Uplink throughput in a single-macrocell/single-microcell CDMA system with application to data access points

Shalinee Kishore, Stuart C. Schwartz, Larry J. Greenstein, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This paper studies a two-tier code-division multiple-access (CDMA) system in which the microcell base is converted into a data access point (DAP), i.e., is a limited-range base station that provides high-speed access to one user at a time. The microcell (or DAP) user operates on the same frequency as the macrocell users and has the same chip rate. However, it adapts its spreading factor, and thus its data rate, in accordance with interference conditions. By contrast, the macrocell serves multiple simultaneous data users, each with the same fixed rate. The achievable throughput for individual microcell users is examined and a simple accurate approximation for its probability distribution is presented. Computations for average throughputs, both per-user and total, are also presented. The numerical results highlight the impact of a desensitivity parameter used in the base-selection process.

Original languageEnglish (US)
Pages (from-to)1302-1306
Number of pages5
JournalIEEE Transactions on Wireless Communications
Volume4
Issue number4
DOIs
StatePublished - Jul 1 2005

All Science Journal Classification (ASJC) codes

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

Keywords

  • CDMA
  • Data access points
  • Macrocell
  • Microcell
  • Throughput

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