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    TIME TRACKING IN A NON-NEGLIGIBLE MULTIPATH SPACING ENVIRONMENT
    3.
    发明专利
    TIME TRACKING IN A NON-NEGLIGIBLE MULTIPATH SPACING ENVIRONMENT 未知

    公开(公告)号：CA2434116C

    公开(公告)日：2010-03-16

    申请号：CA2434116

    申请日：2002-01-11

    Applicant: QUALCOMM INC

    Inventor： RICK ROLAND REINHARD ,  SUBRAHMANYA PARVATHANATHAN ,  BUTLER BRIAN ,  PATEL SHIMMAN ,  EKVETCHAVAT THUNYACHATE

    IPC: H04B7/06 ,  H04B7/08

    Abstract: In an antenna diverstiy environment, the timing offset of the receiver's fingers are based on the timing offset of the received peaks of the base station transmit signals. In a system with non-neglible multipath spacing, the timing offset of the received peaks of the base station transmit signals are not necessarily at the same location. In one embodiment, the demodulating elements for the signal from each base station antenna use the same offset for demodulating and determining an error signal based on pilot signal sampling prior to the timing offset and subsequent to the timing offset. The error signals are averaged and used by a time trackin loop to track the incoming signal. In another embodiment, the demodulating elements for the signal from each base station antenna independently time track the signals with different times offsets for each finger. The preferred embodiment depends on the method used by the base station to multiplex the data onto multiple transmit antennas.

    4.
    发明专利
    未知

    公开(公告)号：AT500662T

    公开(公告)日：2011-03-15

    申请号：AT08006410

    申请日：2008-03-31

    Applicant: QUALCOMM INC

    Inventor： HURT JAMES YOUNG ,  CHANDRASEKHAR PREETHI ,  RICK ROLAND REINHARD

    IPC: H04L1/00

    Abstract: A receiver is configured to determine a scaling factor and a carrier-to-interference cap for a communication signal based on the modulation format used or a measured carrier-to-interference ratio. The carrier-to-interference cap sets the limit for clipping of the signal to interference-plus-noise ratio of the communication signal.

    SUPRESION DE INTERFERENCIA CON ANTENAS VIRTUALES.
    5.
    发明专利
    SUPRESION DE INTERFERENCIA CON ANTENAS VIRTUALES. 未知

    公开(公告)号：MX2007006025A

    公开(公告)日：2007-07-20

    申请号：MX2007006025

    申请日：2005-11-17

    Applicant: QUALCOMM INC

    Inventor： CHALLA RAGHU ,  RICK ROLAND REINHARD

    IPC: H04L25/00

    Abstract: Un receptor suprime la interferencia de co-canal (CCI) de otros transmisores e interferencia inter-simbolo (ISI) debido a la distorsion del canal utilizando antenas "virtuales", las antenas virtuales se pueden formar mediante (1) sobremuestreando una senal recibida para cada antena real en el receptor y/o (2) descomponiendo una secuencia de muestras con valor complejo en una secuencia de muestras en-fase y una secuencia de muestras en cuadratura; en un diseno, el receptor incluye un pre-procesador, un supresor de interferencia, y un ecualizador; el pre-procesador procesa las muestras recibidas por lo menos para una antena real y general por lo menos dos secuencias de muestras de entrada para cada antena real; el supresor de interferencia suprime la interferencia de co-canal en las secuencias de muestras de entrada y provee por lo menos una secuencia de muestras con CCI suprimida; el ecualizador ejecuta la deteccion en la(s) secuencia(s) de muestra con CCI suprimida y provee los bits detectados; el supresor de interferencia y el ecualizador pueden ser operados para una o multiples iteracciones.

    METHOD AND DEVICE FOR REDUCING CROSS-CORRELATION FALSE ALARMS IN CDMA AND OTHER WIRELESS NETWORKS
    7.
    发明申请
    METHOD AND DEVICE FOR REDUCING CROSS-CORRELATION FALSE ALARMS IN CDMA AND OTHER WIRELESS NETWORKS 审中-公开
    用于减少CDMA和其他无线网络中的互相关错误报警的方法和设备

    公开(公告)号：WO2007065138A3

    公开(公告)日：2007-11-01

    申请号：PCT/US2006061439

    申请日：2006-11-30

    Applicant: QUALCOMM INC ,  SEIBERT CRISTINA ,  WENGLER MICHAEL JAMES ,  RICK ROLAND REINHARD

    Inventor： SEIBERT CRISTINA ,  WENGLER MICHAEL JAMES ,  RICK ROLAND REINHARD

    CPC classification number: H04B1/7077

    Abstract: A method and device for combating cross-correlation false alarms by introducing code diversity in the correlation process in which the search code may be diversified by the use of code staggering and/or code scrambling. The energy levels of the signals before and after the search code have been diversified may be evaluated to detect a false alarm. In addition, a set of parameterized analytical models may be used to estimate the rate of false alarms from cross-correlation in wireless networks in order to guide development and design of wireless transceivers.

    Abstract translation: 一种通过在相关过程中引入代码分集来对抗互相关假错误的方法和装置，在所述相关过程中，可以通过使用代码交错和/或码扰乱来使搜索代码多样化。 可以评估搜索代码之前和之后的信号的能量水平，以检测虚警。 另外，为了指导无线收发器的开发和设计，可以使用一组参数化的分析模型来估计来自无线网络中的互相关的误报率。

    INTERFERENCE SUPPRESSION WITH VIRTURAL ANTENNAS
    8.
    发明申请
    INTERFERENCE SUPPRESSION WITH VIRTURAL ANTENNAS 审中-公开
    干扰抑制与虚拟天线

    公开(公告)号：WO2006055797A3

    公开(公告)日：2006-10-19

    申请号：PCT/US2005041856

    申请日：2005-11-17

    Applicant: QUALCOMM INC ,  CHALLA RAGHU ,  RICK ROLAND REINHARD

    Inventor： CHALLA RAGHU ,  RICK ROLAND REINHARD

    IPC: H04L25/03

    CPC classification number: H04L25/03006 ,  H04L25/0328

    Abstract: A receiver suppresses co-channel interference (CCI) from other transmitters and intersymbol interference (ISI) due to channel distortion using "virtual" antennas. The virtual antennas may be formed by (1) oversampling a received signal for each actual antenna at the receiver and/or (1) decomposing a sequence of complex-valued samples into a sequence of inphase samples and a sequence of quadrature samples. In one design, the receiver includes a pre-processor, an interference suppressor, and an equalizer. The pre-processor processes received samples for at least one actual antenna and generates at least two sequences of input samples for each actual antenna. The interference suppressor suppresses co-channel interference in the input sample sequences and provides at least one sequence of CCI-suppressed samples. The equalizer performs detection on the CCI-suppressed sample sequence(s) and provides detected bits. The interference suppressor and equalizer may be operated for one or multiple iterations.

    Abstract translation: 接收机使用“虚拟”天线抑制来自其他发射机的同信道干扰（CCI）和由于信道失真引起的符号间干扰（ISI）。 虚拟天线可以通过以下方式形成：（1）在接收机处对每个实际天线的接收信号进行过采样，和/或（1）将复数值采样序列分解为同相采样序列和正交采样序列。 在一种设计中，接收器包括预处理器，干扰抑制器和均衡器。 预处理器处理至少一个实际天线的接收样本，并为每个实际天线生成至少两个输入样本序列。 干扰抑制器抑制输入采样序列中的同信道干扰并提供至少一个CCI抑制采样序列。 均衡器对CCI抑制的采样序列执行检测并提供检测到的比特。 干扰抑制器和均衡器可以运行一次或多次迭代。

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