Apparatus and method for estimating channel in broadband wireless access (BWA) communication system
    1.
    发明授权
    Apparatus and method for estimating channel in broadband wireless access (BWA) communication system 有权
    宽带无线接入(BWA)通信系统估计信道的装置和方法

    公开(公告)号:US07936848B2

    公开(公告)日:2011-05-03

    申请号:US12003201

    申请日:2007-12-20

    IPC分类号: H04L27/06 H03D1/00

    CPC分类号: H04L25/0232 H04L27/2647

    摘要: An apparatus and a method for estimating a channel in a Broadband Wireless Access (BWA) communication system are provided. The apparatus includes a subcarrier demapper for extracting pilot symbols at preset positions for a channel estimation; and a channel estimator for acquiring channel estimate values of subcarriers through an Infinite Impulse Response (IIR) filtering using the pilot symbols provided from the subcarrier demapper and a preset filter factor. Thus, the channel condition can be estimated by taking into account the channel change.

    摘要翻译: 提供了一种用于估计宽带无线接入(BWA)通信系统中的信道的装置和方法。 该装置包括用于在用于信道估计的预设位置处提取导频符号的子载波解映射器; 以及信道估计器,用于通过使用从子载波解映射器提供的导频符号和预设滤波器因子通过无限脉冲响应(IIR)滤波获取子载波的信道估计值。 因此,可以通过考虑信道变化来估计信道条件。

    Apparatus and method for estimating channel in broadband wireless access (BWA) communication system
    2.
    发明申请
    Apparatus and method for estimating channel in broadband wireless access (BWA) communication system 有权
    宽带无线接入(BWA)通信系统估计信道的装置和方法

    公开(公告)号:US20080152043A1

    公开(公告)日:2008-06-26

    申请号:US12003201

    申请日:2007-12-20

    IPC分类号: H03D1/00 H04L27/06

    CPC分类号: H04L25/0232 H04L27/2647

    摘要: An apparatus and a method for estimating a channel in a Broadband Wireless Access (BWA) communication system are provided. The apparatus includes a subcarrier demapper for extracting pilot symbols at preset positions for a channel estimation; and a channel estimator for acquiring channel estimate values of subcarriers through an Infinite Impulse Response (IIR) filtering using the pilot symbols provided from the subcarrier demapper and a preset filter factor. Thus, the channel condition can be estimated by taking into account the channel change.

    摘要翻译: 提供了一种用于估计宽带无线接入(BWA)通信系统中的信道的装置和方法。 该装置包括用于在用于信道估计的预设位置处提取导频符号的子载波解映射器; 以及信道估计器,用于通过使用从子载波解映射器提供的导频符号和预设滤波器因子通过无限脉冲响应(IIR)滤波获取子载波的信道估计值。 因此,可以通过考虑信道变化来估计信道条件。

    Apparatus and method for automatic gain control in a broadband wireless access communication system
    3.
    发明申请
    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:US20080031387A1

    公开(公告)日:2008-02-07

    申请号:US11882596

    申请日:2007-08-02

    IPC分类号: H04L27/08

    摘要: 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.

    摘要翻译: 提供了一种BWA通信系统中的AGC装置和方法,其中MAP解释器在第(n-1)个第信号中检测波束形成的符号周期,符号功率计算器测量平均信号电平 在n 信号中的符号,并且波束形成增益计算器通过将第(n-1)个SUP的波束成形增益相加来计算第n个信号的波束成形增益 使用关于波束形成符号周期的波束形成的符号周期的信息,使用波束形成的符号周期的信号和第n 信号中的非波束形成的符号周期的信号之间的功率差信号 (n-1)信号和第n个信号中的符号的平均信号电平。

    Apparatus and method for automatic gain control in a broadband wireless access communication system
    4.
    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

    IPC分类号: H04L27/28 H04L27/08

    摘要: 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.

