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DS-CDMA system outer loop power control and improvement for multi-service * * This project was supported by the National Natural Science Foundation of China (60532030).

  • Guan Mingxiang*
  • , Guo Qing
  • , Li Xing
  • *Corresponding author for this work
  • School of Electronics and Information Engineering, Harbin Institute of Technology
  • Huawei Technologies Co., Ltd.

Research output: Contribution to journalArticlepeer-review

Abstract

When a new user accesses the CDMA system, the load will change drastically, and therefore, the advanced outer loop power control (OLPC) technology has to be adopted to enrich the target signal interference ratio (SIR) and improve the system performance. The existing problems about DS-CDMA outer loop power control for multi-service are introduced and the power control theoretical model is analyzed. System simulation is adopted on how to obtain the theoretical performance and parameter optimization of the power control algorithm. The OLPC algorithm is improved and the performance comparisons between the old algorithm and the improved algorithm are given. The results show good performance of the improved OLPC algorithm and prove the validity of the improved method for multi-service.

Original languageEnglish
Pages (from-to)453-460
Number of pages8
JournalJournal of Systems Engineering and Electronics
Volume19
Issue number3
DOIs
StatePublished - Jun 2008
Externally publishedYes

Keywords

  • DS-CDMA
  • multi-service
  • outer loop power control
  • performance

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