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    • 12. 发明授权
    • Peak windowing for crest factor reduction
    • 峰值窗口降低波峰因数
    • US07586995B1
    • 2009-09-08
    • US11109536
    • 2005-04-18
    • Volker MauerKulwinder DhanoaPaul Metzgen
    • Volker MauerKulwinder DhanoaPaul Metzgen
    • H04L25/49
    • H04L27/3411
    • In order to reduce the crest factor of a signal for power amplification, a windowing function is applied. The windowing function that is applied is a triangular windowing function. The use of this function produces good results when those results are measured in terms of their effect on a transmitted signal in a WCDMA communications system. The filter for performing the triangular windowing function receives the signal, and applies it to a first delay element. The output from the first delay element is applied to a second delay element. An adder forms a weighted sum of the received signal and the signals at the outputs of the first delay element and the second delay element. A first accumulator is connected to receive an input from the adder and provides a first accumulator output, while a second accumulator is connected to receive an input from the first accumulator output and provides a second accumulator output.
    • 为了降低用于功率放大的信号的波峰因数,应用窗口功能。 应用的窗口功能是三角窗口功能。 当这些结果在其对WCDMA通信系统中的发射信号的影响方面测量时,使用该功能产生良好的结果。 用于执行三角窗函数的滤波器接收信号,并将其施加到第一延迟元件。 来自第一延迟元件的输出被施加到第二延迟元件。 加法器形成接收信号和第一延迟元件和第二延迟元件的输出处的信号的加权和。 连接第一累加器以从加法器接收输入并提供第一累加器输出,而第二累加器被连接以接收来自第一累加器输出的输入并提供第二累加器输出。
    • 13. 发明授权
    • Method and apparatus for extracting data from an oversampled bit stream
    • 用于从过采样比特流中提取数据的方法和装置
    • US06944577B1
    • 2005-09-13
    • US10728228
    • 2003-12-03
    • Volker MauerJames Tyson
    • Volker MauerJames Tyson
    • G06F15/00
    • H04L7/0338H04L7/007
    • Apparatus and method extract data from a data stream. The method includes oversampling the data stream, performing first processing on adjacent bits of the oversampled data stream, performing second processing the results of the first processing, comparing the results of the second processing, and selecting an alignment of data based on the comparison. The method can be efficiently implemented using accumulators, delay elements, and XOR elements. In this manner, data may be extracted from the data stream despite a varying or unknown phase or duty cycle, or in the presence of jitter.
    • 设备和方法从数据流中提取数据。 该方法包括对数据流进行过采样,对过采样数据流的相邻位执行第一处理,对第一处理的结果进行第二处理,比较第二处理的结果,以及基于比较选择数据的对齐。 可以使用累加器,延迟元件和XOR元件来有效地实现该方法。 以这种方式,尽管变化或未知的相位或占空比,或者在存在抖动的情况下,也可以从数据流中提取数据。
    • 15. 发明授权
    • Configuring a CIC filter in a programmable integrated circuit device
    • 在可编程集成电路设备中配置CIC滤波器
    • US08583715B1
    • 2013-11-12
    • US11934149
    • 2007-11-02
    • Zhengjun PanVolker Mauer
    • Zhengjun PanVolker Mauer
    • G06F17/10
    • H03H17/0671H03H2017/0297H03K19/17728
    • A programmable integrated circuit device can be configured as a cascaded integrator-comb (CIC) filter. In order to take advantage of Hogenauer pruning to configure the CIC filter efficiently, a software tool for configuring the device can be provided in which the Fj terms for Hogenauer pruning have been calculated in advance for all possible user parameters supported by the tool. To configure a CIC filter, the user enters the parameters in the tool, which then looks up the Fj terms corresponding to those parameters and completes the calculation of the Bj terms for Hogenauer pruning. Because the calculation of the Fj terms is the most time-consuming step in calculating of the Bj terms, pre-calculation of the Fj terms, which can be done just once by the provider of the tool, allows end users to calculate the Bj terms in reasonable periods of time, making Hogenauer pruning available to end users.
    • 可编程集成电路器件可以被配置为级联积分梳(CIC)滤波器。 为了利用Hogenauer修剪来有效地配置CIC过滤器,可以提供用于配置设备的软件工具,其中Hogenauer修剪的Fj项已经被预先计算出用于该工具支持的所有可能的用户参数。 要配置CIC过滤器,用户在工具中输入参数,然后查找与这些参数对应的Fj项,并完成Hogenauer修剪的Bj项的计算。 因为Fj项的计算是计算Bj项最耗时的步骤,所以可以由工具提供者仅仅完成一次的Fj项的预计算,允许最终用户计算Bj项 在合理的时间内,使Hogenauer修剪可用于最终用户。
    • 20. 发明授权
    • Specialized processing block for programmable integrated circuit device
    • 可编程集成电路器件专用处理块
    • US08543634B1
    • 2013-09-24
    • US13435133
    • 2012-03-30
    • Lei XuVolker MauerSteven Perry
    • Lei XuVolker MauerSteven Perry
    • G06F15/00
    • G06F7/552G06F2207/5523
    • A specialized processing block such as a DSP block may be enhanced by including direct connections that allow the block output to be directly connected to either the multiplier inputs or the adder inputs of another such block. A programmable integrated circuit device may includes a plurality of such specialized processing blocks. The specialized processing block includes a multiplier having two multiplicand inputs and a product output, an adder having as one adder input the product output of the multiplier, and having a second adder input and an adder output, a direct-connect output of the adder output to a first other one of the specialized processing block, and a direct-connect input from a second other one of the specialized processing block. The direct-connect input connects a direct-connect output of that second other one of the specialized processing block to a first one of the multiplicand inputs.
    • 可以通过包括允许块输出直接连接到另一个这样的块的乘法器输入或加法器输入的直接连接来增强诸如DSP块的专门处理块。 可编程集成电路设备可以包括多个这样的专用处理块。 专用处理块包括具有两个被乘数输入和乘积输出的乘法器,具有一个加法器的加法器输入乘法器的乘积输出,并具有第二加法器输入和加法器输出,加法器输出的直接连接输出 到专用处理块中的第一另一个,以及来自专门处理块中的另一个的直接连接输入。 直接连接输入将专用处理块中另外另一个的直接连接输出连接到被乘数输入中的第一个。