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Aligned Interference Neutralization and the Degrees of Freedom of the 2-2-2 Interference Channel | IEEE Journals & Magazine | IEEE Xplore

Aligned Interference Neutralization and the Degrees of Freedom of the 2\,\times \,2\,\times \,2 Interference Channel


Abstract:

We show that the 2 × 2 × 2 interference network, i.e., the multihop interference network formed by concatenation of two two-user interference channels achieves the min-cu...Show More

Abstract:

We show that the 2 × 2 × 2 interference network, i.e., the multihop interference network formed by concatenation of two two-user interference channels achieves the min-cut outer bound value of 2 DoF, for almost all values of channel coefficients, for both time-varying or fixed-channel coefficients. The key to this result is a new idea, called aligned interference neutralization, that provides a way to align interference terms over each hop in a manner that allows them to be canceled over the air at the last hop.
Published in: IEEE Transactions on Information Theory ( Volume: 58, Issue: 7, July 2012)
Page(s): 4381 - 4395
Date of Publication: 20 March 2012

ISSN Information:


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