Optimal resource allocation for data service in CDMA reverse link

Danlu Zhang, Seong Jun Oh, Naga Bhushan

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The optimal resource allocation policy is studied for non-real-time users in CDMA reverse link. The resource allocation policy of interest includes channel coding, spreading gain control and power allocation under the conventional receiver operation. The constraints in the optimization include peak transmit power of the mobile station, total received power at the base station and QoS in the form of minimum SINR for each user. The coding and spreading gain control can be separated from the power allocation strategy. Our results show that the optimal power allocation policy depends on the objective function: a greedy policy is optimal to maximize the sum of throughput from each user, whereas a fair policy is optimal to maximize the product of throughput from each user. A unified approach is taken to derive the optimal policies, and it can also be applied to other power allocation problems in CDMA reverse link. Numerical results of the channel capacity are presented for both objectives along with the effect of QoS constraints.

Original languageEnglish
Pages (from-to)3648-3656
Number of pages9
JournalIEEE Transactions on Wireless Communications
Volume6
Issue number10
DOIs
Publication statusPublished - 2007 Oct 1

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Keywords

  • Code division multiaccess
  • Information rates
  • Land mobile radio cellular systems
  • Nonlinear programming
  • Resource management

ASJC Scopus subject areas

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

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