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公开(公告)号:US07675968B2
公开(公告)日:2010-03-09
申请号:US10954137
申请日:2004-09-28
申请人: Hiroshi Takatori , Chien-Hsin Lee
发明人: Hiroshi Takatori , Chien-Hsin Lee
IPC分类号: H03H7/30
CPC分类号: H03H17/0607 , H03H17/0227 , H03H17/06 , H03H21/0012 , H03H21/0067 , H03H2017/0297 , H03H2218/025 , H04L25/03057 , H04L25/03885 , H04L25/4921
摘要: Finite impulse response filters are commonly used in high speed data communications electronics for reducing error rates in multilevel symbol encoding schemes. Schemes such as pulse amplitude modulation and quadrature amplitude modulation may have higher error rates for symbols with low signal to noise ratios. By selectively updating the tap coefficients of the filter based on the symbols received, a more robust, accurate filter can be built.
摘要翻译: 有限脉冲响应滤波器通常用于高速数据通信电子设备中,用于降低多电平符号编码方案中的误码率。 诸如脉冲幅度调制和正交幅度调制的方案对于具有低信噪比的符号可能具有较高的误码率。 通过基于所接收的符号选择性地更新滤波器的抽头系数,可以构建更鲁棒,精确的滤波器。
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公开(公告)号:US07515073B2
公开(公告)日:2009-04-07
申请号:US11840893
申请日:2007-08-17
申请人: Thorsten Tracht , Guenther Hackl
发明人: Thorsten Tracht , Guenther Hackl
IPC分类号: H03M7/00
CPC分类号: H03H17/028 , H03H17/0275 , H03H2218/025
摘要: Embodiments of an apparatus for sample rate conversion are described. Various embodiments include an interpolator configured to interpolate a digital input data stream by using values of an interpolation phase shift control quantity to generate a digital output data stream, a computing stage configured to compute values of the interpolation phase shift control quantity, and an enabling/disabling stage configured to selectively disable the interpolator while keeping the computing stage enabled.
摘要翻译: 对采样率转换装置的实施例进行说明。 各种实施例包括内插器,其被配置为通过使用内插相移控制量的值内插数字输入数据流以生成数字输出数据流;计算级,被配置为计算内插相移控制量的值,以及使能/ 禁用级配置为在保持计算级使能的同时选择性地禁用内插器。
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公开(公告)号:US20090045992A1
公开(公告)日:2009-02-19
申请号:US11840893
申请日:2007-08-17
申请人: Thorsten Tracht , Guenther Hackl
发明人: Thorsten Tracht , Guenther Hackl
IPC分类号: H03M7/00
CPC分类号: H03H17/028 , H03H17/0275 , H03H2218/025
摘要: Embodiments of an apparatus for sample rate conversion are described. Various embodiments include an interpolator configured to interpolate a digital input data stream by using values of an interpolation phase shift control quantity to generate a digital output data stream, a computing stage configured to compute values of the interpolation phase shift control quantity, and an enabling/disabling stage configured to selectively disable the interpolator while keeping the computing stage enabled.
摘要翻译: 对采样率转换装置的实施例进行说明。 各种实施例包括内插器,其被配置为通过使用内插相移控制量的值内插数字输入数据流以生成数字输出数据流;计算级,被配置为计算内插相移控制量的值,以及使能/ 禁用级配置为在保持计算级使能的同时选择性地禁用内插器。
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公开(公告)号:US20050094723A1
公开(公告)日:2005-05-05
申请号:US10954137
申请日:2004-09-28
申请人: Hiroshi Takatori
发明人: Hiroshi Takatori
IPC分类号: G06F20060101 , H03K5/159
CPC分类号: H03H17/0607 , H03H17/0227 , H03H17/06 , H03H21/0012 , H03H21/0067 , H03H2017/0297 , H03H2218/025 , H04L25/03057 , H04L25/03885 , H04L25/4921
摘要: Finite impulse response filters are commonly used in high speed data communications electronics for reducing error rates in multilevel symbol encoding schemes. Schemes such as pulse amplitude modulation and quadrature amplitude modulation may have higher error rates for symbols with low signal to noise ratios. By selectively updating the tap coefficients of the filter based on the symbols received, a more robust, accurate filter can be built.
摘要翻译: 有限脉冲响应滤波器通常用于高速数据通信电子设备中,用于降低多电平符号编码方案中的误码率。 诸如脉冲幅度调制和正交幅度调制的方案对于具有低信噪比的符号可能具有较高的误码率。 通过基于所接收的符号选择性地更新滤波器的抽头系数,可以构建更鲁棒,精确的滤波器。
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