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Uplink Capacity/Coverage Analysis of WCDMA with Switched Beam Smart Antennae

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Abstract

Capacity and coverage represent, in addition to QoS, the three main requirements for W-CDMA based 3G mobile communication systems. These are conflicting requirements; i.e., optimizing one will be on the account of the other two. All three, however, depend largely on the interference levels in the system. Improvements on interference are thought to have a decisive effect on the performance of the 3G system and one important interference reduction technique is the utilization of smart antennae. In this paper, we analyze capacity/coverage on the uplink in W-CDMA system utilizing switched beam smart antennae, SBSA, using a simple model of the antenna, while satisfying a certain minimum level of QoS. Limits imposed by both interference from others and the limited uplink power available to any user in the cell are considered. Results of this paper are analytical formulae for capacity/coverage that take into consideration many of the important parameters of either the antennae or the WCDMA system. A sectional view of improvement gains, if any, of either capacity or coverage upon antenna upgrading/downgrading is provided. It is shown that improvements by the directional SBSA of either capacity or coverage, are only attained at high interference conditions; i.e., higher number of users when considering coverage improvement or smaller coverage areas when considering capacity. The higher the interference conditions are the higher gain over side lobes or more beams SBSA are needed to attain improvement.

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References

  1. Holma, H., & Toskala, A. (Eds.). (2000). W-CDMA for UMTS. John Wiley and Sons.

  2. Godara L.C. (2004). Smart antennas. CRC press, USA

    Google Scholar 

  3. Tsoulos G.V. (1999). Smart antennas for mobile communication systems, benefits and challenges. Electronics and Communication Engineering Journal 11(2): 84–94

    Article  Google Scholar 

  4. Bao, T. V. (2002). Smart antenna system architecture and hardware implementation. In L. C. Godara (Ed.), Handbook of antennas in wireless communicantions. Section 22, Part E, CRC press.

  5. Herscovici N., Christodoulou C. (2001). Potentials of smart antennas in CDMA Systems and uplink improvements. IEEE Antennas and Propagation Magazine 43(5): 172–177

    Article  Google Scholar 

  6. Wyglinski A.M., Blostein S.D. (2003). On uplink CDMA cell capacity: Mutual coupling and scattering effects on beamforming. IEEE Transactions on Vehicular Technology 52(2): 289–304

    Article  Google Scholar 

  7. Yu J., Yao Y., Zhang J. (2004). Reverse-link capacity of power-controlled CDMA systems with beamforming. IEEE Transactions on Vehicular Technology 53(5): 1423–1433

    Article  Google Scholar 

  8. Yu J., Yao Y., Zhang J. (2006). Performance evaluation of CDMA reverse links with imperfect beamforming in a multicell environment using a simplified beamforming model. IEEE Transactions on Vehicular Technology 55(3): 1019–1031

    Article  Google Scholar 

  9. Allen B., Beach M. (2004). On the analysis of switched-beam antennas for the W-CDMA downlink. IEEE Transactions on Vehicular Technology 53(3): 568–578

    Article  Google Scholar 

  10. Cabrera, D., & Rodriguez, J. (2004). Switched beam smart antenna BER performance analysis for 3G CDMA cellular communication. Computer Research Conference CRC2004, Puerto Rico, April 2004.

  11. MacNamara T. (1987). Simplified design procedures for butler matrices incorporating 90° hybrids or 180° hybrids. IEE proceedings H, Microwaves, Antennas & Propagation 134(1): 50–54

    Google Scholar 

  12. Goransson, B., Hagerman, B., & Barta, J. (2000). Adaptive antennas in WCDMA systems-link level simulation results based on typical user scenarios. IEEE Vehicular Technology Conference, VTC 2000. Boston, MA, 52nd, Vol.1, pp. 157–164.

  13. Marikar, S. H., & DaSilva, L. A. (2002). Resource management in third generation mobile communication systems employing smart antennas. In Proceedings of INFOCOM 2002. Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies (Vol. 3 , pp. 1461–1469).