    摘要翻译: 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 selecting operation mode in MIMO communication system
    5.
    发明授权
    Apparatus and method for selecting operation mode in MIMO communication system 有权
    MIMO通信系统中选择操作模式的装置和方法

    公开(公告)号:US08144796B2

    公开(公告)日:2012-03-27

    申请号:US12248282

    申请日:2008-10-09

    IPC分类号: H04B7/02

    摘要: An apparatus and a method for selecting an operation mode to improve a throughput in a mobile communication system are provided. The apparatus includes a Carrier to Interference and Noise Ratio (CINR) predictor for predicting a probable average and dispersion for a CINR measured using a preamble of a received pilot signal or radio signal, a metric calculator for calculating a throughput for each Modulation and Coding Scheme Level (MCS_Level) by using the probable average and dispersion for the predicted CINR and for selecting an MCS_Level having a maximum throughput, and an operation mode selector for selecting an operation mode of the selected MCS_Level having the maximum throughput.

    摘要翻译: 提供了一种用于选择提高移动通信系统中的吞吐量的操作模式的装置和方法。 该装置包括载波干扰和噪声比(CINR)预测器,用于预测使用接收到的导频信号或无线电信号的前同步码测量的CINR的可能平均值和色散,用于计算每个调制和编码方案的吞吐量的度量计算器 电平(MCS_Level),以及用于选择具有最大吞吐量的MCS_Level的可能平均值和色散,以及用于选择具有最大吞吐量的所选MCS_Level的操作模式的操作模式选择器。

    Apparatus and method for removing DC offset in a frequency direct-conversion device
    6.
    发明授权
    Apparatus and method for removing DC offset in a frequency direct-conversion device 失效
    用于去除频率直接转换装置中的直流偏移的装置和方法

    公开(公告)号:US07356320B2

    公开(公告)日:2008-04-08

    申请号:US11015471

    申请日:2004-12-20

    IPC分类号: H04B1/30

    CPC分类号: H04B1/30

    摘要: An apparatus for removing a DC offset during frequency direct conversion in a reception device of a wireless communication system. In the apparatus, an adder receives a digital baseband signal comprising a DC component, receives an estimated DC offset value, and calculates a difference between the digital baseband signal with the DC component and the estimated DC offset value. A DC offset calculator receives gain mode information of an analog element of the reception device, and calculates the estimated DC offset value according to the gain mode.

    摘要翻译: 一种用于在无线通信系统的接收装置中的频率直接转换期间去除DC偏移的装置。 在该装置中,加法器接收包括DC分量的数字基带信号,接收估计的DC偏移值,并计算具有DC分量的数字基带信号与估计的DC偏移值之间的差。 DC偏移计算器接收接收装置的模拟元件的增益模式信息,并根据增益模式计算估计的DC偏移值。

    Method and apparatus for combining of HRPD F-MAC channel in soft/softer handoff region in a mobile communication system
    7.
    发明申请
    Method and apparatus for combining of HRPD F-MAC channel in soft/softer handoff region in a mobile communication system 审中-公开
    用于在移动通信系统的软/软切换区域中组合HRPD F-MAC信道的方法和装置

    公开(公告)号:US20070189367A1

    公开(公告)日:2007-08-16

    申请号:US11652973

    申请日:2007-01-12

    IPC分类号: H04B1/00

    摘要: Provided is a method and apparatus for efficient combining of a MAC channel in a rake receiver of an HRPD system. The method includes demodulating symbols from fingers to which different MAC indexes (MACIndex) are assigned by different sectors; aligning and discriminating channels transmitted in in-phase and channels transmitted in quadrature-phase by referring to the MAC indexes allocated to users according to sectors; soft-combining the aligned and discriminated symbols according to cells; demultiplexing the soft-combined symbols according to MAC sub-channels; and determining a symbol command for each MAC sub-channel of each cell and performing logical combining of determined symbols.

