Power control for CDMA cellular radio systems via ℓ 1 optimal predictor

Bor Sen Chen*, Bore Kuen Lee, Yuan Hn Chen

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

7 Scopus citations

Abstract

In direct-sequence code division multiple access (DS-CDMA) cellular radio systems, power control is an important means to achieve higher communication link quality and larger system capacity. In order to track a desired signal-to-interference-plus-noise ratio (SINR) under round-trip delay, multiple access interference (MAI), channel fading, and noise, a robust state feedback control via a desired pole (eigenvalue) placement and an i\ optimal prediction is proposed for power control of CDMA systems. The ℓ 1 predictor is used to predict the tracking error to compensate for the effect of round-trip delay, such that the peak of prediction error due to the uncertainties of channel fading, interference, and noise is as small as possible. Then the optimal ℓ 1 predictor design problem is transformed to a suboptimal prediction problem by minimizing the upper bound of the ℓ 1 norm of SINR tracking error and solving the eigenvalue problem (EVP) under some linear matrix inequality (LMI) constraints. Under the proposed framework, the global information of the channel gains of all users in the CDMA system is not required.

Original languageEnglish
Article number1705953
Pages (from-to)2914-2922
Number of pages9
JournalIEEE Transactions on Wireless Communications
Volume5
Issue number10
DOIs
StatePublished - 10 2006
Externally publishedYes

Keywords

  • Code division multiaccess
  • LMI
  • Power control
  • ℓ prediction control

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