A Study on the WBTC and NBTC for CDMA Mobile Communications Networks

  • Sun-Kuk Noh
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3981)


Cell sectorization and improvement of the Chip Energy/Others Interference(Ec/Io) are technologies to offer good quality of services (QoS) and coverage for new and sophisticated power control to achieve high capacity in CDMA cellular mobile communication networks. In this paper, in order to efficient cell sector and to improve the Ec/Io of the pilot channel in CDMA mobile communication systems, I analyze and compare the wide-beam trisector cell(WBTC) with the narrow-beam trisector cell(NBTC) as a method for cell sectorization. The NBTC was compared with the WBTC, using the results of a theoretical analysis, a simulation, a field measurement, in order to examine its effectiveness and validity. As a result, I confirmed that NBTC was efficient cell sector method to minimize interference from adjacent base stations and to increase cell coverage.


Mobile Communication Channel Capacity Channel Assignment Directional Antenna Speech Quality 
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. Ahmad, A.: A CDMA Network Architecture Using Optimized Sectoring. IEEE Trans. Veh. Technol. 51, 404–410 (2002)CrossRefGoogle Scholar
  2. Lee, C.Y., Kang, H.G., Park, T.: A Dynamic Sectorization of Microcells for Balanced Traffic in CDMA: Genetic Algorithms Approch. IEEE Trans. Veh. Technol. 51(1), 63–72 (2002)CrossRefGoogle Scholar
  3. Ng, B.K., Sousa, E.S.: Performance Enhancement of DS-CDMA System Using Overlapping Sectors With Interference Avoidance. IEEE Trans. Wireless Commum. 2(1), 175–185 (2003)CrossRefGoogle Scholar
  4. Wang, L.C., Leung, K.K.: A high-capacity wireless network by quad-sector cell and interleaved channel assignment. IEEE Journal on selected areas in comm. 18(3), 472–480 (2000)CrossRefGoogle Scholar
  5. Wang, L.C., Chawal, K.C., Greenstein, L.J.: Performance studies of narrow beam trisector cellular systems. Int., J. Wireless Information Networks 2, 89–102 (1998)CrossRefGoogle Scholar
  6. Wang, L.C., Leung, K.K.: Performance enhancement by narrow-beam quad-sector cell and interleaved channel assignment in wireless networks. In: Global Tel. Conf., pp. 2719–2724 (1999)Google Scholar
  7. Wang, L.C.: A new cellular architecture based on an interleaved cluster concept. IEEE Transactions on Vehicular Technology 48(6), 1809–1818 (1999)CrossRefGoogle Scholar
  8. Chen, G.K.: Effects of Sectorization on the Spectrum Efficiency of Cellular Radio Systems. IEEE Transactions on Vehicular Technology 41(3), 217–225 (1992)CrossRefGoogle Scholar
  9. MacDonald, V.H.: The Cellular Concept. Bell System Technology Journal 58, 15–42 (1992)Google Scholar
  10. Pattan, B.: Robust Modulation Methods and Smart Antennas in Wireless Communication, pp. 209–214. Prentice Hall PTR, Englewood Cliffs (2000)Google Scholar
  11. Miceli, A.: Wireless Technician’s Handbook, pp. 27–46. Artech House (2000)Google Scholar
  12. Xiang, J.: A novel two site frequency reuse plan. In: Proc. IEEE Vehicular Technology Conf., pp. 441–445 (1996)Google Scholar
  13. Chan, G.K.: Effecets of sectorization on the spectrum efficiency of cellular radio systems. IEEE Trans. Veh. Technol. 41, 217–225 (1992)CrossRefGoogle Scholar
  14. Balanis, C.: Antenna Theory. Harper & Row Publishers, New York (1982)Google Scholar
  15. Gilhousen, K.S., Jacobs, I.M., Padovani, R., Viterbi, A., Weaver, L.A., Wheatley III, C.E.: On the capacity of a cellular CDMA System. IEEE Transactions on Vehicular Technology 40(2), 303–312 (1991)CrossRefGoogle Scholar
  16. Okumura, Y., Ohmori, E., Kawano, T., Fukuda, K.: Field strength and its variability in VHF and UHF land-mobile radio service. Rev. Elec. Commun. Lab. 16, 825–873 (1968)Google Scholar
  17. Hata, M.: Empirical formula for propagation loss in land mobile radio service. IEEE Trans. Veh. echnol. VT-29, 317–325 (1980)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Sun-Kuk Noh
    • 1
  1. 1.Dept. of Radio Mobile Communication EngineeringHonam UniversityRepublic of Korea

Personalised recommendations