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New Results on Multiple-Input Multiple-Output Broadcast Channels With Confidential Messages

Author(s): Liu, Ruoheng; Liu, Tie; Poor, H Vincent; Shamai, Shlomo

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Abstract: This paper presents two new results on multiple-input multiple-output (MIMO) Gaussian broadcast channels with confidential messages. First, the MIMO Gaussian wiretap channel is revisited. A matrix characterization of the capacity-equivocation region is provided, which extends the previous result on the secrecy capacity to the more general imperfect secrecy setting. Next, the MIMO Gaussian broadcast channel with two receivers and three independent messages: a common message intended for both receivers, and two confidential messages each intended for one of the receivers but needing to be kept asymptotically perfectly secret from the other, is considered. A precise characterization of the capacity region is provided, generalizing the previous results which considered only two out of three possible messages.
Publication Date: Mar-2013
Citation: Liu, Ruoheng, Tie Liu, H. Vincent Poor, and Shlomo Shamai. "New results on multiple-input multiple-output broadcast channels with confidential messages." IEEE Transactions on Information Theory 59, no. 3 (2013): 1346-1359. doi:10.1109/TIT.2012.2229460
DOI: 10.1109/TIT.2012.2229460
ISSN: 0018-9448
EISSN: 1557-9654
Pages: 1346 - 1359
Type of Material: Journal Article
Journal/Proceeding Title: IEEE Transactions on Information Theory
Version: Author's manuscript

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