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An Examination of Outage Performance for Selected Relay and Fixed Relay in Cognitive Radio-Aided NOMA

  • Tam Nguyen KieuEmail author
  • Hong Nhu Nguyen
  • Long Nguyen Ngoc
  • Tu-Trinh Thi Nguyen
  • Jaroslav Zdralek
  • Miroslav Voznak
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 554)

Abstract

In this paper, we consider impacts of relay selection scheme on primary network performance in cognitive radio (CR) assisted non-orthogonal multiple access (NOMA). We suggest relay selection model to improve the outage performance at primary network. In this model, the fixed power allocation in NOMA is deployed to achieve considered simulation results. To completely study the profits of the NOMA scheme, we derive closed-form formula for the outage probability. We find that the CR-NOMA enhances its performance as suitable selection of relay intending to forward signal to NOMA users. It is shown several performance comparison in such CR-NOMA as varying the target rates at relay and destination. Numerical results are extensively studied to confirm that our proposed CR-NOMA outperforms the other designs in terms of outage probability.

Keywords

Non-orthogonal multiple access (NOMA) Decode-and-forward (DF) Primary network Outage probability 

Notes

Acknowledgment

This research received funding from the grant No. SP2018/59 conducted by VSB-Technical University of Ostrava, Czech Republic.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Tam Nguyen Kieu
    • 1
    • 2
    Email author
  • Hong Nhu Nguyen
    • 1
  • Long Nguyen Ngoc
    • 1
  • Tu-Trinh Thi Nguyen
    • 3
  • Jaroslav Zdralek
    • 1
  • Miroslav Voznak
    • 1
  1. 1.VSB-Technical University of OstravaOstravaCzech Republic
  2. 2.Ton Duc Thang UniversityHo Chi Minh CityVietnam
  3. 3.Faculty of Electronics TechnologyIndustrial University of Ho Chi Minh CityHo Chi Minh CityVietnam

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