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- W2112967760 abstract "Wireless communication is particularly susceptible to eavesdropping due to its broadcast nature. Security and privacy systems have become critical for wireless providers and enterprise networks. This paper considers the problem of secret communication over the Gaussian broadcast channel, where a multiple-antenna transmitter wishes to send independent confidential messages to two users with information-theoretic secrecy. That is, each user would like to obtain its own confidential message in a reliable and safe manner. This communication model is referred to as the multiple-antenna Gaussian broadcast channel with confidential messages (MGBC-CM). Under this communication scenario, a secret dirty-paper coding scheme and the corresponding achievable secrecy rate region are first developed based on Gaussian codebooks. Next, a computable Sato-type outer bound on the secrecy capacity region is provided for the MGBC-CM. Furthermore, the Sato-type outer bound proves to be consistent with the boundary of the secret dirty-paper coding achievable rate region, and hence, the secrecy capacity region of the MGBC-CM is established. Finally, two numerical examples demonstrate that both users can achieve positive rates simultaneously under the information-theoretic secrecy requirement." @default.
- W2112967760 created "2016-06-24" @default.
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- W2112967760 date "2009-03-01" @default.
- W2112967760 modified "2023-10-17" @default.
- W2112967760 title "Secrecy Capacity Region of a Multiple-Antenna Gaussian Broadcast Channel With Confidential Messages" @default.
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- W2112967760 doi "https://doi.org/10.1109/tit.2008.2011448" @default.
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