A study on New VSS-NLMS Algorithm for Digital adaptive Predistortion Linearizer 


Vol. 35,  No. 4, pp. 94-100, Apr.  2010


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  Abstract

In this paper, we propose an adaptive digital predistortion linearization based on a new VSS(Valuable step-size) NLMS(Normalized Least Mean Square) algorithm. This new proposed algorithm is derived based on the Quasi-Newton family. And this algorithm is used DFP(Davidon-Fletcher-Powell) update recursion, Simulation results are presented to compare the convergence of proposed algorithm with LMS algorithm and RLS algorithm. From the compared results, the new VSS-NLMS algorithm has advantage of more efficient computational complexity than the other algorithm and also the convergence speed of this algorithm is faster than others. The VSS based DPD has achieved -74 ㏈c (offset ±5MHz) ACLR at power amplifier for WCDMA 1FA test signal.

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  Cite this article

[IEEE Style]

H. Kim, J. Jang, Y. Choi, D. Kang, U. Hong, "A study on New VSS-NLMS Algorithm for Digital adaptive Predistortion Linearizer," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 4, pp. 94-100, 2010. DOI: .

[ACM Style]

Hee-Gon Kim, Jeong-seok Jang, Yong-Gyu Choi, Dong-Jin Kang, and Ui-Seok Hong. 2010. A study on New VSS-NLMS Algorithm for Digital adaptive Predistortion Linearizer. The Journal of Korean Institute of Communications and Information Sciences, 35, 4, (2010), 94-100. DOI: .

[KICS Style]

Hee-Gon Kim, Jeong-seok Jang, Yong-Gyu Choi, Dong-Jin Kang, Ui-Seok Hong, "A study on New VSS-NLMS Algorithm for Digital adaptive Predistortion Linearizer," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 4, pp. 94-100, 4. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880