Location-aware downlink and uplink power control and throughput optimization in cellular cognitive radio networks

Zhiyao Ma, Wei Chen, Zhigang Cao, Khaled Ben Letaief

Research output: Contribution to journalArticle


In this paper, we consider throughput maximization in cognitive radio systems with proper power control. In particular, we incorporate location-awareness into the power control design and maximize the average throughput of the cognitive system. As we shall show, the proposed approach effectively utilizes the "spatial opportunity" to maximize the system throughput, which clearly outperforms traditional power control methods. Further, the proposed approach still exhibits significant throughput gain even considering imperfect position information, with appropriate robust design modifications.

Original languageEnglish
Pages (from-to)441-448
Number of pages8
JournalFrontiers of Electrical and Electronic Engineering in China
Issue number4
Publication statusPublished - 1 Dec 2010



  • cognitive radios
  • localization
  • optimization
  • power control
  • spectrum hole

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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