A distributed SIR-based power control algorithm for WCDMA systems

Gaurav P. Mandhare, Ali Ghrayeb

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

Abstract

Power control has been an important issue in multiple access systems allowing more users to share the system resources. The capacity of the WCDMA system is limited by the total interference, called multiple access interference (MAI). An efficient power control algorithm is always required to improve the system performance. In this paper, we propose a distributed, first order power control algorithm. The proposed algorithm uses an exponential function with a modified form of the LMS algorithm in order to achieve a better speed of convergence. We examine the proposed algorithm for time varying multipath Rayleigh fading environment. We compare the performance of the proposed algorithm and the 3GPP standard algorithm. We demonstrate that the proposed algorithm achieves better convergence and saves on the signal-to-noise ratio (SNR) required to achieve a certain performance. We also demonstrate that the proposed algorithm works well for different mobile speeds with a continuously changing channel.

Original languageEnglish
Title of host publication2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
Pages600-604
Number of pages5
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall - Montreal, QC, Canada
Duration: 25 Sep 200628 Sep 2006

Other

Other2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
CountryCanada
CityMontreal, QC
Period25/9/0628/9/06

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ASJC Scopus subject areas

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

Cite this

Mandhare, G. P., & Ghrayeb, A. (2006). A distributed SIR-based power control algorithm for WCDMA systems. In 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall (pp. 600-604). [4109398] https://doi.org/10.1109/VTCF.2006.133