METHOD FOR MEASURING DOWNLINK CHANNEL QUALITY, TRANSMIT END, RECEIVE END, AND SYSTEM

    公开(公告)号:US20190028171A1

    公开(公告)日:2019-01-24

    申请号:US16139238

    申请日:2018-09-24

    Abstract: A method includes: a transmit end transmits at least two mixed pilot signals to a receive end separately by using at least two physical antennas. The at least two mixed pilot signals are separately obtained after preset pilot signals corresponding to logical antennas in the at least two logical antennas are weighted by using a precoding weight matrix. The transmit sends a first codebook subset restriction instruction to the receive end. The first codebook subset restriction instruction carries a rank indication RANK and at least one precoding matrix index PMI. The transmit end receives a channel quality feedback message that is fed back by the receive end according to downlink channel quality of an equivalent channel of a specified antenna. Accordingly, a suitable serving antenna is selected for a receive end, thereby improving signal quality.

    COMMUNICATION METHOD, BASE STATION, AND USER EQUIPMENT
    2.
    发明申请
    COMMUNICATION METHOD, BASE STATION, AND USER EQUIPMENT 有权
    通信方法,基站和用户设备

    公开(公告)号:US20160211899A1

    公开(公告)日:2016-07-21

    申请号:US15081038

    申请日:2016-03-25

    Abstract: A communication method, a base station, and user equipment are provided. The method includes: forming m beams by using a manner of antenna weighting, where m is a positive integer greater than 1; determining an uplink receive power of each beam according to an uplink sounding signal of UE; selecting n beams from the m beams according to the uplink receive power of each beam, where n is a positive integer, and n

    Abstract translation: 提供通信方法,基站和用户设备。 该方法包括:通过使用天线加权的方式形成m个波束,其中m是大于1的正整数; 根据UE的上行探测信号确定每个波束的上行接收功率; 根据每个波束的上行接收功率从m个波束中选择n个波束,其中n是正整数,n

    Method and a user terminal for processing digital predistortion
    3.
    发明申请
    Method and a user terminal for processing digital predistortion 有权
    用于处理数字预失真的方法和用户终端

    公开(公告)号:US20130287140A1

    公开(公告)日:2013-10-31

    申请号:US13775521

    申请日:2013-02-25

    CPC classification number: H04L27/367 H04L25/03343

    Abstract: Embodiments of the present invention provide a digital predistortion processing method and a user terminal, which relate to the field of communications, and can simplify the structure of a digital predistortion apparatus and reduce the cost. The method includes: setting a control command; and tuning, when the control command is selecting a data collection mode as the working mode of a receive channel, the frequency of a local oscillator and the central frequency of a band-pass filter in the receive channel to the transmitting frequency of the user terminal, so that the user terminal performs predistortion factor update. The embodiments of the present invention are applied to the user terminal for digital predistortion processing.

    Abstract translation: 本发明的实施例提供了与通信领域有关的数字预失真处理方法和用户终端,并且可以简化数字预失真装置的结构并降低成本。 该方法包括:设置控制命令; 并且当控制命令正在选择数据收集模式作为接收信道的工作模式时,本地振荡器的频率和接收信道中的带通滤波器的中心频率与用户终端的发送频率的调谐 ,使得用户终端执行预失真因子更新。 本发明的实施例应用于用于数字预失真处理的用户终端。

    METHOD, DEVICE, AND SYSTEM FOR TRANSMITTING MU-MIMO PILOT AND DATA
    5.
    发明申请
    METHOD, DEVICE, AND SYSTEM FOR TRANSMITTING MU-MIMO PILOT AND DATA 有权
    用于发送MU-MIMO引导和数据的方法,设备和系统

    公开(公告)号:US20150171942A1

    公开(公告)日:2015-06-18

    申请号:US14585765

    申请日:2014-12-30

    CPC classification number: H04B7/0452 H04B7/0413 H04B7/0697 H04L5/0048

    Abstract: Disclosed are a method, device and system for transmitting a Multi-user Multiple-Input-Multiple-Output (MU-MIMO) pilot and data. The method includes: when at least two terminals transmit a MU-MIMO pilot and data on one same time/frequency resource, constructing a k-stream SU-MIMO pilot and data; based on the configuration mode of the k-stream SU-MIMO pilot, modifying demodulation pilot port parameters of the at least two terminals; and based on the transmission mode of the k-stream SU-MIMO pilot and data, transmitting the k-stream SU-MIMO pilot and data to the at least two terminals, respectively. Further disclosed are a device and system for transmitting a MU-MIMO pilot and data

