Optimal factoring of FIR filters
    1.
    发明授权
    Optimal factoring of FIR filters 有权
    FIR滤波器的最优分解

    公开(公告)号:US09391591B2

    公开(公告)日:2016-07-12

    申请号:US14626292

    申请日:2015-02-19

    CPC classification number: H03H17/0219 H03H17/06 H03H2017/0081 H03H2220/02

    Abstract: A method and system for the design and implementation of an optimally factored filter is presented. Pairs of angle values are organized in pairing candidates and a threshold is defined to indicate an upper bound on the number of pairing candidates. A first pairing candidate is exchanged above the threshold with a second pairing candidate below the threshold and a matrix is generated based on the pairing candidates below the threshold. A lowest predicted total quantization cost between all pairing candidates represented within the matrix is determined and the pairing candidates that result in the lowest predicted total quantization cost are used to determine the coefficients of the filter.

    Abstract translation: 提出了一种用于设计和实现最优因子滤波器的方法和系统。 一对角度值被组织在配对候选中,并且定义阈值以指示配对候选人的数量的上限。 第一配对候选在阈值之上交换,第二配对候选低于阈值,并且基于低于阈值的配对候选来生成矩阵。 确定在矩阵内表示的所有配对候选之间的最低预测总量化成本,并且使用导致最低预测总量化成本的配对候选来确定滤波器的系数。

    Optimally factored interpolated FIR filter design
    2.
    发明授权
    Optimally factored interpolated FIR filter design 有权
    最佳因子内插FIR滤波器设计

    公开(公告)号:US09374067B2

    公开(公告)日:2016-06-21

    申请号:US14641234

    申请日:2015-03-06

    CPC classification number: H03H17/0248 H03H17/06

    Abstract: A method and system for the design and implementation of an optimally factored interpolated finite impulse response (IFIR) filter is presented. Techniques used to increase the implementation efficiency of the filter include joint sequencing of the filter stages, use of an nested IFIR filter, taming of a stage by relocation of that stage, fusing two or more stages together to form a single stage, and manual manipulation of a post-stage multiplier. IFIR filters using this approach may be realized as low pass filters or high pass filters, and in either analog or digital form.

    Abstract translation: 提出了一种用于设计和实现最优因子插值有限脉冲响应(IFIR)滤波器的方法和系统。 用于提高滤波器的实现效率的技术包括滤波器阶段的联合排序,使用嵌套IFIR滤波器,通过重新定位该阶段来驯化阶段,将两个或多个阶段融合在一起以形成单个阶段,以及手动操作 的后期乘数。 使用这种方法的IFIR滤波器可以实现为低通滤波器或高通滤波器,并且以模拟或数字形式实现。

    Optimal factoring of FIR filters
    3.
    发明授权

    公开(公告)号:US09787288B2

    公开(公告)日:2017-10-10

    申请号:US15206642

    申请日:2016-07-11

    CPC classification number: H03H17/0219 H03H17/06 H03H2017/0081 H03H2220/02

    Abstract: A method and system for the design and implementation of an optimally factored filter is presented. Pairs of angle values are organized in pairing candidates and a threshold is defined to indicate an upper bound on the number of pairing candidates. A first pairing candidate is exchanged above the threshold with a second pairing candidate below the threshold and a matrix is generated based on the pairing candidates below the threshold. A lowest predicted total quantization cost between all pairing candidates represented within the matrix is determined and the pairing candidates that result in the lowest predicted total quantization cost are used to determine the coefficients of the filter.

    Excess-fours processing in direct digital synthesizer implementations
    4.
    发明授权
    Excess-fours processing in direct digital synthesizer implementations 有权
    直接数字合成器实现中的四分之一处理

    公开(公告)号:US09547327B2

    公开(公告)日:2017-01-17

    申请号:US15006088

    申请日:2016-01-25

    Abstract: Systems and methods for a split phase accumulator having a plurality of sub phase accumulators are provided. Each sub phase accumulator receives a portion of a frequency control word. The first sub phase accumulator includes a first register and the remaining sub phase accumulators include a register and an overflow register. At each discrete point in time, the first sub phase accumulator is configured to be responsive to the first portion of the frequency control word at that discrete point in time and to the first sub phase accumulator value at the immediately previous discrete point in time, and each of the remaining sub phase accumulators is configured to be responsive to a value of its corresponding portion of the frequency control word at that discrete point in time and to the same second sub phase accumulator value at the immediately previous discrete point in time.

    Abstract translation: 提供了具有多个子相位累加器的分相相位累加器的系统和方法。 每个子相位累加器接收频率控制字的一部分。 第一子相位累加器包括第一寄存器,其余子相位累加器包括寄存器和溢出寄存器。 在每个离散时间点,第一子相位累加器被配置为响应于该离散时间点处的频率控制字的第一部分以及在紧接的先前离散时间点处的第一子相位累加器值,以及 每个剩余的子相位累加器被配置为响应于在该离散时间点处的频率控制字的对应部分的值以及在紧接的先前离散时间点处的相同的第二子相位累加器值。

    Optimal factoring of FIR filters
    5.
    发明授权

    公开(公告)号:US09705476B2

    公开(公告)日:2017-07-11

    申请号:US15206651

    申请日:2016-07-11

    CPC classification number: H03H17/0219 H03H17/06 H03H2017/0081 H03H2220/02

    Abstract: A method and system for the design and implementation of an optimally factored filter is presented. Pairs of angle values are organized in pairing candidates and a threshold is defined to indicate an upper bound on the number of pairing candidates. A first pairing candidate is exchanged above the threshold with a second pairing candidate below the threshold and a matrix is generated based on the pairing candidates below the threshold. A lowest predicted total quantization cost between all pairing candidates represented within the matrix is determined and the pairing candidates that result in the lowest predicted total quantization cost are used to determine the coefficients of the filter.

Patent Agency Ranking