Frameworks of non-orthogonal multiple access techniques in cognitive radio communication systems

Prabhat Thakur, Alok Kumar, S. Pandit, G. Singh, S. N. Satashia

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Recently, the increasing demand of radio spectrum for the next generation communication systems due to the explosive growth of applications appetite for band-widths has led to the problem of spectrum scarcity. The potential approaches among the proposed solutions to resolve this issue are well explored cognitive radio (CR) technology and recently introduced non-orthogonal multiple access (NOMA) techniques. Both the techniques are employed for efficient spectrum utilization and assure the significant improvement in the spectral efficiency. Further, the significant improvement in spectral efficiency can be achieved by combining both the techniques. Since the CR is well-explored technique as compared to that of the NOMA in the field of communication, therefore it is worth and wise to implement this technique over the CR. In this article, we have presented the frameworks of NOMA implementation over CR as well as the feasibility of proposed frameworks. Further, the differences between proposed CR-NOMA and conventional CR frameworks are discussed. Finally, the potential issues regarding the implementation of CR-NOMA are explored.

Original languageEnglish
Article number8753469
Pages (from-to)129-149
Number of pages21
JournalChina Communications
Issue number6
Publication statusPublished - Jun 2019


  • channel state information
  • cognitive radio
  • non-orthogonal multiple access
  • power division multiple access
  • successive-interference-cancellation
  • superposition-coding

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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