Journal
IEEE TRANSACTIONS ON INFORMATION THEORY
Volume 57, Issue 5, Pages 2976-2993Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIT.2011.2120130
Keywords
Common message; compound channels; deterministic approximation; information theoretic security; interference alignment; multi-level coding; private broadcast channels; wiretap channel
Funding
- Natural Science and Engineering Research Council (NSERC)
Ask authors/readers for more resources
We study a wiretap channel model where the sender has transmit antennas and there are two groups consisting of J(1) and J(2) receivers respectively. Each receiver has a single antenna. We consider two scenarios. First we consider the compound wiretap model-group 1 constitutes the set of legitimate receivers, all interested in a common message, whereas group 2 is the set of eavesdroppers. We establish new lower and upper bounds on the secure degrees of freedom (d.o.f.). Our lower bound is based on the recently proposed real interference alignment scheme. The upper bound provides the first known example which illustrates that the pairwise upper bound used in earlier works is not tight. The second scenario we study is the compound private broadcast channel. Each group is interested in a message that must be protected from the other group. Upper and lower bounds on the d.o.f. are developed by extending the results on the compound wiretap channel.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available