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    Radio receiver in a wireless communication system
    91.
    发明授权
    Radio receiver in a wireless communication system 有权
    无线电接收机在无线通信系统中

    公开(公告)号：US08934520B2

    公开(公告)日：2015-01-13

    申请号：US13575598

    申请日：2011-01-27

    Applicant: Carlo Luschi ,  Abdelkader Medles ,  Gang Wang

    Inventor： Carlo Luschi ,  Abdelkader Medles ,  Gang Wang

    IPC: H04B1/711 ,  H04L25/02 ,  H04B1/7113 ,  H04B1/7115 ,  H04B1/10 ,  H04B1/7117 ,  H04L25/03

    CPC classification number: H04B1/711 ,  H04B1/7117 ,  H04B2201/7071 ,  H04L25/0202 ,  H04L25/03006

    Abstract: A method, receiver and program for processing radio signals to identity an n-ray channel condition. The method comprises: receiving signal samples and estimating a plurality of channel taps from the samples; estimating for each of the channel taps a signal power and a disturbance power; filtering the signal power to provide a filtered signal power quantity; filtering the disturbance power to provide a filtered disturbance power quantity; using the filtered power quantities to determine n strongest channel taps; generating first and second comparison parameters using the strongest channel taps and at least one other channel tap; providing a comparison result based on the first and second comparison parameters and a threshold value, and; identifying an n-ray channel condition from the comparison result.

    Abstract translation: 一种用于处理无线电信号以识别n-ray信道条件的方法，接收机和程序。 该方法包括：从样本接收信号样本和估计多个信道抽头; 对每个信道抽头估计信号功率和干扰功率; 过滤信号功率以提供滤波信号功率量; 过滤扰动功率以提供滤波干扰功率; 使用滤波的功率量来确定n个最强的信道抽头; 使用最强的信道抽头和至少一个其他信道抽头生成第一和第二比较参数; 提供基于第一和第二比较参数和阈值的比较结果，以及; 从比较结果识别n射线通道条件。

    Phase Multi-Path Mitigation
    92.
    发明申请
    Phase Multi-Path Mitigation 有权
    相位多路径缓解

    公开(公告)号：US20140376598A1

    公开(公告)日：2014-12-25

    申请号：US14199923

    申请日：2014-03-06

    Applicant: Deere & Company

    Inventor： Richard G. Keegan ,  Ronald R. Hatch

    IPC: H04B1/711 ,  H04B1/7077

    CPC classification number: H04B1/711 ,  G01S19/22 ,  G01S19/30 ,  H04B1/7077 ,  H04B2001/70706

    Abstract: A method for mitigating a multi-path-induced error in a global navigation satellite system comprises, for a respective measurement epoch, obtaining respective representations of a composite signal including a plurality of value-pairs of the composite signal. The method further comprises, with respect to the measurement epoch: obtaining a plurality of coefficients for a set of linear equations based on the plurality of value-pairs of the composite signal; iteratively obtaining solutions for the set of linear equations, thereby solving for a code tracking timing offset, a time delay of a multi-path signal of the composite signal relative to its direct-path signal, and orthogonal representations of the multi-path signal; determining a phase error between the composite signal and the direct-path signal, due to the time delay, in accordance with the orthogonal representations of the multi-path signal; and correcting for the code tracking timing offset and the phase error.

    Abstract translation: 一种用于减轻全球导航卫星系统中的多路径引起的误差的方法包括：对于相应的测量时期，获得包括复合信号的多个值对的复合信号的各自表示。 该方法还包括关于测量时期：基于复合信号的多个值对获得用于一组线性方程的多个系数; 迭代地获得该组线性方程的解，从而求解码跟踪定时偏移，复合信号相对于其直接路径信号的多径信号的时间延迟，以及多径信号的正交表示; 根据多路径信号的正交表示，由于时间延迟确定复合信号和直接路径信号之间的相位误差; 并纠正码跟踪定时偏移和相位误差。

