Outage-Constrained Beamforming for Two-Tier Massive MIMO Downlink with Pilot Reuse

<div>One typical architecture of a two-tier network. A macro cell tier is overlaid with a secondary tier of small cells. The interfering signals are marked by dotted lines and the intended signals are marked by solid lines.</div>

International Journal of Antennas and Propagation

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Figure 1

Figure 1: Outage-Constrained Beamforming for Two-Tier Massive MIMO Downlink with Pilot Reuse 