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    • 2. 发明授权
    • System and method for performing weighted processing on uplink signal
    • 对上行链路信号执行加权处理的系统和方法
    • US08600294B2
    • 2013-12-03
    • US12944484
    • 2010-11-11
    • Zheng YiGengshi Wu
    • Zheng YiGengshi Wu
    • H04B1/60
    • H04B7/0617H04B7/022H04B7/026H04B7/0619
    • An uplink signal weighted processing method is disclosed. A first channel impulse response from a Mobile Station (MS) to a relay station, and a second channel impulse response from the relay station to a Base Station (BS) are acquired. A relay weight and a demodulation weight are determined according to the first channel impulse response and the second channel impulse response. The relay weight is sent to the relay station and the demodulation weight is sent to the BS, so as to enable the relay station to perform weighted processing on an MS uplink signal received by the relay station according to the relay weight to obtain an uplink relay weighted signal and to send the uplink relay weighted signal to the BS, and so as to enable the BS to perform demodulation weighted processing on the uplink relay weighted signal received by the BS according to the demodulation weight to obtain an uplink estimation signal corresponding to the MS uplink signal.
    • 公开了一种上行链路信号加权处理方法。 获取从移动站(MS)到中继站的第一信道脉冲响应以及从中继站到基站(BS)的第二信道脉冲响应。 根据第一信道脉冲响应和第二信道脉冲响应来确定中继权重和解调权重。 继电器权重发送到中继站,并将解调权重发送到BS,以使得中继站能够根据中继权重对由中继站接收的MS上行链路信号执行加权处理,以获得上行链路中继 并向BS发送上行中继加权信号,以便BS能够根据解调权重对由BS接收的上行中继加权信号进行解调加权处理,以获得对应于上行链路中继加权信号的上行链路估计信号 MS上行信号。
    • 4. 发明申请
    • SIGNAL DETECTING METHOD AND DEVICE FOR MULTI-CODEWORD MIMO SYSTEM
    • 用于多编码MIMO系统的信号检测方法和装置
    • US20110142117A1
    • 2011-06-16
    • US12981878
    • 2010-12-30
    • Meng HUAGengshi WuChunling ZhangShurong Jiao
    • Meng HUAGengshi WuChunling ZhangShurong Jiao
    • H04B3/46H04B7/02
    • H04L1/06H04L25/0242
    • A signal detecting method and device for a multi-codeword multi-input multi-output (MIMO) system are provided, which are used in the field of communication and solve the problem that it is complex to implement a signal detecting method in the multi-codeword MIMO system and the error between the signal obtained through detection and the signal actually transmitted from the transmitting end is large. The method includes: converting a received complex number signal into a real number signal; performing channel estimation to obtain a channel matrix; correcting the channel matrix to obtain an equivalent corrected matrix; generating an equivalent detecting signal according to the equivalent corrected matrix and the real number signal obtained through conversion; quantizing the equivalent detecting signal to obtain an equivalent quantized detecting signal; and generating a signal transmitted from a transmitting end according to the equivalent quantized detecting signal. The method and device can be applied in a receiving device of a multi-codeword MIMO system.
