TY - GEN
T1 - MIMO Gaussian broadcast channels with confidential and common messages
AU - Liu, Ruoheng
AU - Liu, Tie
AU - Poor, H. Vincent
AU - Shamai, Shlomo
PY - 2010
Y1 - 2010
N2 - This paper considers the problem of secret communication over a two-receiver multiple-input multiple-output (MIMO) Gaussian broadcast channel. The transmitter has two independent, confidential messages and a common message. Each of the confidential messages is intended for one of the receivers but needs to be kept perfectly secret from the other, and the common message is intended for both receivers. It is shown that a natural scheme that combines secret dirty-paper coding with Gaussian superposition coding achieves the secrecy capacity region. To prove this result, a channel-enhancement approach and an extremal entropy inequality of Weingarten et al. are used.
AB - This paper considers the problem of secret communication over a two-receiver multiple-input multiple-output (MIMO) Gaussian broadcast channel. The transmitter has two independent, confidential messages and a common message. Each of the confidential messages is intended for one of the receivers but needs to be kept perfectly secret from the other, and the common message is intended for both receivers. It is shown that a natural scheme that combines secret dirty-paper coding with Gaussian superposition coding achieves the secrecy capacity region. To prove this result, a channel-enhancement approach and an extremal entropy inequality of Weingarten et al. are used.
UR - http://www.scopus.com/inward/record.url?scp=77955683763&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955683763&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2010.5513775
DO - 10.1109/ISIT.2010.5513775
M3 - Conference contribution
AN - SCOPUS:77955683763
SN - 9781424469604
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2578
EP - 2582
BT - 2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings
T2 - 2010 IEEE International Symposium on Information Theory, ISIT 2010
Y2 - 13 June 2010 through 18 June 2010
ER -