    MULTI-PATH DETECTION
    93.
    发明申请
    MULTI-PATH DETECTION 有权
    多路检测

    公开(公告)号：US20140241402A1

    公开(公告)日：2014-08-28

    申请号：US14234924

    申请日：2012-07-12

    Applicant: Philip Mattos

    Inventor： Philip Mattos

    IPC: H04B1/711

    CPC classification number: H04B1/711 ,  H04B1/7103 ,  H04B2201/70715 ,  H04B2201/709718

    Abstract: A method for detecting multi-path interference in a spread-spectrum signal. A variation of a first signal and a variation of a second signal is compared. The variation of the first signal corresponds to a correlation of the spread-spectrum signal and a spreading code having a first offset. The variation of the second signal corresponds to a correlation of the spread-spectrum signal and the spreading code having a second offset. Multi-path interference is detected in dependence on the comparison.

    Abstract translation: 一种用于检测扩频信号中的多径干扰的方法。 比较第一信号的变化和第二信号的变化。 第一信号的变化对应于扩频信号和具有第一偏移的扩展码的相关。 第二信号的变化对应于扩频信号和具有第二偏移的扩展码的相关。 根据比较检测多路径干扰。

    METHOD AND SYSTEM FOR INTERFERENCE SUPPRESSION IN WCDMA SYSTEMS
    95.
    发明申请
    METHOD AND SYSTEM FOR INTERFERENCE SUPPRESSION IN WCDMA SYSTEMS 有权
    WCDMA系统干扰抑制方法与系统

    公开(公告)号：US20120307872A1

    公开(公告)日：2012-12-06

    申请号：US13588297

    申请日：2012-08-17

    Applicant: Mark HAHM ,  Wei Luo ,  Arkady Molev-Shteiman ,  Hongwei Kong ,  Xiao-Feng Qi ,  Li Fung Chang ,  Nelson Sollenberger

    Inventor： Mark HAHM ,  Wei Luo ,  Arkady Molev-Shteiman ,  Hongwei Kong ,  Xiao-Feng Qi ,  Li Fung Chang ,  Nelson Sollenberger

    IPC: H04B1/711 ,  H04B1/10

    CPC classification number: H04B1/712 ,  H04J11/0063 ,  H04J13/0044 ,  H04J13/0048

    Abstract: Aspects of a method and system for interference suppression in WCDMA systems may include one or more circuits that are operable to receive a plurality of multipath signals via one or more receiving antennas. A plurality of weighting factor values may be computed based on the received multipath signals. Estimated signals may be based on the weighting factor values. Residual signals may be generated based on received signals and the estimated signals. Addback signals may be generated based on the estimated signals and the residual signals. Updated estimated signals may be generated based on the addback signals and the weighting factor values. Incremental signals may be generated based on the updated estimated signals and addback signals. Updated residual signals may be generated based on the incremental signals and previous residual signals. The interference suppressed signals may be generated based on the updated residual signals and updated estimated signals.

    Abstract translation: 用于WCDMA系统中的干扰抑制的方法和系统的方面可以包括可操作以经由一个或多个接收天线接收多个多径信号的一个或多个电路。 可以基于接收的多路径信号来计算多个加权因子值。 估计信号可以基于加权因子值。 可以基于接收的信号和估计的信号来产生残余信号。 可以基于估计的信号和残留信号来生成附加信号。 可以基于附加信号和加权因子值来生成更新的估计信号。 可以基于更新的估计信号和加法信号来产生增量信号。 可以基于增量信号和先前的剩余信号来生成更新的残留信号。 可以基于更新的残差信号和更新的估计信号来产生干扰抑制信号。

    Radio communication device receiver device and reception manner selecting method
    97.
    发明申请
    Radio communication device receiver device and reception manner selecting method 审中-公开
    无线电通信设备接收设备和接收方式选择方法

    公开(公告)号：US20050164644A1

    公开(公告)日：2005-07-28

    申请号：US10507076

    申请日：2003-07-14

    Applicant: Kenichiro Shinoi ,  Hiroaki Sudo

    Inventor： Kenichiro Shinoi ,  Hiroaki Sudo

    IPC: H04B1/707 ,  H04B1/711 ,  H04B7/26 ,  H04L25/03 ,  H04L27/00 ,  H04W28/18 ,  H04W88/02 ,  H04B1/00

    CPC classification number: H04B1/7097 ,  H04B1/7105 ,  H04B1/7115 ,  H04L27/0008 ,  H04L2025/03547

