Reverse link capacity of orthogonal multi-code DS-CDMA with multiple connections

Fumiyuki Adachi

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


DS-CDMA provides a flexible support for the low-to-high bit rate of multimedia services upon a specific user's request. A simple capacity expression is derived for a power-controlled reverse link of orthogonal multi-code DS-CDMA with multiple connections. It is found that an orthogonal multi-code user having multiple connections is equivalent to a single connection user, but with a spreading factor reduced by a factor of the total number of parallel codes and a required signal energy per symbol-to-interference plus noise power spectrum density ratio which is the average taken over multiple connections. Furthermore, the use of antenna diversity is found equivalent to the use of higher spreading factor increased by a factor of the number of antennas.

Original languageEnglish
Pages (from-to)2522-2526
Number of pages5
JournalIEICE Transactions on Communications
Issue number11
Publication statusPublished - 2002 Nov


  • Mobile communication system
  • Orthogonal multi-code system
  • Reverse link capacity

ASJC Scopus subject areas

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


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