Skip to main content
Log in

Abstract

In this paper, we evaluate the Erlang capacity of CDMA systems according to two sector operation methods: optimized sectoring and fixed-angle sectoring. For the performance analysis, a multidimensional Markov channel model is developed. The improved Erlang capacity through optimized sectoring is quantified over fixed-angle sectoring. As a result, we can get about 20% capacity improvement for optimized sectoring over fixed-angle sectoring under the uniform traffic distribution among sectors. In addition, optimized sectoring provides a constant Erlang capacity improvement (about 3.6 times) over an omnidirectional case, even when traffic loads among sectors are nonuniformly distributed. On the other hand, fixed-angle sectoring results in the actual capacity improvement 1.8–3 times over an omnidirectional case, depending on the traffic distribution among sectors.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

REFERENCES

  1. M. Jansen and R. Prasad, Capacity, Throughput and Delay Analysis of a Cellular DS CDMA System with Imperfect Power Control and Imperfect Sectorization, IEEE Trans. VT, Vol. 44, No. 1, pp. 67–75, 1995.

    Google Scholar 

  2. D. Shim and S. Choi, Should the Smart Antenna Be a Tracking Beam Array or Switching Beam Array, IEEE Proc. VTC, pp. 494–498, 1998.

  3. M. Mahmoudi, E. Sousa, and H. Alavi, Adaptive Sector Size Control in a CDMA System Using Butler Matrix, IEEE Proc. VTC, pp. 1355–1359, 1999.

  4. A. Ahamd, A CDMA Network Architecture Using Optimized Sectoring, IEEE Trans. VT, Vol. 51, No. 3, pp. 404–410, 2002.

    Google Scholar 

  5. A. M. Viterbi and A. J. Viterbi, Erlang Capacity of a Power Controlled CDMA System, IEEE JSAC, Vol. 11, No. 6, pp. 892–900, 1993.

    Google Scholar 

  6. A. Sampath, N. Mandayam, and J. Holtzman, Erlang Capacity of a Power Controlled Integrated Voice and Data CDMA System, IEEE Proc. VTC, pp. 1557–1561, 1997.

  7. J. Yang, Y. Choi, J. Ahn, and K. Kim, A Capacity Plane of CDMA System for Multimedia Traffic, IEE Electr. Lett., Vol. 33, No. 17, pp. 1432–1433, 1997.

    Google Scholar 

  8. Y. Ishikawa and N. Umeda, Capacity Design and Performance of Call Admission Control in Cellular CDMA Systems, IEEE JSAC, Vol. 15, No. 8, pp. 1627–1635, 1997.

    Google Scholar 

  9. K. Kim, Handbook of CDMA System Design Engineering and Optimization, Prentice Hall, 1999.

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Koo, I., Ahmad, A. & Kim, K. Erlang Capacity of CDMA Systems Using Optimized Sectoring. International Journal of Wireless Information Networks 10, 105–110 (2003). https://doi.org/10.1023/A:1025317611755

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1025317611755

Navigation