Security Performance Analysis of Underlay Cognitive Networks with Helpful Jammer Under Interference from Primary Transmitter

  • Khuong Ho-VanEmail author
  • Thiem Do-Dac


Interference from primary transmitters in underlay cognitive networks is practically neither neglected nor integrated into noise terms although most literature inversely addressed. This paper firstly employs a helpful jammer to secure information transmission of a secondary transmitter. Then, its efficacy through secrecy outage probability under practical considerations consisting of exponentially distributed interference from primary transmitter, peak transmission power limitation, interference power limitation, and Rayleigh fading channels are analytically assessed. Finally, results are provided to illustrate significant security performance improvement thanks to exploiting the jammer while considerable security performance degradation due to interference from primary transmitter.


Security performance Primary transmitter Jammer 



This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 102.04-2017.01


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Ho Chi Minh City University of Technology, VNU-HCMHo Chi Minh CityVietnam
  2. 2.Thu Dau Mot UniversityThu Dau Mot CityVietnam

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