    Abstract: A wireless communication apparatus and a receiving scheme selection method are provided for improved overall system throughput. SIR measurer (106) measures the SIR of a known signal. Doppler frequency detector (108) detects the Doppler frequency from the received signal and measures the Doppler shift amount. The Doppler shift amount serves as an indicator of the moving speed of the mobile station apparatus. Interference power measurer (110) measures interference power from other cells. Known signal obtainer (104), SIR measurer (106), Doppler frequency detector (108), and interference power measurer (110) constitute a propagation environment estimator in this embodiment. Based on the SIR, Doppler shift amount, and interference power, receiving scheme selector (112) selects a receiving scheme of either RAKE reception or linear equalization.

    Abstract translation: 提供无线通信装置和接收方案选择方法以改善整体系统吞吐量。 SIR测量器（106）测量已知信号的SIR。 多普勒频率检测器（108）从接收到的信号中检测多普勒频率，并测量多普勒频移量。 多普勒频移量用作移动站装置的移动速度的指标。 干扰功率测量器（110）测量来自其他小区的干扰功率。 已知信号获取器（104），SIR测量器（106），多普勒频率检测器（108）和干扰功率测量器（110）构成了本实施例中的传播环境估计器。 接收方案选择器（112）基于SIR，多普勒频移量和干扰功率，选择RAKE接收或线性均衡的接收方案。

    Equalizer and method of setting initial value for same
    98.
    发明申请
    Equalizer and method of setting initial value for same 失效
    均衡器和设定初始值的方法相同

    公开(公告)号：US20050129106A1

    公开(公告)日：2005-06-16

    申请号：US11007199

    申请日：2004-12-09

    Applicant: Shinya Shimobayashi ,  Mariko Matsumoto

    Inventor： Shinya Shimobayashi ,  Mariko Matsumoto

    IPC: H03K5/159 ,  H04B1/707 ,  H04B1/711 ,  H04B3/06 ,  H04B7/005 ,  H04L25/02 ,  H04L25/03

    CPC classification number: H04L25/03038 ,  H04L25/0226 ,  H04L2025/03477 ,  H04L2025/03605 ,  H04L2025/03656

    Abstract: An equalizer is provided which is capable of making a filter factor to be set in the equalizer having an equalizing filter converge rapidly and a method is provided for setting an initial value for the rapid convergence of the filter factor. In the equalizer having a filter factor computing device to compute a filter factor for an equalizing filter, and a differential detecting circuit to generate a differential signal between a signal output from the equalizing filter and a common pilot diffusing code, an initial value for the filter factor computing device is generated and set by a multipath timing detecting circuit, a reverse diffusing section, and a channel estimating device being operated based on a received signal.

    Abstract translation: 提供一种均衡器，其能够使均衡器中具有均衡滤波器的滤波器因子快速收敛，并且提供了用于设置用于滤波器因子的快速收敛的初始值的方法。 在具有用于计算均衡滤波器的滤波器因子的滤波器因子计算装置的均衡器和用于在从均衡滤波器输出的信号和公共导频扩散码之间生成差分信号的差分检测电路的过滤器的初始值 因子计算装置由多径定时检测电路，反向扩散部分和基于接收信号进行操作的信道估计装置产生和设置。

