Apparatus and method for automatic gain control in a broadband wireless access communication system
    12.
    发明授权
    Apparatus and method for automatic gain control in a broadband wireless access communication system 有权
    宽带无线接入通信系统中自动增益控制的装置和方法

    公开(公告)号:US07792204B2

    公开(公告)日:2010-09-07

    申请号:US11882596

    申请日:2007-08-02

    CPC classification number: H04L27/2647 H03G3/3052 H03G3/3068 H04B7/0842

    Abstract: An AGC apparatus and method in a BWA communication system are provided, in which a MAP interpreter detects a beamformed symbol period in an (n−1)th signal, a symbol power calculator measures an average signal level of a symbol in an nth signal, and a beamforming gain calculator calculates a beamforming gain of the nth signal by adding a beamforming gain of the (n−1)th signal to a power difference between a signal of a beamformed symbol period and a signal of a non-beamformed symbol period in the nth signal using information about the beamformed symbol period of the (n−1)th signal and the average signal level of the symbol in the nth signal.

    Abstract translation: 提供了一种在BWA通信系统中的AGC装置和方法,其中MAP解释器在第(n-1)个信号中检测波束形成的符号周期,符号功率计算器测量第n个信号中的符号的平均信号电平, 并且波束成形增益计算器通过将第(n-1)个信号的波束成形增益与波束形成的符号周期的信号和非波束形成的符号周期的信号之间的功率差相加,来计算第n个信号的波束成形增益, 使用关于第(n-1)个信号的波束形成的符号周期的信息的第n个信号和第n个信号中的符号的平均信号电平。

    APPARATUS AND METHOD FOR CANCELING DC OFFSET IN BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM
    13.
    发明申请
    APPARATUS AND METHOD FOR CANCELING DC OFFSET IN BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM 有权
    宽带无线接入通信系统中取消直流偏移的装置及方法

    公开(公告)号:US20090129494A1

    公开(公告)日:2009-05-21

    申请号:US12275308

    申请日:2008-11-21

    CPC classification number: H04L25/061 H04L27/2647 H04L27/2656

    Abstract: An apparatus and method for canceling a Direct Current (DC) offset in a Broadband Wireless Access (BWA) communication system are provided. The method includes canceling a DC offset by performing self-calibration in a modulator/demodulator (modem), attempting initial synchronization acquisition in the modem, and if the initial synchronization acquisition succeeds, canceling a DC offset by performing DC offset trace and cancellation.

    Abstract translation: 提供一种用于在宽带无线接入(BWA)通信系统中取消直流(DC)偏移的装置和方法。 该方法包括通过在调制解调器(调制解调器)中进行自校准,在调制解调器中尝试初始同步捕获,以及初始同步捕获成功,通过执行DC偏移跟踪和消除来消除DC偏移来消除DC偏移。

    Block-constrained TCQ method, and method and apparatus for quantizing LSF parameter employing the same in speech coding system
    16.
    发明授权
    Block-constrained TCQ method, and method and apparatus for quantizing LSF parameter employing the same in speech coding system 有权
    块约束TCQ方法,以及在语音编码系统中量化LSF参数的方法和装置

    公开(公告)号:US07630890B2

    公开(公告)日:2009-12-08

    申请号:US10780899

    申请日:2004-02-19

    CPC classification number: G10L19/0212 G10L19/06

    Abstract: A block-constrained Trellis coded quantization (TCQ) method and a method and apparatus for quantizing line spectral frequency (LSF) parameters employing the same in a speech coding system wherein the LSF coefficient quantizing method includes: removing the direct current (DC) component in an input LSF coefficient vector; generating a first prediction error vector by performing inter-frame and intra-frame prediction for the LSF coefficient vector, in which the DC component is removed, quantizing the first prediction error vector by using the BC-TCQ algorithm, and by performing intra-frame and inter-frame prediction compensation, generating a quantized first LSF coefficient vector; generating a second prediction error vector by performing intra-frame prediction for the LSF coefficient vector, in which the DC component is removed, quantizing the second prediction error vector by using the BC-TCQ algorithm, and then, by performing intra-frame prediction compensation, generating a quantized second LSF coefficient vector; and selectively outputting a vector having a shorter Euclidian distance to the input LSF coefficient vector between the generated quantized first and second LSF coefficient vectors.