    摘要翻译: 提供了一种用于在HRPD系统的耙式接收机中高效组合MAC信道的方法和装置。 该方法包括从不同扇区分配不同MAC索引(MACIndex)的手指解调符号; 通过参考根据扇区分配给用户的MAC索引来对准和鉴别在同相中发送的信道和正交相位发送的信道; 根据细胞软化组合对准和鉴别的符号; 根据MAC子信道对软组合符号进行解复用; 以及确定每个小区的每个MAC子信道的符号命令,并执行所确定的符号的逻辑组合。

    Apparatus and method for removing DC offset in a frequency direct-conversion device
    8.
    发明申请
    Apparatus and method for removing DC offset in a frequency direct-conversion device 失效
    用于去除频率直接转换装置中的直流偏移的装置和方法

    公开(公告)号:US20050136874A1

    公开(公告)日:2005-06-23

    申请号:US11015471

    申请日:2004-12-20

    IPC分类号: H04L25/12 H04B1/30 H04B1/10

    CPC分类号: H04B1/30

    摘要: An apparatus for removing a DC offset during frequency direct conversion in a reception device of a wireless communication system. In the apparatus, an adder receives a digital baseband signal comprising a DC component, receives an estimated DC offset value, and calculates a difference between the digital baseband signal with the DC component and the estimated DC offset value. A DC offset calculator receives gain mode information of an analog element of the reception device, and calculates the estimated DC offset value according to the gain mode.

    摘要翻译: 一种用于在无线通信系统的接收装置中的频率直接转换期间去除DC偏移的装置。 在该装置中,加法器接收包括DC分量的数字基带信号,接收估计的DC偏移值,并计算具有DC分量的数字基带信号与估计的DC偏移值之间的差。 DC偏移计算器接收接收装置的模拟元件的增益模式信息,并根据增益模式计算估计的DC偏移值。

    Method and apparatus for receiving signal in wireless communication system
    9.
    发明授权
    Method and apparatus for receiving signal in wireless communication system 有权
    用于在无线通信系统中接收信号的方法和装置

    公开(公告)号:US08363701B2

    公开(公告)日:2013-01-29

    申请号:US12806859

    申请日:2010-08-20

    IPC分类号: H04B1/00

    摘要: A mobile terminal includes a channel estimation module that is maintained in an active state. A controller determines an activation time point of an equalizer weight calculation module for calculating a tap coefficient. The activation time point is earlier than an activation time point of a main equalizer module, and activates the equalizer weight calculation module at the activation time point so as to calculate the tap coefficient. When the equalizer weight calculation module's operation is completed, the controller activates the main equalizer module, detects a mobile terminal ID, activates an interference cancellation module, and controls the main equalizer module to provide a data signal demodulator with the data signal compensated for by the tap coefficient. A demodulator demodulates the compensated data signal.

    摘要翻译: 移动终端包括维持在活动状态的信道估计模块。 控制器确定用于计算抽头系数的均衡器权重计算模块的激活时间点。 激活时间点早于主均衡器模块的激活时间点,并且在激活时间点激活均衡器权重计算模块,以便计算抽头系数。 当均衡器重量计算模块的操作完成时,控制器激活主均衡器模块,检测移动终端ID,激活干扰消除模块,并控制主均衡器模块,为数据信号解调器提供数据信号补偿 抽头系数。 解调器解调补偿数据信号。

    Automatic gain control apparatus and method for compressed mode in MIMO system
    10.
    发明授权
    Automatic gain control apparatus and method for compressed mode in MIMO system 失效
    MIMO系统中压缩模式的自动增益控制装置及方法

    公开(公告)号:US08724726B2

    公开(公告)日:2014-05-13

    申请号:US12607626

    申请日:2009-10-28

    IPC分类号: H04B7/02

    摘要: An automatic gain control apparatus and method for a compressed mode in a MIMO system are provided. The method includes determining power at a first frequency band using a first receiver, simultaneously determining power at a second frequency band using a second receiver in a compressed mode, if the second receiver changes a power determination frequency band into the first frequency band, correcting the power determination value of the first receiver, and applying the corrected power determination value of the first receiver to the second receiver.

    摘要翻译: 提供了一种用于MIMO系统中的压缩模式的自动增益控制装置和方法。 该方法包括使用第一接收机确定第一频带处的功率,同时使用第二接收机以压缩模式确定第二频带处的功率,如果第二接收机将功率确定频带改变为第一频带, 第一接收机的功率确定值,以及将第一接收机的校正功率确定值应用于第二接收机。