasing the convergence rate and stability of iteration. We present some results of using the SCG in a hardware platform with a solid state HPA.

Published in:

Communications and Networking in China (CHINACOM), 2010 5th International ICST Conference on

Date of Conference:

25-27 Aug. 2010