Massive MIMO Uplink Synchronization Scheme Based on Selected-Beam Combining

In wireless communication systems that potentially operate in interference, acquisition and temporal alignment of a transmitted signal by a receiver can be the most fragile component of the link. In this paper, we study multicarrier multiuser multiple-input multiple-output (MU-MIMO) system, in which the base station employs an asymptotically large number of antennas. For Massive MIMO uplink synchronization transmission, we work out a selected-beam combining method to enhance performance in beam domain channel. Simulations demonstrate the performance boosts by taking advantage of the selected-beam combing.