A Call Admission Strategy for Multirate Wideband CDMA Systems

  • Jon W. Mark
  • Shihua Zhu
Part of the The Springer International Series in Engineering and Computer Science book series (SECS, volume 712)


DS-CDMA is an interference multiple access technology. Both system capacity and quality of service (QoS) constraints are functions of multiple access interference (MAI). Since MAI is proportional to the transmit power strengths of other users, the level of transmit power by all participating users requires careful planning and control in order to attain QoS satisfaction and high system utilization. The power distribution of a multirate wideband CDMA system is investigated. The transmit power levels are shown to be functions of the spread bandwidth, user data rates, and the user QoS requirements. It is shown that the maximum allowable traffic load that satisfies QoS specification is upper bounded by the spread bandwidth. A call admission control algorithm to ensure QoS satisfaction is proposed. Numerical results which demonstrate the viability of the proposed call admission strategy are presented.


Power Control Traffic Demand Call Admission Control Multiple Access Interference Transmit Power Level 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    E. Dahlman, P. Beming, J. Knutsson, F. Ovesjo, M. Persson, and C. Roobol, “WCDMA — The radio interface for future mobile multimedia communications,” IEEE Trans. on Veh. Technol., vol. 47, no. 4, pp. 1105 – 1118, Nov. 1998.CrossRefGoogle Scholar
  2. [2]
    R.W. Nettleton and H. Alavi, “Power control for a spread spectrum cellular mobiel radio system,” in Proc. of IEEE VTC’83, 1983, vol. 1, pp. 242–246.Google Scholar
  3. [3]
    S.A. Grandhi, R. Vijayan, D.J. Goodman, and J. Zander, “Centralized power control in cellular radio systems,” IEEE Trans. on Veh. Technol., vol. 42, pp. 466–468, Nov. 1993.CrossRefGoogle Scholar
  4. [4]
    S.V. Hanly, “An algorithm for combined cell-site selection and power control to maximize cellular spread spectrum capacity,” IEEE JSAC, vol. 13, no. 7, pp. 1332–1340, Sept. 1995.Google Scholar
  5. [5]
    R.D. Yates and C.Y. Huang, “Integrated power control and base station assignment,” IEEE Trans. on Veh. Technol., vol. 44, no. 3, pp. 638–644, Aug. 1995.CrossRefGoogle Scholar
  6. [6]
    R.D. Yates, “A framework for uplink power control in cellular radio systems,” IEEE J-SAC, vol. 13, no. 7, pp. 1341–1347, Sept. 1995.MathSciNetGoogle Scholar
  7. [7]
    S.V. Hanly, “Capacity and power control in spread spectrum macrodiversity radio networks,” IEEE Trans. on Commun., vol. 44, no. 2, pp. 247–256, Feb. 1996.CrossRefGoogle Scholar
  8. [8]
    Z. Dziong, M. Jia, and P. Mermelstein, “Adaptive traffic admission for integrated services in CDMA wireless-access networks,” IEEE J-SAC, vol. 14, no. 8, pp. 1737–1747, Dec. 1996.Google Scholar
  9. [9]
    S. Yao and E. Geraniotis, “Optimal power control law for multimedia multirate CDMA systems,” in Proc. of IEEE VTC’96, 1996, pp. 392–396.Google Scholar
  10. [10]
    T.H. Hu and M.M.K. Liu, “Power control for wireless multimedia CDMA systems,” Electron. Lett., vol. 33, pp. 660–662, Apr. 1997.CrossRefGoogle Scholar
  11. [11]
    J.W. Mark and S. Zhu, “Power Control and Rate Allocation in Multirate Wideband CDMA Systems,” in Proc. IEEE Wireless Communications and Networking Conference (WCNC’00), Chicago, IL, Sept. 23–28, 2000, pp.168–172 (invited).Google Scholar
  12. [12]
    E.H. Dinan and B. Jabbari, “Spreading codes for direct sequence CDMA and wideband CDMA cellular networks,” IEEE Com. Mag., pp. 48–54, Sept. 1998.Google Scholar
  13. [13]
    T.H. Hu and M.M.K. Liu, “DS-CDMA system with variable-rate traffic,” IEEE Commun. Lett., vol. 2, pp. 64–47, Mar. 1998.CrossRefGoogle Scholar
  14. [14]
    K.S. Gilhousen, I.M. Jacobs, R. Padovani, A.J. Viterbi, L.A. Weaver, Jr., and C.E. Wheatley III, “On the capacity of a cellular CDMA system,” IEEE Trans. on Veh. Technol., vol. 40, pp. 303–312, May 1991.CrossRefGoogle Scholar
  15. [15]
    A.M. Viterbi and A.J. Viterbi, “Erlang capacity of power controlled CDMA system,” IEEE J. Select. Areas Commun., vol. 11, no. 6, pp. 892–900, Aug. 1993.CrossRefGoogle Scholar
  16. [16]
    P. Lancaster and M. Tismenetsky, The Theory of Matrices: with Applications, 2nd ed., Academic Press, 1985.zbMATHGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2003

Authors and Affiliations

  • Jon W. Mark
    • 1
  • Shihua Zhu
    • 2
  1. 1.Centre for Wireless Communications Department of Electrical and Computer EngineeringUniversity of WaterlooWaterlooCanada
  2. 2.Department of Information and Communications EngineeringXian Jiaotong UniversityXian, Shaanxi, P.R.C.China

Personalised recommendations