Capacity in a CDMA macrocell with a hotspot microcell: Exact and approximate analyses

S. Kishore, L. J. Greenstein, H. Vincent Poor, S. C. Schwartz

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


This paper studies the number of voice users supported on the uplink (user capacity) of a single-macrocell single-microcell CDMA system. A "hotspot" microcell is embedded within a larger macrocell and operates over the same bandwidth as the larger cell. Analytic methods are presented for computing user capacity which account for propagation loss, multiple-access interference, power-control, and random locations of users terminals, as well as two distinct methods by which users select base stations (tiers). Along with the exact user capacity, a technique for making reliable approximations is also presented. Simulation results verify both the exact and approximate analytical methods. This simulation is also employed to study capacity gains of a third, more optimal, tier-selection scheme. The results point to differences in capacity performance based on the tier-selection method as well as on the traffic density within the hotspot region.

Original languageEnglish (US)
Article number134
Pages (from-to)1172-1176
Number of pages5
JournalIEEE Vehicular Technology Conference
Issue number54ND
StatePublished - Jan 1 2001

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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