Uplink capacity enhancement for an integrated HAPS-terrestrial CDMA system

Jeng Ji Huang*, Wei Ting Wang, Huei Wen Ferng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


The integration of a high altitude platform station (HAPS) with existing terrestrial communication systems would be beneficial as several kinds of wireless services can be easily extended into remote areas. In this letter, we first examine the uplink capacity of a sharing-band overlaid HAPS-terrestrial code division multiple access (CDMA) system and an improved version using a doughnut-like cell model. Numerical results indicate that the uplink capacity is poor under both the proposals due to serious inter-system interference. To mitigate this problem, a ring structure is proposed for HAPS when integrated with a terrestrial cellular system.

Original languageEnglish
Pages (from-to)10-12
Number of pages3
JournalIEEE Communications Letters
Issue number1
Publication statusPublished - 2007 Jan


  • CDMA
  • Capacity
  • HAPS
  • Interference

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering


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