The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Predictive Closed-Loop Power Control for CDMA Systems in Time-Varying Fading Channels

시변 페이딩 채널하에 CDMA 시스템을 위한 예측 폐루프 전력제어

  • Choe, Sang-Ho (School of Information, Communication & Electronics Engineering, The Catholic University of Korea)
  • Published : 2005.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we present a novel predictive CDMA closed-loop power control (CLPC) method with a multi-step least squares (LS) linear predictor for time-varying fading channels. The proposed method effectively compensates multiple power control group delays and provides significant performance gains over nonpredictive CLPCs as well as conventional predictive CLPCs with one-step linear predictor.

본 논문에서는 시변 페이딩 채별에 적합한 멀터스텝 LS 선형예측기를 갖는 새로운 예측 CDMA 폐루프 전력 제어 방식을 제안한다. 제안된 방식은 다중 전력 제어 그룹 지연을 효과적으로 보상하여 주며 단일 스텝 예측기를 갖는 기존의 예측 CLPC 방식이나 비예측 CLPC 방식에 비하여 우수한 성능 이득을 갖는다.

Keywords

References

  1. K. Leibnitz, P. Tran-Gia, and J. E. Miller, 'Analysis of the dynamics of CDMA reverse link power control,' Proc. IEEE GLOBECOM, Sydney, Australia, pp. 2109-2114, Nov. 1998
  2. D. M. Ionescu and A. Boariu, 'Predictability of uplink channels from downlink channels in frequency division duplex systems: a power control application,' IEEE Trans. Wireless Commun., vol. 3, no. 5, pp. 1781-1788, Sept. 2004 https://doi.org/10.1109/TWC.2004.834689
  3. F. C. M. Lau and W. M. Tarn, 'Achievable-SIR-based predictive closed-loop power control in a CDMA mobile system,' IEEE Trans. Veh. Technol. vol. 51, no. 4, pp. 720-728, July 2002 https://doi.org/10.1109/TVT.2002.1015341
  4. T. Eyceoz, A. Duel-Hallen, and H. Hallen, 'Deterministic channel modeling and long range prediction of fast fading mobile radio channels,' IEEE Commun. Lett., vol. 2, no. 9, pp. 254-256, Sept. 1998 https://doi.org/10.1109/4234.718494
  5. M. H. Hayes, Statistical digital signal processing and modeling, John Wiley & Sons Inc., 1996
  6. L. Song, N. B. Mandayam, and Z. Gajic, 'Analysis of an up/down power control algorithm for the CDMA reverse link under fading,' IEEE J. on Select. Areas in Commun., vol. 19, no. 2, pp. 227-286, Feb. 2001
  7. W. C. Jakes, Microwave Mobile Communications, New York: Wiley, 1974