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The interference channel with common information (IC-CI) is studied. In an IC-CI, each transmitter has an individual message for its paired receiver, and additionally, both transmitters collaboratively must deliver a common message to both the receivers. For the symmetric Gaussian IC-CI, the capacity region is characterized to within a gap of 3 bits independently of the values of the channel parameters...
The generalized degrees of freedom region (GDoF) of the multiple-input multiple-output (MIMO) interference channel (IC) is studied under the “no CSIT” assumption under which there is perfect channel state information (CSI) at the receivers and no CSI at the transmitters (CSIT). In the very weak interference regime, where the ratio of channel gains (in dB) of the interfering and direct links, α, is...
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