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    INTERFERENCE CANCELLATION WITH IMPROVED ESTIMATION AND TRACKING FOR WIRELESS COMMUNICATION
    6.
    发明申请
    INTERFERENCE CANCELLATION WITH IMPROVED ESTIMATION AND TRACKING FOR WIRELESS COMMUNICATION 有权
    干扰消除与改进无线通信的估计和跟踪

    公开(公告)号：US20070127558A1

    公开(公告)日：2007-06-07

    申请号：US11535848

    申请日：2006-09-27

    Applicant: Brian Banister

    Inventor： Brian Banister

    IPC: H04B1/00 ,  H03D1/04

    CPC classification number: H04B1/7107

    Abstract: Techniques for performing interference cancellation in a wireless (e.g., CDMA) communication system are described. In one aspect, per-bin power estimates for multiple orthogonal bins are derived by estimating at least two components of these power estimates. The components may include, e.g., channel gain, noise and interference, and bin gain. Interference cancellation is performed based on the per-bin power estimates. In another aspect, interference cancellation is performed in multiple stages with fast tracking. A total power estimate and per-bin power estimates are derived for a first stage. A total power estimate is derived for a second stage. Per-bin power estimates are also derived for the second stage based on the total power estimates for the first and second stages and the per-bin power estimates for the first stage. Interference cancellation is performed for each stage based on the per-bin power estimates for that stage.

    Abstract translation: 描述了在无线（例如CDMA）通信系统中执行干扰消除的技术。 在一个方面，通过估计这些功率估计的至少两个分量来导出多个正交区块的每箱功率估计。 这些组件可以包括例如信道增益，噪声和干扰以及信道增益。 基于每箱功率估计执行干扰消除。 在另一方面，通过快速跟踪在多个阶段执行干扰消除。 第一阶段得出总功率估计和每箱功率估计。 导出第二阶段的总功率估计。 基于第一阶段和第二阶段的总功率估计以及第一阶段的每个二进制数功率估计，也为第二阶段导出每斌功率估计。 基于该阶段的每箱功率估计，针对每个阶段执行干扰消除。

    Quasi-linear interference cancellation for wireless communication
    7.
    发明申请
    Quasi-linear interference cancellation for wireless communication 有权
    无线通信准线性干扰消除

    公开(公告)号：US20070116099A1

    公开(公告)日：2007-05-24

    申请号：US11285510

    申请日：2005-11-21

    Applicant: Brian Banister

    Inventor： Brian Banister

    IPC: H04B1/00

    CPC classification number: H04B1/71075 ,  H04B1/712 ,  H04B2001/70935

    Abstract: Techniques for performing interference cancellation in a wireless (e.g., CDMA) communication system are described. For a single-sector interference canceller, received samples are processed (e.g., despread) to isolate a signal from a transmitter (e.g., a base station) and obtain input samples. The input samples are transformed based on a first transform (e.g., a fast Hadamard transform) to obtain received symbols for multiple orthogonal channels (e.g., Walsh bins). The received symbols for the multiple orthogonal channels are scaled with multiple gains to obtain scaled symbols. The gains may be related to the inverses of the power estimates for the orthogonal channels. The scaled symbols are transformed based on a second transform (e.g., an inverse fast Hadamard transform) to obtain output samples, which are processed (e.g., spread) to obtain interference-canceled samples having the signal from the transmitter suppressed.

    Abstract translation: 描述了在无线（例如CDMA）通信系统中执行干扰消除的技术。 对于单扇区干扰消除器，接收的样本被处理（例如，去扩展）以隔离来自发射机（例如，基站）的信号并获得输入采样。 基于第一变换（例如，快速Hadamard变换）来变换输入样本，以获得用于多个正交信道（例如沃尔什bin）的接收符号。 多个正交信道的接收符号用多个增益进行缩放以获得缩放的符号。 增益可能与正交信道的功率估计的逆相关。 基于第二变换（例如，逆快速哈达马变换）来对经缩放的符号进行变换，以获得处理（例如，扩展）的输出采样，以获得具有来自发送器的信号被抑制的干扰消除样本。

