Security Provisioning for Non-Orthogonal Multiple Access Networks with Limited Feedback

Dawei Wang, Woping Xu, Wei Liang, Zhiguo Ding, Lixin Li

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In this letter, we Investigate the Information security problem for non-orthogonal multiple access (NOMA) networks against an external eavesdropper. Considering the overhead of the channel state Information (CSi) feedback, we utilize the quantized CSi during the secure NOMA transmission, and derive the secrecy rate for each receiver by adopting the successive Interference cancellation. In order to optimally allocate the transmit power, an optimization problem Is formulated such that the minimum secrecy rate of the receivers Is maximized. For the proposed scheme, we also analyze the secrecy outage and transmission outage probabilities, and their closed-form expressions are derived. In addition, the security-reliability tradeoff Is analyzed. Numerical results are demonstrated to verify the analytical results.

Original languageBritish English
Article number9060921
Pages (from-to)1226-1229
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number8
StatePublished - Aug 2020


  • NOMA
  • Power allocation
  • security


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