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[ ] 30 Sep 2018 beam Management for Millimeter Wave BeamspaceMU-MIMO SystemsQing Xue and Xuming FangKey Lab of Information Coding & TransmissionSouthwest Jiaotong University, Chengdu 610031, ChinaEmail: XiaoCommunication Theory DepartmentRoyal Institute of Technology, Stockholm 100 44, SwedenEmail: Millimeter wave (mmWave) communication has at-tracted increasing attention as a promising technology for5 Gnetworks. One of the key architectural features of mmWave isthe use of massive antenna arrays at both the transmitter andthereceiver sides. Therefore, by employing directional beamforming(BF), both mmWave base stations (MBSs) and mmWave users(MUEs) are capable of supporting multi- beam simultaneoustransmissions. However, most researches have only considered asingle beam , which means that they do not make full potentialofmmWave. In this context, in order to improve the performanceofshort-range indoor mmWave networks with multiple reflections,we investigate the challenges and potential solutions of downlinkmulti-user multi- beam transmission, which can be described asa high-dimensional ( , beamspace ) multi-user multiple-inputmultiple-output (MU-MIMO) technique, including multi-user BFtraining, simultaneous users grouping, and multi-user multi- beam power allocation.
arXiv:1710.03640v1 [cs.NI] 10 Oct 2017 Beam Management for Millimeter Wave Beamspace MU-MIMO Systems Qing Xue and Xuming Fang Key Lab of Information Coding & Transmission
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