Erlang Capacity of a CDMA Link with Transmission Rate Control

  • Ioannis Koukoutsidis
  • Eitan Altman
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4003)


Regulating the transmission rate of non-real-time applications offers enhanced flexibility for QoS management and capacity control on a CDMA link. For a system working at saturation conditions, controlling data rates can further enhance its capacity. A more thorough investigation of this possibility and the trade-offs involved is presented in this paper. We analytically study the Erlang capacity of CDMA when scaling the physical transmission rates on the link. We consider single and multiple service classes, extending our analysis to an asymptotic regime. It is shown that the most efficient way of boosting this capacity is by lowering transmission rates, which nevertheless comes at the expense of increased transfer delays and energy consumption.


Transmission Rate Service Class Blocking Probability High Initial Rate Intercell Interference 
These keywords were added by machine and not by the authors.


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  1. 1.
    Altman, E.: Capacity of multi-service cellular networks with transmission-rate control: A queueing analysis. In: Proc. ACM Mobicom, pp. 205–214 (2002)Google Scholar
  2. 2.
    Franken, P., König, D., Arndt, U., Schmidt, V.: Queues and Point Processes. John Wiley & Sons, Chichester (1982)MATHGoogle Scholar
  3. 3.
    Hiltunen, K., De Bernardi, R.: WCDMA downlink capacity estimation. In: Proc. IEEE VTC Spring, pp. 992–996 (2000)Google Scholar
  4. 4.
    Holma, H., Toskala, A. (eds.): WCDMA for UMTS: Radio access for third generation mobile communications, 3rd edn. John Wiley & Sons, Chichester (2004)Google Scholar
  5. 5.
    Kaufman, J.S.: Blocking in a shared resource environment. IEEE Trans. Commun. 29, 1474–1481 (1981)CrossRefGoogle Scholar
  6. 6.
    Kelly, F.P.: Blocking probabilities in large circuit-switched networks. Adv. Appl. Prob. 18, 473–505 (1986)MathSciNetCrossRefMATHGoogle Scholar
  7. 7.
    Morrison, J.A., Mitra, D.: Asymptotic shape of the Erlang capacity region of a multiservice shared resource. SIAM J. Appl. Math. 64, 127–151 (2003)MathSciNetCrossRefMATHGoogle Scholar
  8. 8.
    Nain, P.: Qualitative properties of the Erlang blocking model with heterogeneous user requirements. Queueing Systems 6, 189–206 (1990)MathSciNetCrossRefMATHGoogle Scholar
  9. 9.
    Ross, K.W.: Multiservice Loss Models for Broadband Telecommunications Networks. Springer, Heidelberg (1995)CrossRefMATHGoogle Scholar
  10. 10.
    Uysal-Biyikoglou, E., Prabhakar, B., El Gamal, A.: Energy-efficient packet transmission over a wireless link. IEEE/ACM Trans. Networking 10, 487–499 (2002)CrossRefGoogle Scholar
  11. 11.
    Viterbi, A.M., Viterbi, A.J.: Erlang capacity of a power controlled CDMA system. IEEE J. Selected Areas in Commun. 11, 892–900 (1993)CrossRefGoogle Scholar
  12. 12.
    Viterbi, A.J.: CDMA: Principles of Spread Spectrum Communication. Addison-Wesley, Reading (1995)MATHGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Ioannis Koukoutsidis
    • 1
  • Eitan Altman
    • 2
  1. 1.FORTH-ICSHeraklion, CreteGreece
  2. 2.INRIASophia AntipolisFrance

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