WU Ya-feng, ZHAO Rui, HE Yu-cheng, et al. Performance Analysis of Physical Layer Security of Untrusted Relay System Based on Limited Feedback[J]. Acta Electronica Sinica, 2015, 43(11): 2247-2254.
WU Ya-feng, ZHAO Rui, HE Yu-cheng, et al. Performance Analysis of Physical Layer Security of Untrusted Relay System Based on Limited Feedback[J]. Acta Electronica Sinica, 2015, 43(11): 2247-2254. DOI: 10.3969/j.issn.0372-2112.2015.11.017.
Under the condition of partial channel state information that is obtained from limited feedback
a physical layer security transmission technique is investigated for amplify-and-forward untrusted relay systems
where the positive secrecy capacity is obtained through the artificial noise interference information transmitted by the destination node.Closedform expressions for security outage probability and transmission outage probability are derived
and the impacts of the number of feedback bits on security and reliability are analyzed.Furthermore
an adaptive selection scheme for the optimal number of feedback bits is proposed in order to simultaneously satisfy both required security and reliability.