On secure underlay MIMO cognitive radio networks with energy harvesting and transmit antenna selection

Hongjiang Lei, Ming Xu, Imran Shafique Ansari, Gaofeng Pan, Khalid Qaraqe, Mohamed Slim Alouini

Research output: Contribution to journalArticle

44 Citations (Scopus)


In this paper, we consider an underlay multiple-input-multiple-output (MIMO) cognitive radio network (CRN) including a pair of primary nodes, a couple of secondary nodes, and an eavesdropper, where the secondary transmitter is powered by the renewable energy harvested from the primary transmitter in order to improve both energy efficiency and spectral efficiency. Based on whether the channel state information of wiretap links are available or not, the secrecy outage performance of the optimal antenna selection (OAS) scheme and suboptimal antenna selection (SAS) scheme for underlay MIMO CRN with energy harvesting are investigated and compared with traditional space-time transmission scheme. The closed-form expressions for exact and asymptotic secrecy outage probability are derived. Monte-Carlo simulations are conducted to testify the accuracy of the analytical results. The analysis illustrates that the OAS scheme outperforms SAS scheme. Furthermore, the asymptotic result shows that no matter which scheme is considered, the OAS and SAS schemes can achieve the same secrecy diversity order.

Original languageEnglish
Article number7882641
Pages (from-to)192-203
Number of pages12
JournalIEEE Transactions on Green Communications and Networking
Issue number2
Publication statusPublished - 1 Jun 2017



  • cognitive radio networks
  • energy harvesting
  • Multiple-input-multiple-output
  • secrecy outage performance
  • transmit antenna selection

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Renewable Energy, Sustainability and the Environment

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