    Diversity receiver
    99.
    发明申请
    Diversity receiver 失效
    分集接收机

    公开(公告)号：US20050059431A1

    公开(公告)日：2005-03-17

    申请号：US10729372

    申请日：2003-12-08

    Applicant: Masaki Matsui ,  Muneki Ito ,  Akio Horibe ,  Shigeo Sato

    Inventor： Masaki Matsui ,  Muneki Ito ,  Akio Horibe ,  Shigeo Sato

    IPC: H04B1/707 ,  H04B1/711 ,  H04B7/08 ,  H04Q7/20

    CPC classification number: H04B7/0814

    Abstract: It is an object of the present invention to improve the diversity gain by conducting linear prediction of fading fluctuations and switching antennas. In order to attain this object, the diversity receiver in accordance with the present invention comprises a plurality of antennas for receiving wireless signals subjected to direct spread modulation, an antenna switch for conducting antenna connection switching thereof, a primary demodulator for demodulating the wireless signals and obtaining a spread spectrum signal, a matched filter for finding a correlation value of the spread spectrum signal and a spread code for demodulation, a mean value computation unit for finding a mean SNR of the received signal by converting the maximum correlation value to a value per 1 frame, an estimation unit for linear prediction of the SNR of the received signal based on the time series data of the mean SNR, and a level comparator for comparing the SNR of the received signal that was predicted by the estimation unit with a threshold value and outputting a control signal for conducting antenna switching to the antenna switch.

    Abstract translation: 本发明的目的是通过对衰落波动和开关天线进行线性预测来提高分集增益。 为了达到上述目的，根据本发明的分集接收机包括用于接收经过直接扩展调制的无线信号的多个天线，用于进行天线连接切换的天线开关，用于解调无线信号的主解调器和 获得扩频信号，用于求解扩频信号的相关值和用于解调的扩展码的匹配滤波器，用于通过将最大相关值转换为每个值的平均值计算单元来求出接收信号的平均SNR 1帧，用于基于平均SNR的时间序列数据线性预测接收信号的SNR的估计单元和用于将由估计单元预测的接收信号的SNR与阈值进行比较的电平比较器 并向天线开关输出用于进行天线切换的控制信号。

    Wireless code division multiple access communications system with channel estimation using fingers with sub-chip spacing
    100.
    发明授权
    Wireless code division multiple access communications system with channel estimation using fingers with sub-chip spacing 有权
    无线码分多址通信系统，带有子码片间距的手指信道估计

    公开(公告)号：US06856610B2

    公开(公告)日：2005-02-15

    申请号：US09792111

    申请日：2001-02-23

    Applicant: Timothy M. Schmidl ,  Srinath Hosur ,  Anand G. Dabak

    Inventor： Timothy M. Schmidl ,  Srinath Hosur ,  Anand G. Dabak

    IPC: H04B1/711 ,  H04B1/7117 ,  H04B7/216

    CPC classification number: H04B1/711 ,  H04B1/7117

    Abstract: A wireless communication network (10). The network comprises a wireless receiver (14). The receiver comprises at least one antenna (AT14) for receiving a plurality of frames in a form of a plurality of paths. Each of the plurality of frames is modulated by a plurality of chips, and chip in the plurality of chips has a like chip duration. The receiver further comprises a plurality of path resources (F1, F2), and this plurality of path resources comprises a first path resource (F1) configured to receive a first plurality of symbols from a first path in the plurality of paths and a second path resource (F2) configured to receive a second plurality of symbols from a second path in the plurality of paths. The plurality of path resources also comprises circuitry for sampling the second path at a time less than the chip duration from a time when the circuitry for sampling samples the first path. Still further, the plurality of path resources comprise circuitry (442, 461), responsive to the circuitry for sampling, for establishing a first channel estimate for the first path in response to the first path and the second path. Lastly, the plurality of path resources comprises circuitry (441, 462), responsive to the circuitry for sampling, for establishing a second channel estimate for the second path in response to the first path and the second path.

    Abstract translation: 无线通信网络（10）。 该网络包括无线接收器（14）。 接收机包括用于接收多个路径形式的多个帧的至少一个天线（AT14）。 多个帧中的每一个由多个码片调制，并且多个码片中的码片具有相似的码片持续时间。 所述接收机还包括多个路径资源（F1，F2），并且所述多个路径资源包括被配置为从所述多个路径中的第一路径接收第一多个符号的第一路径资源（F1）和第二路径 资源（F2），被配置为从所述多个路径中的第二路径接收第二多个符号。 多个路径资源还包括用于在从用于采样的电路采样第一路径的时间起的时间小于芯片持续时间的时间对第二路径进行采样的电路。 此外，多个路径资源包括响应于用于采样的电路的电路（442,461），用于响应于第一路径和第二路径建立用于第一路径的第一信道估计。 最后，多个路径资源包括响应于用于采样的电路的响应于第一路径和第二路径建立第二路径的第二信道估计的电路（441,462）。

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