Error control systems for digital communication and storage
Error control systems for digital communication and storage
Fundamentals of wireless communication
Fundamentals of wireless communication
Secrecy capacity of a class of broadcast channels with an eavesdropper
EURASIP Journal on Wireless Communications and Networking - Special issue on wireless physical layer security
Information-theoretic key agreement: from weak to strong secrecy for free
EUROCRYPT'00 Proceedings of the 19th international conference on Theory and application of cryptographic techniques
Applications of LDPC Codes to the Wiretap Channel
IEEE Transactions on Information Theory
Wireless Information-Theoretic Security
IEEE Transactions on Information Theory
Secure Broadcasting Over Fading Channels
IEEE Transactions on Information Theory
Secure Communication Over Fading Channels
IEEE Transactions on Information Theory
On the Secrecy Capacity of Fading Channels
IEEE Transactions on Information Theory
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We consider a physical layer security based on the wire-tap channel for wireless communication systems in which there are one transmitter and multiple receivers/users who report their channel state information (CS/) to the transmitter. This scenario is practically useful since it models the forward link of cellular systems where the systems can take advantage of the multiuser diversity. We are curious about the role of the multiuser diversity in the secure communication under the wiretap channel framework. Although it is well known that fixed transmit power is not optimal when CSI is available to the transmitter, to get useful insights, we consider a fixed transmit power case. In return, we can have some of important performance measures such as outage probability, average secrecy rate, failure rate, and average wait time in closed forms. The analysis interestingly shows that the multiuser diversity becomes always disadvantageous for the secure communications. We substantiate our claims with the analytic results and numerical evaluations.