A novel power control scheme for multimedia CDMA transmission

Min Kuan Chang, Chang-Su Kim, C. C. Jay Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


A new power control scheme for downlink CDMA transmission by using an outage probability criterion is proposed in this research. We first analyze the outage probability when data are transmitted over shadowing and Rayleigh fading channels. Then, the power is assigned to each link of the system so that the overall outage probability is minimized subject to three constraints. They are the total transmission power at the base station, the maximum transmission power for each user, and the maximum tolerable outage probability for each user. The Newton-Raphson algorithm is modified to solve the minimization problem under these constraints. Experimental results demonstrate that the proposed algorithm is capable of differentiating QoS requirements for each link in addition to improving the throughput of the system.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsV K Garg, C R Nassar, S J Shattil
Number of pages12
Publication statusPublished - 2001
Externally publishedYes
EventEnabling Technologies for 3G and Beyond - Denver, CO, United States
Duration: 2001 Aug 222001 Aug 23


OtherEnabling Technologies for 3G and Beyond
CountryUnited States
CityDenver, CO



  • Newton-Raphson algorithm
  • Power control
  • QoS
  • W-CDMA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Chang, M. K., Kim, C-S., & Jay Kuo, C. C. (2001). A novel power control scheme for multimedia CDMA transmission. In V. K. Garg, C. R. Nassar, & S. J. Shattil (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4529, pp. 57-68) https://doi.org/10.1117/12.447384