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

作者: Tiangao Gou , Syed Ali Jafar , Chenwei Wang , Sang-Woon Jeon , Sae-Young Chung

DOI: 10.1109/TIT.2012.2191388

关键词: TopologyCommunication channelTelecommunicationsPhysicsOver the AirSpread spectrumHop (networking)Integrated circuitWireless networkInterference alignmentBound (value)

摘要: We show that the 2 × interference network, i.e., multihop network formed by concatenation of two two-user channels achieves min-cut outer bound value DoF, for almost all values channel coefficients, both time-varying or fixed-channel coefficients. The key to this result is a new idea, called aligned neutralization, provides way align terms over each hop in manner allows them be canceled air at last hop.

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