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The authors introduce an Opportunistic Interference Mitigation (OIM) protocol for cellular networks, where a user scheduling strategy is utilized in uplink K-cell environments with time-invariant channel coefficients and Base Stations (BSs) having M receive antennas. In the OIM scheme, each BS opportunistically selects a set of users who generate the minimum interference to the other BSs. They consider two OIM protocols according to the number S of simultaneously transmitting users per cell. Then, their performance is analyzed in terms of Degrees-of-Freedom (DoFs).
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