    • 提供了一种用于多码字多输入多输出(MIMO)系统的信号检测方法和装置,其用于通信领域,并且解决了在多通道中实现信号检测方法复杂的问题, 码字MIMO系统和通过检测获得的信号与从发送端实际发送的信号之间的误差大。 该方法包括:将接收到的复数信号转换为实数信号; 执行信道估计以获得信道矩阵; 校正信道矩阵以获得等效校正矩阵; 根据等效校正矩阵和通过转换获得的实数信号产生等效检测信号; 量化等效检测信号以获得等效量化检测信号; 以及根据等效量化检测信号生成从发送端发送的信号。 该方法和装置可以应用于多码字MIMO系统的接收装置中。
    • 5. 发明授权
    • Signal detecting method and device for multi-codeword MIMO system
    • 用于多码字MIMO系统的信号检测方法和装置
    • US08300677B2
    • 2012-10-30
    • US12981878
    • 2010-12-30
    • Meng HuaGengshi WuChunling ZhangShurong Jiao
    • Meng HuaGengshi WuChunling ZhangShurong Jiao
    • H04B1/00
    • H04L1/06H04L25/0242
    • A signal detecting method and device for a multi-codeword multi-input multi-output (MIMO) system are provided, which are used in the field of communication and solve the problem that it is complex to implement a signal detecting method in the multi-codeword MIMO system and the error between the signal obtained through detection and the signal actually transmitted from the transmitting end is large. The method includes: converting a received complex number signal into a real number signal; performing channel estimation to obtain a channel matrix; correcting the channel matrix to obtain an equivalent corrected matrix; generating an equivalent detecting signal according to the equivalent corrected matrix and the real number signal obtained through conversion; quantizing the equivalent detecting signal to obtain an equivalent quantized detecting signal; and generating a signal transmitted from a transmitting end according to the equivalent quantized detecting signal. The method and device can be applied in a receiving device of a multi-codeword MIMO system.
    • 提供了一种用于多码字多输入多输出(MIMO)系统的信号检测方法和装置,其用于通信领域,并且解决了在多通道中实现信号检测方法复杂的问题, 码字MIMO系统和通过检测获得的信号与从发送端实际发送的信号之间的误差大。 该方法包括:将接收到的复数信号转换为实数信号; 执行信道估计以获得信道矩阵; 校正信道矩阵以获得等效校正矩阵; 根据等效校正矩阵和通过转换获得的实数信号产生等效检测信号; 量化等效检测信号以获得等效量化检测信号; 以及根据等效量化检测信号生成从发送端发送的信号。 该方法和装置可以应用于多码字MIMO系统的接收装置中。
    • 7. 发明授权
    • Method and system for removing radio frequency direct current offset in signal
    • 消除信号中射频直流偏移的方法和系统
    • US07881687B2
    • 2011-02-01
    • US11848001
    • 2007-08-30
    • Jing YangYu LiuGengshi Wu
    • Jing YangYu LiuGengshi Wu
    • H04B1/10H04B17/00
    • H04B1/30H04L25/063
    • Embodiments of the present invention provide a method and a system for removing a Radio Frequency (RF) Direct Current (DC) offset in a signal. The method includes: subtracting a canceling DC from a signal carrying an RF DC offset and generating an RF DC offset residual; outputting the signal when the RF DC offset residual in the signal is zero; adjusting the canceling DC according to the RF DC offset residual in the signal if the RF DC offset residual is not zero. The system includes a receiver, an RF DC offset canceling unit, a determining unit, a canceling DC adjusting unit, and an output unit. With embodiments of the present invention, the RF DC offset in the signal may be effectively removed.
    • 本发明的实施例提供一种用于去除信号中的射频(RF)直流(DC)偏移的方法和系统。 该方法包括:从承载RF DC偏移的信号中减去消除DC并产生RF DC偏移残差; 当信号中的RF DC偏移残差为零时,输出信号; 如果RF DC偏移残差不为零,则根据信号中的RF DC偏移残差调整抵消DC。 该系统包括接收器,RF DC偏移消除单元,确定单元,消除DC调整单元和输出单元。 利用本发明的实施例,可以有效地消除信号中的RF DC偏移。
    • 8. 发明申请
    • METHOD AND APPARATUS FOR SEARCHING FOR MODES AND FREQUENCIES
    • 用于搜索模式和频率的方法和装置
    • US20100222056A1
    • 2010-09-02
    • US12779712
    • 2010-05-13
    • Gengshi Wu
    • Gengshi Wu
    • H04W4/00H04B17/00
    • H04W48/20H04B1/0053H04B1/70758H04B1/7077H04B1/7087H04J11/0083
    • The present invention discloses a method and an apparatus for searching for modes and frequencies. The method includes: obtaining signal energy of all frequency grids within a frequency range; obtaining energy of each mode on a smallest bandwidth according to the signal energy of the grids; sorting the energy on the smallest bandwidths of all modes; and accessing a specified number of frequencies and modes of the highest energy in the sorting result. With the present invention, energy on the smallest bandwidths of all modes at a frequency band is obtained and sorted and then an access mode is determined according to the sorting result. Thus the access mode to use for a specified frequency can be quickly determined so as to improve the access success rate of a terminal in the subsequent access process.
