Browse > Article

Effect of Cell Shape on Design of CDMA Systems for Urban Microcells  

Min, Seung-Wook (상명대학교 소프트웨어대학 소프트웨어학부)
Choi, Gin-Kyu (홍익대학교 전자전기컴퓨터공학부 전자공학)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.3B, 2007 , pp. 153-160 More about this Journal
Abstract
Placing antennas of low power base stations below surrounding buildings, as in urban microcells, makes propagation characteristics strongly dependent on the building environment. As a result, propagation in these urban microcells is non-isotropic, so that the assumption of circular cells used in planning of conventional cellular sys toms is no longer valid. Assuming circular cells leads to a more conservative system design, implying more base stations. This work investigates the effect of cell shape, due to non-isotropic propagation, on the out-of-cell interference and Erlang capacity of CDMA system. Propagation is described by measurement derived models for low antennas in a rectangular urban street grid. The analysis is done for soft handoff protocols.
Keywords
Cell Planing; Microcells; CDMA System Design; System Capacity; Handoff; Non-Isotropic Propagation Model; Cell Shape Factor;
Citations & Related Records
연도 인용수 순위
  • Reference
1 B.T. Ahmed, M.C. Ramon, and LH. Ariet, Capacity and interference statistics of Highways W-CDMA Cigar-shaped microcells (Uplink analysis),' IEEE Comm. Letters, vol. 6, no. 5, pp. 172-174, May 2002   DOI   ScienceOn
2 M. Chopra, K. Rohani and J. R. Reed, 'Analysis ofCDMA Range Extension due to Soft Handoff,' 45th VTC, Chicago, IL, pp.917-921, July 1995
3 D. Har and H.L. Bertoni, 'Effect of anisortropic propagation modeling on microcellular system design,' IEEE Trans. Veh. Techonl., vol. 49, no. 3, pp. 1303-1313, May 2000   DOI   ScienceOn
4 A. M. Viterbi and A. J. Viterbi, 'Erlang Capacity of a Power Controlled CDMA System,' IEEE J. Sel. Areas Comm., Vol. 11, No. 6, pp.892-899, August 1993   DOI   ScienceOn
5 H. H. Xia, H. L. Bertoni, L. R. Maciel, A. L. Stewart and R. Rowe, 'Radio Propagation Characteris for LOS Microcellular Mobile and Personal Communications', IEEE Trans. Antennas and Propagations, Vol. 4, NO. 10, Oct. 1993
6 A. J. Viterbi et al., 'Soft Handoff Extends CDMA Cell Coverage and Increases Reverse Link Capacity,' IEEE J. Sel. Areas Comm., Vol. 12, No. 8,pp1281-1288 Oct., 1994   DOI   ScienceOn
7 A. J. Viterbi, CDMA Principles of Spread Spectrum Communication, Addison Wesley 1995
8 C.S. Kang, H.-S. Cho, and D.K. Sung, 'Capacity analysis of spectrally overlaid macro/microcellular CDMA systems supporting multiple types of traffic,' IEEE Trans. Veh. Technol., vol. 52, no. 2, pp. 333-345, March 2003   DOI   ScienceOn
9 D. Har ,H. L. Bertoni, and S. Kim 'Effect of Propagation Modeling on LOS Microcellular System Design' IJWIN, Vol.4, No.2, pp. 113-123, 1997
10 K. S. Gilhousen et al., 'On the Capacity of a Cellular CDMA Systems,' IEEE Trans. Veh. Technol., vol. 40, no. 2, pp. 303-312, May 1991   DOI   ScienceOn
11 H.-S. Cho; M.Y. Chung, S.H. Kang, and D.K. Sung; 'Performance analysis of cross- and cigar-shaped urban microcells considering user mobility characteristics,' IEEE Trans. Veh. Technol., vol. 49, no. 1, pp. 105-116, Jan 2000   DOI   ScienceOn
12 D.H. Kim, D.D. Lee, H.J. Kim, and K.C. Whang, 'Capacity analysis of macro/microcellular CDMA with power ratio control and tilted antenna' IEEE Trans. Veh. Technol., vol. 49, no. 1, pp. 34-42, Jan. 2000   DOI   ScienceOn
13 D. Har, H. H. Xia, and H.L. Bertoni, 'Path-loss prediction model for microcells,' IEEE Trans. Veh. Technol., vol.48, no. 5, pp. 1453-1462, Sept. 1999   DOI   ScienceOn
14 D. Har, 'Effect of Propagation Modeling on Microcellular System Design', Ph.D. Dissertation, Polytechnic University, May, 1997
15 H. L. Bertoni, W. Honcharenko, L. R. Maciel and H. H. Xia, 'UHF Propagation Prediction for Wireless Personal Communications' Proc. IEEE, vol. 82, pp. 1333-1359, 1994