Apparatus and method for estimating location in a wireless communication system

    公开(公告)号:US10602311B2

    公开(公告)日:2020-03-24

    申请号:US16409299

    申请日:2019-05-10

    Abstract: Disclosed is a method for increasing location estimation accuracy of a communication device, including identifying a set including at least one sample among a plurality of samples of a probability distribution for estimated locations of the communication device, and determining a location of the communication device among the at least one sample based on a reliability of each of the at least one sample, by determining the reliability of each of the at least one sample in the set, when a difference between a first location of the communication device which is estimated based on a first scheme and a second location of the communication device which is estimated based on a second scheme is greater than or equal to a preset threshold value, and determining a sample of which a reliability is greatest among the at least one sample as the location of the communication device.

    Method and apparatus for canceling interference signal of UE in wireless communication system
    35.
    发明授权
    Method and apparatus for canceling interference signal of UE in wireless communication system 有权
    在无线通信系统中消除UE的干扰信号的方法和装置

    公开(公告)号:US09564955B2

    公开(公告)日:2017-02-07

    申请号:US14844820

    申请日:2015-09-03

    Abstract: Methods and apparatuses are provided for canceling interference at a User Equipment (UE) in a wireless communication system. A signal that includes a desired signal and an interference signal is received from at least one Base Station (BS). A random parameter is generated by projecting a vector of the received signal onto a set of projection vectors. A decision metric is determined using the random parameter. A Traffic to Pilot Ratio (TPR) that minimizes the decision metric with respect to both a transmission mode candidate group of the interference signal and a TPR candidate group of the interference signal is determined. The interference signal is canceled from the received signal using the TPR.

    Abstract translation: 提供了用于消除无线通信系统中的用户设备(UE)的干扰的方法和装置。 从至少一个基站(BS)接收包括所需信号和干扰信号的信号。 通过将接收信号的矢量投影到一组投影矢量上来生成随机参数。 使用随机参数确定决策度量。 确定最小化干扰信号的发送模式候选组和干扰信号的TPR候选组的判定度量的导频比(TPR)的业务量。 使用TPR从接收到的信号中消除干扰信号。

    Apparatus and method for processing reduced bandwidth envelope tracking and digital pre-distortion
    37.
    发明授权
    Apparatus and method for processing reduced bandwidth envelope tracking and digital pre-distortion 有权
    用于处理减少带宽包络跟踪和数字预失真的装置和方法

    公开(公告)号:US08649746B2

    公开(公告)日:2014-02-11

    申请号:US13624358

    申请日:2012-09-21

    CPC classification number: H04B1/0475 H04B1/0028

    Abstract: An apparatus and a method for processing reduced bandwidth Envelope Tracking (ET) and Digital Pre-Distortion (DPD) are provided. The apparatus includes a Crest Factor Reduction (CFR) unit, a resealing Digital Pre-Distortion (DPD) unit, an envelope converter, a Supply Modulator (SM), and a Power Amplifier (PA). The CFR unit suppresses an increase of a side lobe occurring when a Peak to Average Power Ratio (PAPR) decreases with respect to a signal generated in a baseband according to a standard and passes through a transmit (Tx) filter. The resealing DPD unit receives an original envelope amplitude and a reduced bandwidth envelope amplitude of an In-phase/Quadrature-phase (I/Q) signal output from the CFR unit to perform a pre-distortion process. The envelope converter converts an envelope signal to a reduced bandwidth envelope signal based on the I/Q signal output from the CFR unit.

    Abstract translation: 一种用于处理减少带宽的设备和方法提供了信封跟踪(ET)和数字预失真(DPD)。 该装置包括波峰因数降低(CFR)单元,重新密封的数字预失真(DPD)单元,包络转换器,电源调制器(SM)和功率放大器(PA)。 当相对于在基带中产生的信号的峰值对平均功率比(PAPR)降低时,CFR单元抑制旁瓣增加,并且通过发送(Tx)滤波器。 重新密封的DPD单元接收从CFR单元输出的同相/正交相(I / Q)信号的原始包络幅度和减小的带宽包络幅度,以执行预失真处理。 基于从CFR单元输出的I / Q信号,包络转换器将包络信号转换为减小带宽包络信号。

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