The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
권호 표지

Stabilization of an Adaptive Polynomial Predistorter

적응형 다항식 전치왜곡기의 안정화

  • 김동현 (한양대학교 전자전기컴퓨터공학부) ;
  • 이상설 (한양대학교 전자전기컴퓨터공학부)
  • Published : 2002.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

The new architecture for the stabilization of an adaptive linearizer using the RLS algorithm is presented. The delay lock loop is apl)lied to compensate the feedback loop delay of the nonlinear amplifier output, and the Yang's algorithm is used to mitigate the numerical unstability of the RLS algorithm. This method is applied to the linearizer using the polynomial predistorter, and it's efficacy is verified by the simulation of the proposed structure.

적응형 전치왜곡 선형화기를 안정화하기 위한 구조를 제안한다. 증폭기 궤환 루프에 의한 출력 신호의 루프 지연을 보상하기 위해 지연 제어 회로를 추가하고, 적응 앨거리즘으로 사용된 RLS 앨거리즘이 갖는 수치적 불안정성을 완화하기 위하여 Yang의 앨거리즘을 도입한다. 이 방법을 다항식형 전치왜곡기를 이용한 선형화기에 적용하고 모의실험을 통하여 그 효용성을 확인한다.

Keywords

References

  1. IEEE MTT-S International Microwave Symposium Digest v.3 Measurement of memory effects in predistortion linearizers G. Gatti
  2. High-Linearity RF Amplifier Design P. B. Kenington
  3. United States Patent, no. 5,049,832 Amplifier linearization by adaptive predistortion James K. Cavers
  4. IEEE Trans. Veh. Tech. v.42 no.4 A Postdistortion Receiver for Mobile Communications Le D. Quach;S. P. Stapleton https://doi.org/10.1109/25.260750
  5. IEEE Trans. on Communications v.COM-22 Linear amplification with nonlinear components D. C. Cox
  6. IEEE Trans. Microwave Theory Tech. v.43 no.12 New adaptive double envelope feedback (ADEF) linearizer for solid state power amplifier Jean-Serge Cardinal
  7. IEE. Proc.-Commun. v.143 no.2 Fast adaptive polynomial I and Q predistorter with global optimisation M. Ghaderi;S. Kumar;D. E. Dodds https://doi.org/10.1049/ip-com:19960237
  8. Proc. IEEE Veh. Tech. Conf. Linear amplification technique for digital mobile communications Y. Nagata
  9. IEEE Trans. on Veh. Tech. v.41 no.4 Experimental performance of an adaptive digital linearized power amplifier A. S. Wright;W. G. Durlter https://doi.org/10.1109/25.182589
  10. IEEE Trans. on Signal Process. v.42 A note on the error propagation analysis of recursive least square algorithms B. Yang https://doi.org/10.1109/78.340788
  11. Proc. IRE v.49 The delay-lock discriminator: an optimum tracking device J. J. Spilker;D. T. Magill https://doi.org/10.1109/JRPROC.1961.287899
  12. Introduction to Spread Spectrum Communications R. Peterson(et al.)
  13. Adaptive Filter Theory S. Haykin
  14. Bell Syst. Tech. J. v.62 no.4 Adaptive linearization of power amplifiers in digital radio systems A. A. M. Saleh;J. Salz https://doi.org/10.1002/j.1538-7305.1983.tb03113.x
  15. IEEE Trans. on Veh. Tech. v.45 no.4 Quantization analysis and design of a digital predistortion linearizer for RF power amplifier L. Sundstrom;M. Faulkner;M. Johansson https://doi.org/10.1109/25.543741