  14. Liberti J., Rappaport T.S. (1999). Smart Antenna for Wireless Communications: IS 95 and 3G CDMA. Prentice Hall, Englewood Cliffs, NJ

    Google Scholar 

  15. IEC (2005). The International Engineering Consortium. “Smart Antenna Systems.” htttp//:www.iec.org: 2005.

  16. Winters J.H. (1998). Smart Antenna for Wireless Systems. IEEE Personal Communications 5(1): 23–27

    Article  Google Scholar 

  17. Winters J.H., Gans M.J. (1999). The Range increase of adaptive versus phased arrays in mobile radio systems. IEEE Transactions on Vehicular Technology 48(2): 353–362

    Article  Google Scholar 

  18. Aldmour, I. A., Al-Begain, K., & Zreikat, A. (2006). Capacity bounds analysis of switched beam smart antennas in CDMA systems. In Proc. of the 9th International Conference on Computer Modeling and Simulation(pp. 91–96). Oxford, England, April 2006.

  19. Mietzner J., Hoeher P. (2004). Boosting the performance of wireless communication systems: Theory and practice of multiple-antenna techniques. IEEE Communications magazine 42(10): 40–47

    Article  Google Scholar 

  20. Osseiran, A., Ericson, M., Barta, J., Goransson, B., & Hagerman, B. (2001). Downlink capacity comparison between different smart antenna concepts in a mixed service W-CDMA system. IEEE Vehicular Technology Conference, VTC 2001, 54th, Vol.3, Atlantic City, pp. 1528–1532, Oct. 2001.

  21. Viterbi A. (1995). CDMA:Principles of spread spectrum communications. USA, Addison-Wesley Longman

    MATH  Google Scholar 

  22. Schüler, J., Begain, K., Ermel, M., Müller, T., & Schweigel, M. (2000). Performance analysis of A single UMTS cell. In Proceedings of the European Wireless Conference, (pp. 281–286). Dresden, Germany.

  23. Zreikat, A., Al-Begain, K., & Smith, K. (2004). Comparative capacity/coverage analysis for CDMA cell in different propagation environments. Journal of Wireless Personal Communications (Vol. 28, No. 3, pp. 205–231) Kluwer Academic Publishers, Feb. 2004.

  24. Zreikat, A. (2003). Performance evaluation of wireless mobile networks, capacity bounds and call admission control algorithms for wider mobile networks in different propagation environments. PhD thesis, University of Bradford.

  25. C05T231 (1999). Digital Mobile Radio: Towards Future Generation Systems. Final Report. EUR18957. Chapter 4.

  26. Wesolowski K. (2002). Mobile Communication Systems. England, John Wiley & Sons

    Google Scholar 

  27. Perini P.L., Holloway C.L. (1998). Angle and space diversity comparisons in different mobile radio environments. IEEE Transactions on Antennas and Propagation 46(6): 764–775

    Article  Google Scholar 

  28. Lee, D.-H., Lee, S.-K., Kim, B., Lee, J.-H., & Ko, H. -L. (2004). Angle and space diversity comparisons in the urban area. IEEE 60th Vehicular Technology Conference, VTC2004, 1, 125–128, Sept. 2004.

  29. 3GPP, TS 25.942 (2001). RF System Scenarios. V3.1.0., June 2001.

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Authors and Affiliations

  1. Faculty of Advanced Technology, University of Glamorgan, Pontypridd, CF37-1DL, UK

    Ismat A. Aldmour & Khalid Al-Begain

  2. Mu’tah University, P.O. Box 7, Mu’tah-Karak, 61710, Jordan

    Aymen I. Zreikat

Authors
  1. Ismat A. Aldmour
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  2. Khalid Al-Begain
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  3. Aymen I. Zreikat
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Correspondence to Ismat A. Aldmour.

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Aldmour, I.A., Al-Begain, K. & Zreikat, A.I. Uplink Capacity/Coverage Analysis of WCDMA with Switched Beam Smart Antennae. Wireless Pers Commun 43, 1705–1715 (2007). https://doi.org/10.1007/s11277-007-9337-5

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  • DOI: https://doi.org/10.1007/s11277-007-9337-5

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