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On the Optimality of "Half the Cake" for K-User Rank-Deficient Mk x Mk Interference Channel | IEEE Conference Publication | IEEE Xplore

On the Optimality of "Half the Cake" for K-User Rank-Deficient Mk x Mk Interference Channel


Abstract:

By introducing a novel outer bound, we find a sufficient condition for optimality of \sum_{k=1}^K M_k/2 degrees of freedom (half the cake per user) for a K-user multi...Show More

Abstract:

By introducing a novel outer bound, we find a sufficient condition for optimality of \sum_{k=1}^K M_k/2 degrees of freedom (half the cake per user) for a K-user multiple-input- multiple-output (MIMO) interference channel (IC) where the cross-channels have arbitrary rank constraints, and the k^{th} transmitter and receiver are equipped with M_k antennas each. The result consolidates and significantly generalizes results from prior studies by Krishnamurthy et al., of rank-deficient interference channels where all users have M antennas; and by Tang et al., of full rank interference channels where the k^{th} user pair has M_k antennas.
Date of Conference: 06-10 December 2015
Date Added to IEEE Xplore: 25 February 2016
ISBN Information:
Conference Location: San Diego, CA, USA

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