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    SYSTEMS AND METHODS FOR WIRELESS COMMUNICATION WITH PER-BEAM SIGNAL SYNCHRONIZATION
    2.
    发明申请
    SYSTEMS AND METHODS FOR WIRELESS COMMUNICATION WITH PER-BEAM SIGNAL SYNCHRONIZATION 审中-公开

    公开(公告)号：US20190013983A1

    公开(公告)日：2019-01-10

    申请号：US15744909

    申请日：2016-10-31

    申请人： SOUTHEAST UNIVERSITY

    发明人： Xiqi GAO ,  Li YOU ,  Wenjin WANG

    IPC分类号： H04L27/26 ,  H04L5/00 ,  H04B7/01 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/0413

    CPC分类号： H04L27/2655 ,  H04B7/01 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0617 ,  H04L5/0048 ,  H04W56/005

    摘要： Signal transmitting/receiving electronic devices or terminals in the present disclosure are configured to conduct per-beam signal synchronization in massive MIMO communication with a signal receiving/transmitting device or base station. During the massive MIMO communication, the devices or terminals are configured to transmit/receive signals via a set of beams to or from the signal receiving/transmitting device or base station. For beam domain signal of each individual beam of the plurality beams, the devices or terminals are configured to determine target time adjustments based on time shifts of the beam domain signals induced by multipath effect and target frequency adjustments based on frequency offsets of the beam domain signals induced by the Doppler effect; adjust time independent variables of the beam domain signals by the time adjustments; and adjust frequency independent variables of the beam domain signals by the frequency adjustments. Further, per-beam synchronized BDMA massive MIMO transmission method is disclosed, which provides a solution to efficient and reliable wireless communications with high mobility and/or high carrier frequency.

    RF receive diplexer
    8.
    发明授权
    RF receive diplexer 有权

    公开(公告)号：US09929752B2

    公开(公告)日：2018-03-27

    申请号：US14681725

    申请日：2015-04-08

    申请人： RF Micro Devices, Inc.

    发明人： Nadim Khlat ,  Marcus Granger-Jones

    IPC分类号： H04B1/00 ,  H04B7/01 ,  H04B7/08 ,  H04B1/18

    CPC分类号： H04B1/0057 ,  H04B1/18 ,  H04B7/01 ,  H04B7/0837

    摘要： A first RF receive diplexer, which includes a first hybrid RF coupler, a second hybrid RF coupler, and RF filter circuitry, is disclosed. The first hybrid RF coupler has a first main port, a first pair of quadrature ports, and a first isolation port, which is coupled to an RF antenna. The second hybrid RF coupler has a second main port and a second pair of quadrature ports. The RF filter circuitry is coupled between the first pair of quadrature ports and the second pair of quadrature ports. The first RF receive diplexer receives a first adjunct RF antenna receive signal via the first isolation port to provide a first adjunct RF receive signal via the second main port. The first RF receive diplexer receives a first RF transmit signal via the first main port to provide a first RF antenna transmit signal via the first isolation port.

    Reconfigurable RF receive diplexer
    9.
    发明授权
    Reconfigurable RF receive diplexer 有权

    公开(公告)号：US09768838B2

    公开(公告)日：2017-09-19

    申请号：US14820006

    申请日：2015-08-06

    申请人： RF Micro Devices, Inc.

    发明人： Nadim Khlat ,  Marcus Granger-Jones

    IPC分类号： H04B1/00 ,  H04B7/08 ,  H04B7/01 ,  H04B1/18 ,  H04B1/58

    CPC分类号： H04B7/01 ,  H04B1/0057 ,  H04B1/18 ,  H04B1/58 ,  H04B7/0837

    摘要： A reconfigurable RF receive diplexer, which includes a first hybrid RF coupler, a second hybrid RF coupler, and reconfigurable RF filter circuitry, is disclosed. The reconfigurable RF receive diplexer receives a first adjunct RF antenna receive signal via a first isolation port to provide a first adjunct RF receive signal via a second main port. The reconfigurable RF receive diplexer further receives a first RF transmit signal via a first main port to provide a first RF antenna transmit signal via the first isolation port. The reconfigurable RF receive diplexer operates in each of a group of operating modes, such that during a first operating mode, a carrier frequency of the first adjunct RF antenna receive signal is within a first RF communications band; and during a second operating mode, a carrier frequency of the first adjunct RF antenna receive signal is within a second RF communications band.