Uplink Link Capacity of DS-CDMA Packet Mobile Communications with Rake Combining and Transmit Power Control

Zhi Sen Wang, Eisuke Kudoh, Fumiyuki Adachi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Without transmit power control (TPC) and Rake combining, the uplink capacity of a direct sequence code division multiple access (DS-CDMA) packet mobile communication system significantly degrades due to the near-far problem and multipath fading. In this letter, assuming a single cell system with an interference-limited channel, the impact of the joint use of Rake combining and TPC on the uplink capacity is evaluated by computer simulation. Slow TPC is found to give a link capacity larger than fast TPC. This is because, with slow TPC, the received signal power variations due to fading remain intact and this results in a larger capture effect.

Original languageEnglish
Pages (from-to)2203-2206
Number of pages4
JournalIEICE Transactions on Communications
VolumeE86-B
Issue number7
Publication statusPublished - 2003 Jul

Keywords

  • Capture effect
  • DS-CDMA
  • Link capacity
  • Packet communication
  • Rake combining
  • Transmit power control

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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