Network-Coded Cooperative Systems in Cognitive Radio Networks

Ali Reza Heidarpour, Masoud Ardakani, Chintha Tellambura, Murat Uysal

Research output: Contribution to journalArticlepeer-review


We study the performance of a network-coded cooperative (NCC) system in an underlay cognitive radio network (CRN). The primary network (PN) consists of a single transmitter-receiver pair, and the secondary network (SN) is an NCC system with $N$ users, $M$ relays, and a single destination. The relays employ decode-and-forward (DF) protocol and use network coding (NC). We study the performance of the SN under two types of power constraints: i) the combined peak interference power constraint on the PN and maximum transmit power constraint at the SN; and ii) the single peak interference power constraint on the PN. For the SN, an exact closed-form expression and an asymptotically tight end-to-end outage probability are derived, and the diversity order and coding gain are quantified. Compared to the existing literature, the proposed CRN NCC has four main distinguishable features: i) it applies to general CRN NCC network settings with an arbitrary number of users and relays; ii) it considers general relay selection mechanism and independent and non-identically distributed (i.n.i.d.) $Nakagami-m$ fading channels; iii) it assumes secondary-to-primary and primary-to-secondary interference links; and iv) it provides a generalization of previous work and includes existing results in the literature as special cases.

Original languageEnglish (US)
Pages (from-to)11011-11023
Number of pages13
JournalIEEE Transactions on Wireless Communications
Issue number12
StatePublished - Dec 1 2022


  • Nakagami-m fading
  • Network-coded cooperation
  • cognitive radio networks
  • diversity order
  • outage probability

ASJC Scopus subject areas

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


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