Optimal resource allocation in multiservice CDMA networks

Seong Jun Oh, Danlu Zhang, Kimberly M. Wasserman

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


This paper addresses the problem of dynamic resource allocation in a multiservice direct-sequence code-division multiple-access (DS-CDMA) wireless network supporting real-time (RT) and nonreal-time (NRT) communication services. For RT users, a simple transmission power allocation strategy is assumed that maximizes the amount of capacity available to NRT users without violating quality of service requirements of RT users. For NRT users, a joint transmission power and spreading gain (transmission rate) allocation strategy, obtained via the solution of a constrained optimization problem, is provided. The solution maximizes the aggregate NRT throughput, subject to peak transmission power constraints and the capacity constraint imposed by RT users. The optimization problem is solved in a closed form, and the resulting resource allocation strategy is simple to implement as a hybrid CDMA/time-division multiple-access strategy. Numerical results are presented showing that the optimal resource allocation strategy can offer substantial performance gains over other conventional resource allocation strategies for DS-CDMA networks.

Original languageEnglish
Pages (from-to)811-821
Number of pages11
JournalIEEE Transactions on Wireless Communications
Issue number4
Publication statusPublished - 2003 Jul
Externally publishedYes


  • Capacity
  • Code division multiple access (CDMA)
  • Power control
  • Rate control
  • Resource management

ASJC Scopus subject areas

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


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