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    • 2. 发明申请
    • Method and Arrangement in Wireless Communications System
    • 无线通信系统的方法与布置
    • US20140211892A1
    • 2014-07-31
    • US13880900
    • 2010-10-25
    • Zhiheng GuoRuiqi ZhangHai Wang
    • Zhiheng GuoRuiqi ZhangHai Wang
    • H04B1/12H04L25/02
    • H04B1/12H04L5/0023H04L25/0204H04L25/0212H04L25/022H04L25/0232H04L27/2647
    • The present invention relates to a receiving node, and to a related method of adjusting a frequency domain channel estimate in a receiving node of a wireless communication system using Orthogonal Frequency Division Multiplexing. The method comprises estimating (210) a phase rotation of the frequency domain channel estimate, and compensating (220) for the estimated phase rotation in the frequency domain channel estimate. It also comprises transforming (230) the compensated frequency domain channel estimate into a time domain channel estimate, filtering (240) the time domain channel estimate to suppress noise, transforming (250) the filtered time domain channel estimate back into a noise suppressed frequency domain channel estimate, and adding (260) the estimated phase rotation in the noise suppressed frequency domain channel estimate to achieve an adjusted and improved frequency domain channel estimate.
    • 本发明涉及一种接收节点,以及一种使用正交频分复用技术在无线通信系统的接收节点中调整频域信道估计的相关方法。 该方法包括估计(210)频域信道估计的相位旋转,以及对频域信道估计中的估计相位旋转进行补偿(220)。 它还包括将经补偿的频域信道估计转换(230)到时域信道估计中,对时域信道估计进行滤波(240)以抑制噪声,将经过滤波的时域信道估计转换(250)成为噪声抑制频域 信道估计,并且在噪声抑制频域信道估计中相加(260)估计的相位旋转,以实现调整和改进的频域信道估计。
    • 4. 发明授权
    • Methods and apparatus for enhancing channel estimation
    • 增强信道估计的方法和装置
    • US08462904B2
    • 2013-06-11
    • US13031812
    • 2011-02-22
    • Zhiheng GuoHai WangRuiqi Zhang
    • Zhiheng GuoHai WangRuiqi Zhang
    • H04B1/10
    • H04L25/024H04L25/0218H04L25/022H04L27/2647
    • A noisy frequency-domain channel estimate enhancer includes an over-sampler configured to transform the noisy frequency-domain channel estimate into a time-domain channel estimate that is virtually over-sampled by an integer factor m. The over-sampler is connected to a de-interleaver configured to divide the time-domain channel estimate into m de-interleaved sub-vectors. The de-interleaver is connected to a suppressor configured to suppress noisy taps from each de-interleaved sub-vectors to form m noise suppressed sub-vectors. The suppressor is connected to a selector configured to select a noise suppressed sub-vector associated with a highest signal-to-noise ratio. The selector is connected to a discrete Fourier transformer configured to transform the selected noise suppressed sub-vector into a noise suppressed preliminary frequency-domain channel estimate. The discrete Fourier transformer is connected to a phase-shifter configured to phase-adjust the taps of the noise suppressed preliminary frequency-domain channel estimate to form an enhanced frequency-domain channel estimate.
    • 噪声频域信道估计增强器包括过采样器,其被配置为将噪声频域信道估计转换为实际上被整数因子m过采样的时域信道估计。 过采样器连接到解交织器,其被配置为将时域信道估计分割成m个去交织的子向量。 解交织器连接到抑制器,该抑制器被配置为抑制来自每个去交织的子向量的噪声抽头以形成m个噪声抑制的子向量。 抑制器连接到选择器,其被配置为选择与最高信噪比相关联的噪声抑制子矢量。 选择器连接到配置成将所选择的噪声抑制子矢量变换成噪声抑制的初步频域信道估计的离散付里叶变换器。 离散傅立叶变换器连接到移相器,其被配置为相位调整噪声抑制的初步频域信道估计的抽头,以形成增强的频域信道估计。
    • 5. 发明授权
    • Method and arrangement in a wireless communication system
    • 无线通信系统中的方法和布置
    • US08447317B2
    • 2013-05-21
    • US13383328
    • 2010-12-09
    • Shaohua LiZhiheng Guo
    • Shaohua LiZhiheng Guo
    • H04W4/00
    • H04L5/0058H04L1/0061H04L5/0037H04L27/2601H04L2001/0093H04W72/1289
    • Method and arrangement in a user equipment (120) for selecting a radio channel out of a plurality of candidate radio channels. The selected radio channel is to be utilized for receiving control information from a base station (110). The user equipment (120) and the base station (110) are comprised in a wireless communication system (100). The method comprises determining (302) a physical entity of a signal received from the base station (110) over a candidate radio channel, out of the plurality of candidate radio channels. If the determined physical entity fulfills a criterion, the associated candidate radio channel is prioritized (303) for a check sum check. The check sum check is performed (304) on data received over the prioritized candidate radio channel. If the check sum check is successful, the prioritized candidate radio channel is selected (305).
