TY - GEN
T1 - On the compound MIMO broadcast channels with confidential messages
AU - Kobayashi, Mari
AU - Liang, Yingbin
AU - Shamai, Shlomo
AU - Debbah, Merouane
PY - 2009
Y1 - 2009
N2 - We study the compound multi-input multi-output (MIMO) broadcast channel with confidential messages (BCC), where one transmitter sends a common message to two receivers and two confidential messages respectively to each receiver. The channel state may take one of a finite set of states, and the transmitter knows the state set but does not know the realization of the state. We study achievable rates with perfect secrecy in the high SNR regime by characterizing an achievable secrecy degree of freedom (s.d.o.f.) region for two models, the Gaussian MIMO-BCC and the ergodic fading multi-input single-output (MISO)-BCC without a common message. We show that by exploiting an additional temporal dimension due to state variation in the ergodic fading model, the achievable s.d.o.f, region can be significantly improved compared to the Gaussian model with a constant state, although at the price of a larger delay.
AB - We study the compound multi-input multi-output (MIMO) broadcast channel with confidential messages (BCC), where one transmitter sends a common message to two receivers and two confidential messages respectively to each receiver. The channel state may take one of a finite set of states, and the transmitter knows the state set but does not know the realization of the state. We study achievable rates with perfect secrecy in the high SNR regime by characterizing an achievable secrecy degree of freedom (s.d.o.f.) region for two models, the Gaussian MIMO-BCC and the ergodic fading multi-input single-output (MISO)-BCC without a common message. We show that by exploiting an additional temporal dimension due to state variation in the ergodic fading model, the achievable s.d.o.f, region can be significantly improved compared to the Gaussian model with a constant state, although at the price of a larger delay.
UR - http://www.scopus.com/inward/record.url?scp=70449513409&partnerID=8YFLogxK
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U2 - 10.1109/ISIT.2009.5205953
DO - 10.1109/ISIT.2009.5205953
M3 - Conference contribution
AN - SCOPUS:70449513409
SN - 9781424443130
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 1283
EP - 1287
BT - 2009 IEEE International Symposium on Information Theory, ISIT 2009
T2 - 2009 IEEE International Symposium on Information Theory, ISIT 2009
Y2 - 28 June 2009 through 3 July 2009
ER -