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Secure Communications for the Two-User Broadcast Channel With Random Traffic

Secure Communications for the Two-User Broadcast Channel With Random Traffic
Mohapatra, P.Pappas, N.Lee, Je MinQuek, T.Q.S.Angelakis, V.
DGIST Authors
Mohapatra, P.; Pappas, N.; Lee, Je Min; Quek, T.Q.S.; Angelakis, V.
Issue Date
IEEE Transactions on Information Forensics and Security, 13(9), 2294-2309
Article Type
Article; Proceedings Paper
Author Keywords
DecodingInterferenceJammingReceiversStability analysisThroughputTransmitters
In this work, we study the stability region of the two-user broadcast channel (BC) with bursty data arrivals and security constraints. It is assumed that one of the receivers has a secrecy constraint, i.e., its packets need to be kept secret from the other receiver, which is defined based on SINR. The receiver with secrecy constraint has full-duplex capability to send a jamming signal for improving its service rate. The stability region of the two-user BC with secrecy constraint is characterized for the general decoding case. Then, assuming two different decoding schemes the respective stability regions are derived. The fullduplex operation of receiver results in self-interference, and the effect of imperfect self-interference cancelation on the stability region is also investigated. The stability region of the BC with a secrecy constraint, where the receivers do not have full duplex capability can be obtained as a special case of the results derived in this paper. In addition, the paper considers the problem of maximizing the saturated throughput of the queue for which there is no secrecy constraint under minimum service guarantees for the other queue. The results provide new insights on the effect of the secrecy constraint on the stability region of the BC. It is found that the stability region with secrecy constraint is sensitive to the degree of self-interference cancelation. IEEE
Institute of Electrical and Electronics Engineers Inc.
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Department of Information and Communication EngineeringISC(Information Security and Communication) Lab1. Journal Articles

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