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    RECEIVER WITH COHERENT MATCHED FILTER
    1.
    发明公开
    RECEIVER WITH COHERENT MATCHED FILTER 审中-公开

    公开(公告)号：US20240364495A1

    公开(公告)日：2024-10-31

    申请号：US18601000

    申请日：2024-03-11

    申请人： Aireon LLC

    发明人： Timothy DYSON

    IPC分类号： H04L7/04 ,  G08G5/00 ,  H04B1/7093 ,  H04L1/00 ,  H04L27/00

    CPC分类号： H04L7/042 ,  G08G5/00 ,  H04L1/0054 ,  H04L7/048 ,  H04L27/0014 ,  H04B1/7093

    摘要： In one implementation, a receiver has a module to calculate the cross-correlation between a portion of a digital representation of a received signal and a reference signal. The receiver also has a module to generate an estimate of a portion of a message potentially included in the digital representation of the received signal and a screening module to determine the likelihood that the received signal includes a message. For a received signal that is determined likely to include a message, the receiver includes a carrier refinement module to shift the frequency of carrier pulses in the digital representation of the received signal toward a desired frequency and to align the phase of carrier pulses in the digital representation of the received signal with a desired phase and a coherent matched filter to recover the message from the digital representation of the received signal.

    I/Q DOMAIN MODULATION METHOD, DUAL DOMAIN MODULATION METHOD, AND MULTIPLE ACCESS COMMUNICATION METHOD
    7.
    发明公开
    I/Q DOMAIN MODULATION METHOD, DUAL DOMAIN MODULATION METHOD, AND MULTIPLE ACCESS COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20230421281A1

    公开(公告)日：2023-12-28

    申请号：US18033379

    申请日：2021-04-29

    申请人： UNIVERSITY OF ELECTRONIC AND TECHNOLOGY OF CHINA

    发明人： Guangrong YUE ,  Daizhong YU ,  Lin YANG

    IPC分类号： H04J3/06 ,  H04W56/00 ,  H04L27/00

    CPC分类号： H04J3/0682 ,  H04W56/004 ,  H04L27/0014 ,  H04J3/0638 ,  H04L2027/0018 ,  H04L2027/0024

    摘要： A spatial position-dependent I/Q domain modulation method, dual domain modulation method and multiple access communication method are provided. The methods eliminate the dependence of physical layer secure communication on channel state information, and realize the function that a receiver at an expected position can communicate normally, while an eavesdropper at other positions cannot receive a signal or can only receive a wrong signal. The security capability of a wireless communication system is improved from the spatial dimension. The multiple access communication method can realize the distinguishing of multiple users according to precise spatial position points. Even if a plurality of users are located in the same sector in an angular domain, as long as the spatial positions of these users are different, the method can be used to perform multiple access communication, thereby further improving the spatial multiplexing rate of the system and increasing the system capacity.

    AMPLITUDE OPTIMIZED REFLECTION CANCELLER IN PARALLEL CHANNEL EQUALIZERS
    8.
    发明公开
    AMPLITUDE OPTIMIZED REFLECTION CANCELLER IN PARALLEL CHANNEL EQUALIZERS 审中-公开

    公开(公告)号：US20230353429A1

    公开(公告)日：2023-11-02

    申请号：US18349635

    申请日：2023-07-10

    申请人： HUAWEI TECHNOLOGIES CO., LTD.

    发明人： Ehud NIR ,  Yanggao QIU

    IPC分类号： H04L25/03 ,  H04L27/00

    CPC分类号： H04L25/03343 ,  H04L27/0014 ,  H04L2027/0038

    摘要： Methods and systems for equalizing signals are disclosed. In an example, a method for equalizing a digital signal at an equalizer, comprises: receiving, at the equalizer, a plurality of samples of the signal in a plurality of unit intervals (UIs) of a channel response of the digital signal, the plurality of samples comprising a first plurality of samples of a primary response and a second plurality of samples of one or more reflection responses; equalizing, by the equalizer, the first plurality of samples using a first set bitwidth; equalizing the second plurality of samples using one or more further set bitwidths, wherein the first set bitwidth is greater than each of the one or more further set bitwidths; and generating, by the equalizer, an equalized digital signal.