    Abstract translation: 公开了用于发送多用户多输入多输出(MU-MIMO)导频和数据的方法,装置和系统。 该方法包括:当至少两个终端在同一时间/频率资源上发送MU-MIMO导频和数据时,构建k流SU-MIMO导频和数据; 基于所述k流SU-MIMO导频的配置模式,修改所述至少两个终端的解调导频端口参数; 并且基于k流SU-MIMO导频和数据的传输模式,分别向至少两个终端发送k流SU-MIMO导频和数据。 进一步公开的是用于发送MU-MIMO导频和数据的装置和系统

    SENSOR CALIBRATION METHOD AND APPARATUS

    公开(公告)号:US20250027797A1

    公开(公告)日:2025-01-23

    申请号:US18905929

    申请日:2024-10-03

    Abstract: This application provides a sensor calibration method and an apparatus, and relates to the field of communication technologies, to improve sensor calibration efficiency. In the calibration method, a first data frame group is received from a first sensor; a second data frame group is received from a second sensor; whether the first data frame group and the second data frame group correspond to a same target group is determined; and if the first data frame group and the second data frame group correspond to the same target group, the second sensor may be calibrated based on the first data frame group and the second data frame group. In this way, a manner of automatically calibrating a sensor is provided, and manual intervention is not required. This improves sensor calibration efficiency.

    SIGNAL PROCESSING METHOD AND APPARATUS
    7.
    发明公开

    公开(公告)号:US20230194660A1

    公开(公告)日:2023-06-22

    申请号:US18171036

    申请日:2023-02-17

    CPC classification number: G01S7/40 G01S13/89

    Abstract: This application discloses signal processing methods and apparatuses, in the field of radar technologies, and may be applied to scenarios such as intelligent transportation (for example, intelligent transportation, assisted driving, or autonomous driving), a smart home, and a robot. In an example method, a first range time-domain signal of a first subband and a second range time-domain signal of a second subband adjacent to the first subband are obtained. The first range time-domain signal and the second range time-domain signal are synthesized and superposed to obtain a third range time-domain signal. A first peak point and a second peak point of the third range time-domain signal are obtained. A constant phase error θerr between the first range time-domain signal and the second range time-domain signal is obtained based on the first peak point and the second peak point.

    POWER-ON/OFF DRIVE CIRCUIT AND METHOD FOR CONTROLLING POWER-ON/OFF DRIVE CIRCUIT

    公开(公告)号:US20180301306A1

    公开(公告)日:2018-10-18

    申请号:US16010509

    申请日:2018-06-17

    CPC classification number: H01H47/32 H01H9/542 H02M1/32 H02M1/36 H03K17/08122

    Abstract: The present invention discloses a power-on/off drive circuit and a method for controlling the power-on/off drive circuit, and belongs to the field of electronic technologies. The power-on/off drive circuit includes a load, a switch circuit, a relay, and a single-source drive circuit; one end of a coil in the relay and a first input end of the single-source drive circuit are separately connected to a positive electrode of a second external power supply, and the other end of the coil in the relay is connected to a second input end of the single-source drive circuit; and a first output end of the single-source drive circuit is connected to a second input end of the switch circuit, a second output end of the single-source drive circuit is connected to the output end of the switch circuit, and a third output end of the single-source drive circuit is connected to a negative electrode of the second external power supply. In the present invention, a volume of a power-on/off drive circuit is reduced.

    METHOD AND APPARATUS FOR OBTAINING DOWNLINK CHANNEL INFORMATION AND NETWORK SIDE DEVICE

    公开(公告)号:US20170331661A1

    公开(公告)日:2017-11-16

    申请号:US15662964

    申请日:2017-07-28

    Abstract: This application provides a method for obtaining downlink channel information. The method includes: performing preceding weighting on M CSI-RSs of each of N sub-cycles, where each sub-cycle is a quantity of measurement pilot subframes for bearing and transmitting the M CSI-RSs; sending the M weighted CSI-RSs to UE; receiving M PMIs and M CQIs that are sent by the UE and that correspond to the M CSI-RSs, where the M PMIs and the M CQIs are obtained by the UE by separately measuring the M weighted CSI-RSs based on a set a rank 1 preceding codebooks corresponding to the predetermined antenna quantity; obtaining M signal-to-noise ratios of a downlink channel of the UE according to the M CQIs, obtaining M equivalent codebooks according to the M PMIs and weights of the preceding weighting; and obtaining a covariance matrix according to the M signal-to-noise ratios and the M equivalent codebooks.

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