Abstract
In this letter, we investigate the ergodic secrecy sum rate of a two-way relay NOMA system. In particular, by considering decode-and-forward signal processing at the relay and selection combining at the eavesdropper, we derive a tight closed-form ergodic secrecy sum rate expression for the considered system. We demonstrate effects of the main link and eavesdropper link on the ergodic secrecy sum rate. The results reveal that the ergodic secrecy sum rate performance degrades when the eavesdropper is closer to one of the users. Numerical and simulation results corroborate our theoretical findings.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
