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    BEAMFORMING IN A MU-MIMO WIRELESS COMMUNICATION SYSTEM WITH RELAYS
    5.
    发明申请
    BEAMFORMING IN A MU-MIMO WIRELESS COMMUNICATION SYSTEM WITH RELAYS 审中-公开

    公开(公告)号：US20180234157A1

    公开(公告)日：2018-08-16

    申请号：US15881786

    申请日：2018-01-28

    申请人： Ping Liang ,  Dengkui Zhu ,  Boyu Li ,  Yiming Ma

    发明人： Ping Liang ,  Dengkui Zhu ,  Boyu Li ,  Yiming Ma

    IPC分类号： H04B7/06 ,  H04B17/336

    摘要： This invention presents methods for MU-MIMO wireless communication systems comprising a BS with plural of antennas, either closely located or distributed; A plural of AFRs deployed over a coverage area, each AFR has N_BF≥1 BF antennas with a beam pattern facing the MU-BFer and N_UF≥1 UF antennas with a beam pattern facing UEs or downstream AFR(s); A channel estimation module for estimating the Total Channels between a plural of UEs and the BS with the AFRs in place; and, A MU-BFer that uses the estimates of the Total Channels to perform beamforming computations for transmitting and/or receiving multiple spatially multiplexed streams of signals to or from a plural of UEs using the same frequency resource.

    POWER ALLOCATION AND PRECODING MATRIX COMPUTATION METHOD IN A WIRELESS COMMUNICATION SYSTEM
    8.
    发明申请
    POWER ALLOCATION AND PRECODING MATRIX COMPUTATION METHOD IN A WIRELESS COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20180139703A1

    公开(公告)日：2018-05-17

    申请号：US15576709

    申请日：2016-06-28

    申请人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    发明人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    IPC分类号： H04W52/24 ,  H04W72/04 ,  H04B7/0452 ,  H04W52/34

    摘要： This invention presents methods for power allocation for each data stream on each transmitting antennas in MU-MIMO wireless communication systems comprising the BS computing the temporary beamforming matrix, constructing special matrices and vectors with the maximum transmitting power on each antenna, the allocated power to each data stream, the channel quality of each data stream, and the amplitude of each element of the temporary beamforming matrix, calculating the power allocated to each data stream on each antenna with the calculated special matrices and vectors, and adjusting each element of the temporary beamforming matrix to obtain the final beamforming matrix.

    HYBRID BEAMFORMING METHOD FOR WIRELESS MULTI-ANTENNA AND FREQUENCY-DIVISION DUPLEX SYSTEMS
    9.
    发明申请
    HYBRID BEAMFORMING METHOD FOR WIRELESS MULTI-ANTENNA AND FREQUENCY-DIVISION DUPLEX SYSTEMS 有权

    公开(公告)号：US20220060232A1

    公开(公告)日：2022-02-24

    申请号：US17453833

    申请日：2021-11-05

    申请人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    发明人： Dengkui Zhu ,  Boyu Li ,  Ping Liang

    IPC分类号： H04B7/06 ,  H04W16/28 ,  H04B7/0452 ,  H04W88/10

    摘要： This invention presents a method and systems for beamforming in wireless communication comprising a base station with a plural of antennas and radio frequency transmitting and receiving chains, a plural of base band transmitting paths and base band receiving paths, and a processor that constructs a subspace for each user equipment using the principal angle information contained in partial channel state information obtained on channels associated with a part of the BS antennas, derives an analog beamforming matrix and/or an analog combining matrix from the subspaces of all the user equipment selected for communication with the base station to achieve analog beamforming, and further performs beamforming at the base band.