BER analysis of non-orthogonal multiple access-based cognitive butterfly network

Ustunbas S., Aygölü H. Ü.

ELECTRONICS LETTERS, vol.56, no.7, pp.357-359, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56 Issue: 7
  • Publication Date: 2020
  • Doi Number: 10.1049/el.2019.3618
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Applied Science & Technology Source, Business Source Elite, Business Source Premier, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, zbMATH
  • Page Numbers: pp.357-359
  • Istanbul Technical University Affiliated: Yes


In this Letter, the non-orthogonal multiple access (NOMA) technique is applied to the cognitive butterfly network, where a secondary relay assists a primary transmitter-receiver pair in the lack of a direct link between them to realise spectrum sharing for a secondary transmitter-receiver pair. In this network, the uplink and downlink NOMA principles are combined and the side information from the nearer transmitters is exploited for better successive interference cancellation (SIC) at the receivers. The end-to-end bit error probability (BEP) is analytically derived for both users and the results are approved via computer simulations by considering imperfect SIC. The better BEP performance provided by NOMA compared to a reference orthogonal multiple access protocol is demonstrated.