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    • 1. 发明授权
    • Variable gain control for high speed receivers
    • 高速接收机可变增益控制
    • US08306134B2
    • 2012-11-06
    • US12505413
    • 2009-07-17
    • Jon S. MartensHelen ChauDavid A. Rangel-GuzmanPeter A. KapetanicDan Levassuer
    • Jon S. MartensHelen ChauDavid A. Rangel-GuzmanPeter A. KapetanicDan Levassuer
    • H04K1/10G10L19/14G10L11/06
    • H03G3/3068
    • A high speed receiver is provided using two parallel processing paths to enable rapid variable gain control. The parallel processing paths include a first processing path using a high resolution Discrete Fourier Transform (DFT), and a second processing path using a reduced DFT requiring fewer samples than the high resolution DFT. An initial sample of the data is processed using the second processing path with the reduced DFT by comparing a Fourier transform of the initial sample with predetermined threshold values. As a result of the comparison of the Fourier transform of the initial sample with the predetermined threshold values, a gain determination block determines whether a requirement exists for gain ranging. If gain ranging is needed, the gain of the data signal is adjusted and the gain ranging process repeats.
    • 使用两个并行处理路径提供高速接收机,以实现快速可变增益控制。 并行处理路径包括使用高分辨率离散傅里叶变换(DFT)的第一处理路径,以及使用与高分辨率DFT相比需要较少样本的减少的DFT的第二处理路径。 通过将初始样本的傅立叶变换与预定阈值进行比较,使用具有减小的DFT的第二处理路径来处理数据的初始样本。 作为初始样本的傅里叶变换与预定阈值的比较的结果,增益确定块确定是否存在增益测距的要求。 如果需要增益测距,则调整数据信号的增益,并重复增益测距过程。
    • 2. 发明申请
    • VARIABLE GAIN CONTROL FOR HIGH SPEED RECEIVERS
    • 高速接收机的可变增益控制
    • US20110013733A1
    • 2011-01-20
    • US12505413
    • 2009-07-17
    • Jon S. MartensHelen ChauDavid A. Rangel-GuzmanPeter M. KapetanicDan Levasseur
    • Jon S. MartensHelen ChauDavid A. Rangel-GuzmanPeter M. KapetanicDan Levasseur
    • H04L27/08
    • H03G3/3068
    • A high speed receiver is provided using two parallel processing paths to enable rapid variable gain control. The parallel processing paths include a first processing path using a high resolution Discrete Fourier Transform (DFT), and a second processing path using a reduced DFT requiring fewer samples than the high resolution DFT. An initial sample of the data is processed using the second processing path with the reduced DFT by comparing a Fourier transform of the initial sample with predetermined threshold values. As a result of the comparison of the Fourier transform of the initial sample with the predetermined threshold values, a gain determination block determines whether a requirement exists for gain ranging. If gain ranging is needed, the gain of the data signal is adjusted and the gain ranging process repeats.
    • 使用两个并行处理路径提供高速接收机,以实现快速可变增益控制。 并行处理路径包括使用高分辨率离散傅里叶变换(DFT)的第一处理路径,以及使用与高分辨率DFT相比需要较少样本的减少的DFT的第二处理路径。 通过将初始样本的傅立叶变换与预定阈值进行比较,使用具有减小的DFT的第二处理路径来处理数据的初始样本。 作为初始样本的傅里叶变换与预定阈值的比较的结果,增益确定块确定是否存在增益测距的要求。 如果需要增益测距,则调整数据信号的增益,并重复增益测距过程。