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On the sum secure degrees of freedom of two-unicast layered wireless networks

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2 Author(s)
Jianwei Xie ; Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA ; Ulukus, Sennur

In this paper, we study the sum secure degrees of freedom (d.o.f.) of two-unicast layered wireless networks. Without a secrecy constraint, the sum d.o.f. of this class of networks was studied by [1] and shown to take only one of three possible values: 1, 3/2 and 2, for all network configurations. We consider the setting where the message of each source-destination pair must be kept information-theoretically secure from the unintended receiver. We show that the sum secure d.o.f. can take 0, 1, 3/2, 2 and at most countably many other positive values, which we enumerate.

Published in:

Information Theory Proceedings (ISIT), 2012 IEEE International Symposium on

Date of Conference:

1-6 July 2012

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