Three artificial-noise-aided secure transmission schemes in wiretap channels

Shihao Yan, Nan Yang, Ingmar Land, Robert Malaney, Jinhong Yuan

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


We examine the secrecy performance of three artificial-noise-aided secure transmission schemes, namely, the partially adaptive, fully adaptive, and ON-OFF schemes. To this end, we provide new analysis to facilitate the optimization of the fraction φ of the transmit power allocated to the useful signal and redundancy rate RE . Surprisingly, our examination indicates that the partially adaptive scheme, in which only the codeword rate RB varies with the instantaneous channel gains, significantly outperforms the ON-OFF scheme, in which both RB and RE vary. This performance gain can be characterized in terms of a higher average secrecy rate, subject to an upper bound on the secrecy outage probability. Furthermore, our results also demonstrate that the partially adaptive scheme can achieve almost the same secrecy performance as the fully adaptive scheme, which is of a much higher complexity, where φ, RB , and RE all vary with the instantaneous channel gains.
Original languageEnglish
Pages (from-to)3669-3673
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Issue number4
Publication statusPublished - Apr 2018
Externally publishedYes


  • Artificial noise
  • Physical layer security
  • power allocation
  • secure transmission
  • wiretap code rates


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