Abstract
This paper proposes a blind interference alignment (BIA) scheme in two-cell Z interference multiple-input multiple-output channel where the cell edge user equipment (UE) of the first cell is interfered by the base station of the second cell during downlink transmissions, while the UE of the second cell is free from inter-cell interference. By employing the reconfigurable antennas at receivers, the transmit strategy of the proposed scheme is designed. The achievable degree of freedom (DoF), the achievable rates, and the bit error rate performance of the proposed BIA scheme are analyzed. Simulation results show that the achievable DoF and the throughput of the proposed scheme are improved compared with conventional interference control scheme. Furthermore, in the proposed BIA scheme, all UEs can achieve a good diversity gain to combat fading.
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