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Tytuł artykułu

Linear quadratic power control for CDMA systems

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this paper, we present a robust decentralized method for jointly performing channel estimation and closed loop power control for the reverse link of CDMA networks. Our method, based on linear quadratic Gaussian (LQG) control systems theory and Kalman filtering, does not require any training symbols for channel or signal to interference ratio (SIR) estimation. The main interest of this new scheme is that it improves the performance of current SIR based power control techniques while avoiding the problem of power escalation, which is often observed in current systems.
Rocznik
Tom
Strony
48--54
Opis fizyczny
Bibliogr. 14 poz., tab., rys.
Twórcy
  • Institute for Telecommunications Research, University of South Australia, Mawson Lakes, SA 5095, Australia
autor
  • Institute for Telecommunications Research University of South Australia Mawson Lakes, SA 5095, Australia
autor
  • Department of Electrical and Electronic Engineering Adelaide University Adelaide, SA 5000, Australia
Bibliografia
  • [1] J. G. Proakis, Digital Communications. McGraw-Hill, 1995, 3 ed.
  • [2] A. J. Viterbi, CDMA: Principles of Spread Spectrum Communications. Addison-Wesley, 1995.
  • [3] S. Nourizadeh, P. Taaghol, and R. Tafazolli, “A novel closed loop power control for UMTS”, in First Int. Conf. 3G Mob. Commun. Technol., 2000, pp. 56–59.
  • [4] F. Ye, Q. T. Zhang, and C. C. Ko, “A simple adaptive up-link power control algorithm for DS/CDMA system”, in IEEE/AFCEA EUROCOMM’2000, Inform. Syst. Enhan. Publ. Saf. Secur., 2000, pp. 16–19.
  • [5] F. C. M. Lau and W. M. Tam, “Novel predictive power control In a CDMA mobile radio system”, in IEEE 51st Veh. Technol. Conf. Proc., 2000, vol. 3, pp. 1950–1954.
  • [6] S. Gunaratne, S. Nourizadeh, T. Jeans, and R. Tafazoli, “Performance of SIR-based power control for UMTS”, in Second Int. Conf. 3G Mob. Commun. Technol., 2001, pp. 16–20.
  • [7] A. Kurniawan, “SIR-estimation in CDMA systems using auxiliary spreading sequence”, Mag. Electr. Eng., vol. 5, no. 2, pp. 9–18, 1999.
  • [8] H. Holma and A. Toskala, Eds., WCDMA for UTMS. Wiley, 2001.
  • [9] D. Zhang, Q. T. Zhang, and C. C. Ko, “A novel joint strength and SIR based CDMA reverse link power control with variable target SIR”, in IEEE Int. Conf. Commun., 2000, vol. 3, pp. 1502–1505.
  • [10] S. Ratanamahatana and H. M. Kwon, “Channel estimation for Power controlled 3G CDMA”, in IEEE 51st Veh. Technol. Conf. Proc., 2000, vol. 3, pp. 2429–2433.
  • [11] L. Qian and Z. Gajic, “Joint optimization of mobile transmission power and SIR error in CDMA systems”, in Proc. 2001 Am. Contr. Conf., 2001, vol. 5, pp. 3767–3772.
  • [12] L. Qian and Z. Gajic, “Variance minimization stochastic Power control in CDMA systems”, in IEEE Int. Conf. Commun., 2002, vol. 3, pp. 1763–1767.
  • [13] S. Perreau, M. Anderson, and L. White, “Adaptive power control for CDMA systems using linear quadratic Gaussian control”, in Thirty Sixth Asil. Conf. Sig., Syst. & Comput., Nov. 2002.
  • [14] W. C. Jakes, Ed., Microwave Mobile Communications. IEEE Press, 1994.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPS2-0021-0022
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