    • 用于从多个候选无线电信道中选择无线电信道的用户设备(120)中的方法和装置。 所选择的无线电信道将用于从基站(110)接收控制信息。 用户设备(120)和基站(110)包括在无线通信系统(100)中。 该方法包括:在多个候选无线电信道中,通过候选无线电信道确定(302)从基站(110)接收的信号的物理实体。 如果确定的物理实体满足标准,则相关联的候选无线电信道被优先化(303)用于校验和检查。 对通过优先化候选无线电信道接收的数据执行校验和检查(304)。 如果检查和检查成功,则选择优先级候选无线电信道(305)。
    • 8. 发明申请
    • Methods and Radio Network Nodes For Measuring Interference
    • 用于测量干扰的方法和无线电网络节点
    • US20140219113A1
    • 2014-08-07
    • US13817665
    • 2012-11-26
    • Shaohua LiZhiheng GuoJinhua LiuXinghua SongZhan Zhang
    • Shaohua LiZhiheng GuoJinhua LiuXinghua SongZhan Zhang
    • H04L5/00H04W24/08
    • H04B17/345H04L5/0032H04W24/08H04W52/143H04W52/241H04W52/243H04W72/0446
    • A first radio network node (110) and a method therein for measuring interference as well as a second radio network node (120) and a method therein for enabling the first radio network node to measure interference are disclosed. The first radio network node (110) obtains (201) configuration information for indicating a designated subframe in which a reference signal for measurement of the interference is to be transmitted by the second radio network node (120). The second radio network node (120) obtains (202) configuration information for configuring a designed subframe for transmission of a reference signal. The first radio network node (110) receives (205), in the designated subframe indicated by the configuration information, the reference signal transmitted by the second radio network node (120). The first radio network node (110) determines (206) a value of the interference based on the reference signal.
    • 公开了一种用于测量干扰的第一无线电网络节点(110)及其中的方法以及第二无线电网络节点(120)及其中的方法,使第一无线电网络节点能够测量干扰。 第一无线网络节点(110)获取(201)用于指示由第二无线电网络节点(120)发送用于测量干扰的参考信号的指定子帧的配置信息。 第二无线电网络节点(120)获得用于配置用于发送参考信号的设计子帧的配置信息(202)。 第一无线电网络节点(110)在由配置信息指示的指定子帧中接收由第二无线电网络节点(120)发送的参考信号(205)。 第一无线电网络节点(110)基于参考信号确定(206)干扰的值。
    • 10. 发明申请
    • METHOD AND ARRANGEMENT IN A WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统中的方法和布置
    • US20120190377A1
    • 2012-07-26
    • US13383328
    • 2010-12-09
    • Shaohua LiZhiheng Guo
    • Shaohua LiZhiheng Guo
    • H04W72/10
    • H04L5/0058H04L1/0061H04L5/0037H04L27/2601H04L2001/0093H04W72/1289
    • Method and arrangement in a user equipment (120) for selecting a radio channel out of a plurality of candidate radio channels. The selected radio channel is to be utilized for receiving control information from a base station (110). The user equipment (120) and the base station (110) are comprised in a wireless communication system (100). The method comprises determining (302) a physical entity of a signal received from the base station (110) over a candidate radio channel, out of the plurality of candidate radio channels. If the determined physical entity fulfils a criterion, the associated candidate radio channel is prioritized (303) for a check sum check. The check sum check is performed (304) on data received over the prioritized candidate radio channel. If the check sum check is successful, the prioritized candidate radio channel is selected (305).
    • 用于从多个候选无线电信道中选择无线电信道的用户设备(120)中的方法和装置。 所选择的无线电信道将用于从基站(110)接收控制信息。 用户设备(120)和基站(110)包括在无线通信系统(100)中。 该方法包括:在多个候选无线电信道中,通过候选无线电信道确定(302)从基站(110)接收的信号的物理实体。 如果确定的物理实体满足标准,则相关联的候选无线电信道被优先化(303)用于校验和检查。 对通过优先化候选无线电信道接收的数据执行校验和检查(304)。 如果检查和检查成功,则选择优先级候选无线电信道(305)。