Data Sharing Coordination and Blind Interference Alignment for Cellular Networks
The authors consider coordination in a multi-user multiple input single output cellular system. In contrast with existing base station cooperation methods that rely on sharing CSI with or without user data to manage interference, they propose to share user data only. They consider a system where Blind Interference Alignment (BIA) is applied to serve multiple users in each cell. They apply interference coordination through data sharing to mitigate other-cell interference at the cell-edge users. While BIA mitigates intra-cell interference in MU-MISO systems, it does not address the problem of inter-cell interference. They apply interference coordination through data sharing to mitigate inter-cell interference at the cell-edge users.