Minghuan Tang

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In this paper, we propose a novel framework called coordinated double-beam tilting to improve the throughput of multiple-input multiple-output (MIMO) system in a single cell via determining the tilting angles of two beams adaptively in a coordinated fashion. In this framework, two antenna beams adjust their tilting angles jointly based on the location of(More)
Beamforming (BF) is an effective method to restrain interference in cellular communication systems. Steering beam direction in 3D space can improve useful signal power that user equipments (UEs) received and eliminate interference effectively. In this paper, we focus on how to choose 3D-BF angles of beam and propose a cooperative angle selecting scheme(More)
Base station (BS) can transmit directional beams towards specific users by downlink beamforming. However, the inter-beam interference can affect the achievable capacity severely. In this paper, we propose a user grouping method for downlink beamforming in massive multiple-input multiple-output (MIMO) system. Our method aims to group users according to the(More)
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