    Abstract translation: 块约束网格编码量化(TCQ)方法和用于量化在语音编码系统中采用该频谱频率频率(LSF)参数的线谱频率(LSF)参数的方法和装置,其中LSF系数量化方法包括:去除直流(DC)分量 输入LSF系数向量; 通过对其中去除了DC分量的LSF系数向量进行帧间和帧内预测来生成第一预测误差向量,通过使用BC-TCQ算法量化第一预测误差向量,并且通过执行帧内 和帧间预测补偿,生成量化的第一LSF系数向量; 通过对去除了DC分量的LSF系数向量进行帧内预测,​​通过使用BC-TCQ算法对第二预测误差向量进行量化,然后通过进行帧内预测补偿来生成第二预测误差矢量 产生量化的第二LSF系数矢量; 并且在生成的量化的第一和第二LSF系数向量之间选择性地输出具有较短的欧几里德距离的向量到输入的LSF系数向量。

    Apparatus and method for removing DC offset in wireless communication system
    17.
    发明授权
    Apparatus and method for removing DC offset in wireless communication system 有权
    在无线通信系统中去除直流偏移的装置和方法

    公开(公告)号:US09401831B2

    公开(公告)日:2016-07-26

    申请号:US12908246

    申请日:2010-10-20

    CPC classification number: H04L25/062

    Abstract: An apparatus and method for removing a Direct Current (DC) offset at a receiving terminal in a wireless communication system are provided. In the method, a frame is divided into at least two time resource blocks. Resource allocation information is used to discriminate between at least one time resource block of a data-unmapped interval and at least one time resource block of a data-mapped interval. The DC offset is measured during the data-unmapped interval. The DC offset is compensated during the data-unmapped interval on a time resource block basis by using the measured DC offset.

    Abstract translation: 提供了一种用于在无线通信系统中的接收终端处去除直流(DC)偏移的装置和方法。 在该方法中,将帧划分为至少两个时间资源块。 资源分配信息用于区分数据未映射间隔的至少一个时间资源块和数据映射间隔的至少一个时间资源块。 在数据未映射间隔期间测量直流偏移。 通过使用测量的直流偏移,在时间资源块的数据未映射间隔期间补偿DC偏移。

    Apparatus and method for canceling direct current (DC) offset in broadband wireless access communication system
    18.
    发明授权
    Apparatus and method for canceling direct current (DC) offset in broadband wireless access communication system 有权
    宽带无线接入通信系统中取消直流(DC)偏移的装置和方法

    公开(公告)号:US08249194B2

    公开(公告)日:2012-08-21

    申请号:US12275308

    申请日:2008-11-21

    CPC classification number: H04L25/061 H04L27/2647 H04L27/2656

    Abstract: An apparatus and method for canceling a Direct Current (DC) offset in a Broadband Wireless Access (BWA) communication system are provided. The method includes canceling a DC offset by performing self-calibration in a modulator/demodulator (modem), attempting initial synchronization acquisition in the modem, and if the initial synchronization acquisition succeeds, canceling a DC offset by performing DC offset trace and cancellation.

    Abstract translation: 提供一种用于在宽带无线接入(BWA)通信系统中取消直流(DC)偏移的装置和方法。 该方法包括通过在调制解调器(调制解调器)中进行自校准,在调制解调器中尝试初始同步捕获,以及初始同步捕获成功,通过执行DC偏移跟踪和消除来消除DC偏移来消除DC偏移。

    APPARATUS AND METHOD FOR TIME-VARYING CYCLIC DELAY DIVERSITY IN A WIRELESS COMMUNICATION SYSTEM
    19.
    发明申请
    APPARATUS AND METHOD FOR TIME-VARYING CYCLIC DELAY DIVERSITY IN A WIRELESS COMMUNICATION SYSTEM 有权
    无线通信系统中时延变化的时变设备及方法

    公开(公告)号:US20090141620A1

    公开(公告)日:2009-06-04

    申请号:US12325457

    申请日:2008-12-01

    CPC classification number: H04L27/2626 H04B7/0671 H04L27/2665

    Abstract: An apparatus and method for Time-Varying Cyclic Delay Diversity (TV-CDD) in a wireless communication system are provided. The method includes, if there is a signal of an antenna path to be transmitted, determining if a current time corresponds to a preamble zone within a frame and, if the current time corresponds to the preamble zone within the frame, shifting a partial antenna path signal forward compared to a reference timing and shifting a remaining partial antenna path signal equally or backward compared to the reference timing.

    Abstract translation: 提供了一种用于无线通信系统中的时变循环延迟分集(TV-CDD)的装置和方法。 该方法包括:如果存在要发送的天线路径的信号,则确定当前时间是否对应于帧内的前导码区域,并且如果当前时间对应于帧内的前导码区域,则移位部分天线路径 信号与参考定时相比,并且与参考定时相比平移或相反地移位剩余的部分天线路径信号。

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