On the secrecy capacity of the broadcast wiretap channel with imperfect channel state information
Type
Conference PaperKAUST Department
Communication Theory LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2014-12Permanent link to this record
http://hdl.handle.net/10754/565011
Metadata
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In this paper, we consider secure broadcasting over fast fading channels. Assuming imperfect main channel state information (CSI) at the transmitter, we first provide an upper and a lower bounds on the ergodic secrecy capacity when a common message is broadcasted to multiple legitimate receivers in the presence of one eavesdropper. For this case, we show that the secrecy rate is limited by the legitimate receiver having, on average, the worst main channel link. Then, we present an expression for the achievable secrecy sum-rate when each legitimate receiver is interested in an independent message. The special cases of high SNR, perfect and no-main CSI are also analyzed. Numerical results are presented to illustrate the obtained results for the case of independent but not necessarily identically distributed Rayleigh fading channels.Citation
Hyadi, A., Rezki, Z., Khisti, A., & Alouini, M.-S. (2014). On the secrecy capacity of the broadcast wiretap channel with imperfect channel state information. 2014 IEEE Global Communications Conference. doi:10.1109/glocom.2014.7037038Conference/Event name
2014 IEEE Global Communications Conference, GLOBECOM 2014ISBN
9781479935116ae974a485f413a2113503eed53cd6c53
10.1109/GLOCOM.2014.7037038