Temporal spectrum sharing based on primary user activity prediction

Ki Won Sung, Seong Lyun Kim, Jens Zander

Research output: Contribution to journalArticle

57 Citations (Scopus)


In this paper we investigate the opportunistic spectrum access in temporal domain where a secondary user shares a radio channel with a primary user during the OFF period of the primary user. We consider practical ON/OFF traffic models whose bursty natures are not properly described by a Markovian assumption. An optimal strategy to determine the transmission power of the secondary user is proposed, which can be adapted to any source traffic model of the primary user. This strategy will maximize the spectrum utilization of the secondary user while keeping interference violations to the primary user below a threshold. Numerical results show that the transmission power of the secondary user depends on the probability distribution of the primary traffic as well as the elapsed time of the OFF period.

Original languageEnglish
Article number5608477
Pages (from-to)3848-3855
Number of pages8
JournalIEEE Transactions on Wireless Communications
Issue number12
Publication statusPublished - 2010 Dec 1


All Science Journal Classification (ASJC) codes

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

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