    • 本发明公开了一种用于搜索模式和频率的方法和装置。 该方法包括:获得频率范围内所有频率网格的信号能量; 根据网格的信号能量,在最小带宽上获取每个模式的能量; 在所有模式的最小带宽上排序能量; 并在排序结果中访问指定数量的最高能量的频率和模式。 利用本发明,获得在频带上的所有模式的最小带宽上的能量并进行排序,然后根据分类结果确定访问模式。 因此,可以快速确定用于指定频率的访问模式,以便在随后的访问过程中提高终端的访问成功率。
    • 9. 发明授权
    • Method and device for determining smooth window length in channel estimation
    • 用于确定信道估计中平滑窗口长度的方法和装置
    • US08780956B2
    • 2014-07-15
    • US13191151
    • 2011-07-26
    • Gengshi WuFengyu SunMeng HuaChunling ZhangShurong Jiao
    • Gengshi WuFengyu SunMeng HuaChunling ZhangShurong Jiao
    • H04B1/7073H04L25/02
    • H04L25/0228
    • A method and a device for determining a smooth window length in channel estimation is provided. The method includes: obtaining autocorrelation values of pilot signals, where the autocorrelation values include first autocorrelation values and second autocorrelation values, at least two first autocorrelation values exist, and at least one second autocorrelation value exists; determining a speed range according to symbols of the first autocorrelation values or the symbols of the first autocorrelation values and a ratio value between the second autocorrelation value and one of the first autocorrelation values; and determining the smooth window length according to the speed range. Through the method provided in embodiments of the present invention, the problems caused by a fixed smooth window length may be avoided, and this improves system performance.
    • 提供了一种用于确定信道估计中的平滑窗口长度的方法和装置。 该方法包括:获得导频信号的自相关值,其中自相关值包括第一自相关值和第二自相关值,存在至少两个第一自相关值,并且存在至少一个第二自相关值; 根据所述第一自相关值的符号或所述第一自相关值的符号以及所述第二自相关值与所述第一自相关值之一之间的比值确定速度范围; 并根据速度范围确定平滑的窗口长度。 通过本发明实施例提供的方法,可以避免固定平滑窗口长度引起的问题,从而提高系统性能。
    • 10. 发明授权
    • Method and apparatus for searching for modes and frequencies
    • 用于搜索模式和频率的方法和装置
    • US08467787B2
    • 2013-06-18
    • US12779712
    • 2010-05-13
    • Gengshi Wu
    • Gengshi Wu
    • H04W4/00H04W36/00H04M1/00H04B7/216H04B7/212H04J3/00
    • H04W48/20H04B1/0053H04B1/70758H04B1/7077H04B1/7087H04J11/0083
    • The present invention discloses a method and an apparatus for searching for modes and frequencies. The method includes: obtaining signal energy of all frequency grids within a frequency range; obtaining energy of each mode on a smallest bandwidth according to the signal energy of the grids; sorting the energy on the smallest bandwidths of all modes; and accessing a specified number of frequencies and modes of the highest energy in the sorting result. With the present invention, energy on the smallest bandwidths of all modes at a frequency band is obtained and sorted and then an access mode is determined according to the sorting result. Thus the access mode to use for a specified frequency can be quickly determined so as to improve the access success rate of a terminal in the subsequent access process.
    • 本发明公开了一种用于搜索模式和频率的方法和装置。 该方法包括:获得频率范围内所有频率网格的信号能量; 根据网格的信号能量,在最小带宽上获取每个模式的能量; 在所有模式的最小带宽上排序能量; 并在排序结果中访问指定数量的最高能量的频率和模式。 利用本发明,获得在频带上的所有模式的最小带宽上的能量并进行排序,然后根据分类结果确定访问模式。 因此,可以快速确定用于指定频率的访问模式,以便在随后的访问过程中提高终端的访问成功率。