TY - GEN
T1 - Providing secrecy when the eavesdropper channel is arbitrarily varying
T2 - 48th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2010
AU - He, Xiang
AU - Yener, Aylin
PY - 2010
Y1 - 2010
N2 - Despite recent attempts with compound channel settings, guaranteeing information theoretically secure communication rates with no knowledge of the eavesdropper channel states has been elusive to date. In this work, we address this problem, and consider the worst case scenario where the eavesdropper's channel is arbitrarily varying, and is known only by itself. We show that it is possible to provide non-zero secure communication rates with the aid of multiple antennas. Under the mild assumption that the number of antennas at the eavesdropper is limited, we provide the strong secrecy rate for the MIMO wiretap channel. Specifically, it is proved that there exists a universal coding scheme that secures the confidential message against any sequence of channel states experienced by the eavesdropper. We show that the result is tight in terms of secure degrees of freedom.
AB - Despite recent attempts with compound channel settings, guaranteeing information theoretically secure communication rates with no knowledge of the eavesdropper channel states has been elusive to date. In this work, we address this problem, and consider the worst case scenario where the eavesdropper's channel is arbitrarily varying, and is known only by itself. We show that it is possible to provide non-zero secure communication rates with the aid of multiple antennas. Under the mild assumption that the number of antennas at the eavesdropper is limited, we provide the strong secrecy rate for the MIMO wiretap channel. Specifically, it is proved that there exists a universal coding scheme that secures the confidential message against any sequence of channel states experienced by the eavesdropper. We show that the result is tight in terms of secure degrees of freedom.
UR - http://www.scopus.com/inward/record.url?scp=79952383608&partnerID=8YFLogxK
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U2 - 10.1109/ALLERTON.2010.5707054
DO - 10.1109/ALLERTON.2010.5707054
M3 - Conference contribution
AN - SCOPUS:79952383608
SN - 9781424482146
T3 - 2010 48th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2010
SP - 1228
EP - 1235
BT - 2010 48th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2010
Y2 - 29 September 2010 through 1 October 2010
ER -