Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Spectrum Usage Efficiency of CDMA System

CDMA 이동통신 시스템의 스펙트럼 이용효율 분석

  • Kim, Jong-Ho (Advanced Radio Technology Departments Radio and Broadcasting Laboratory ETRI) ;
  • Choi, Sang-Sung (Advanced Radio Technology Departments Radio and Broadcasting Laboratory ETRI) ;
  • Lee, Hyung-Soo (Advanced Radio Technology Departments Radio and Broadcasting Laboratory ETRI)
  • 김종호 (전파기반연구부 전파방송연구소 한국전자통신연구원) ;
  • 최상성 (전파기반연구부 전파방송연구소 한국전자통신연구원) ;
  • 이형수 (전파기반연구부 전파방송연구소 한국전자통신연구원)
  • Published : 2003.11.15
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Abstract

In order to assess the spectrum usage efficiency in mobile radio services, we consider the capacity limits of a CDMA system. The maximum achievable capacity per $km^2$ is viewed as a meaningful figure of merit for a cellular system and a method is proposed here to estimate the minimum achievable distance between adjacent base stations in the case of CDMA. The probability for entering in soft handover state is used as a limit for densification in a CDMA system. From this criterion, conditions on the minimum possible cell radius are derived.

Keywords