    Metric biasing for maximum likelihood sequence estimators
    8.
    发明授权
    Metric biasing for maximum likelihood sequence estimators 有权
    最大似然序列估计量的度量偏置

    公开(公告)号：US06452984B1

    公开(公告)日：2002-09-17

    申请号：US09258032

    申请日：1999-02-25

    Applicant: Brian Banister ,  Roland R. Rick

    Inventor： Brian Banister ,  Roland R. Rick

    IPC: H03M1339

    CPC classification number: H03M13/39

    Abstract: A decoder for decoding convolutionally encoded precoding data is described. The precoding sequence consists of two subsequences t and b; the value of t corresponds to a convolutional encoder state at a particular time. The a priori probability Pr(ti) that the subsequence t has a particular value ti is generated. In the preferred embodiment, the metric function that is applied to a test sequence including ti is then biased by adding (&sgr;2/&agr;2) ln(Pr(ti)), where &agr;2 is the signal average energy per symbol of the transmitted data, &sgr;2 is the variance of the noise added by a channel through which the data is transmitted. The resulting metric is then used by an MLSE decoder such as a Viterbi decoder to decode the received data.

    Abstract translation: 描述了用于对卷积编码的预编码数据进行解码的解码器。 预编码序列由两个子序列t和b组成; t的值对应于特定时间的卷积编码器状态。 产生子序列t具有特定值ti的先验概率Pr（ti）。 在优选实施例中，施加到包括ti的测试序列的度量函数然后通过加上（sigma2 /α2）ln（Pr（ti））而被偏置，其中α2是发送数据的每符号的信号平均能量，σ2 是通过数据传输的通道所添加的噪声的方差。 所得到的度量然后被诸如维特比解码器之类的MLSE解码器用于解码所接收的数据。

    TECHNIQUES FOR CONTROLLING OPERATION OF CONTROL LOOPS IN A RECEIVER
    10.
    发明申请
    TECHNIQUES FOR CONTROLLING OPERATION OF CONTROL LOOPS IN A RECEIVER 有权
    用于控制接收器中控制杆操作的技术

    公开(公告)号：US20080039042A1

    公开(公告)日：2008-02-14

    申请号：US11560802

    申请日：2006-11-16

    Applicant: Steven Ciccarelli ,  Brian Banister ,  Brian George ,  Soon-Seng Lau ,  Prasad Gudem ,  Arun Raghupathy

    Inventor： Steven Ciccarelli ,  Brian Banister ,  Brian George ,  Soon-Seng Lau ,  Prasad Gudem ,  Arun Raghupathy

    IPC: H04B7/00

    CPC classification number: H04B1/109

    Abstract: Techniques for controlling operation of control loops in a receiver are described. The operation of at least one control loop is modified in conjunction with a change in operating state, which may correspond to a change in linearity state, gain state, operating frequency, antenna configuration, etc. A change in linearity state may occur when jammers are detected and may cause bias current of analog circuit blocks to be adjusted. The at least one control loop to be modified may include a DC loop, an AGC loop, etc. The operation of a control loop may be modified by disabling the control loop or changing its time constant prior to changing operating state, waiting a predetermined amount of time to allow the receiver to settle, and enabling the control loop or restoring its time constant after waiting the predetermined amount of time.

    Abstract translation: 描述了用于控制接收机中的控制环路的操作的技术。 结合操作状态的改变来修改至少一个控制回路的操作，其可以对应于线性状态，增益状态，操作频率，天线配置等的改变。线性状态的变化可能发生在干扰器 并且可能导致模拟电路块的偏置电流被调整。 要修改的至少一个控制环路可以包括DC环路，AGC环路等。可以通过在改变操作状态之前禁用控制环路或改变其时间常数来修改控制环路的操作，等待预定量 的时间以允许接收机安定，并且在等待预定时间量之后启用控制环路或恢复其时间常数。

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