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To meet the ever-increasing data traffic demand, heterogeneous cellular networks (HCNs) are to be deployed for wireless communication and coordinated multipoint (CoMP) is thought to be desirable to further improve the performance of HCNs. This paper considers the problem of base station (BS) cooperation in the downlink of HCNs. A novel and flexible cross-tier cooperative scheme is proposed in the...
In this letter, we study the feasibility of interference neutralization (IN) for a two-user interference channel (IC) with a multi-input-multi-output (MIMO) instantaneous relay. With this channel model, Lee et al. show that instantaneous relaying is a promising approach to neutralize interference and increase the degrees of freedom (DoF). However, only the scenario where each node has the same number...
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