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公开(公告)号：US08934526B2
公开(公告)日：2015-01-13
申请号：US12825034
申请日：2010-06-28
CPC分类号： H04L25/0307 , H04L25/0262 , H04L2025/03668 , H04L2025/03745
摘要： Methods and apparatus adapting equalizers for compensating for signal distortion of a received digital signal are disclosed. The method comprises deriving equalizer settings for a received signal, determining at least one signal parameter of said received signal; and storing the derived equalizer settings together with an indication of the signal parameter. The signal parameter could, for instance, comprise the data rate of the signal. If the signal parameter changes the equalizer is configured to use any stored settings which are appropriate for the new signal parameter. Thus, rather than start an entirely new equalizer adaptation routine every time the signal parameter changes the equalizer will use any stored settings which are appropriate for the changed parameter.
摘要翻译： 公开了用于补偿接收的数字信号的信号失真的适应均衡器的方法和装置。 该方法包括导出接收信号的均衡器设置，确定所述接收信号的至少一个信号参数; 并将导出的均衡器设置与信号参数的指示一起存储。 信号参数可以例如包括信号的数据速率。 如果信号参数改变，均衡器被配置为使用适合于新信号参数的任何存储设置。 因此，每当信号参数改变均衡器时，均不会启动全新的均衡器适配程序，因此均衡器将使用任何适合改变参数的存储设置。
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公开(公告)号：US08761325B2
公开(公告)日：2014-06-24
申请号：US12825016
申请日：2010-06-28
IPC分类号： H04L7/00
CPC分类号： H04L7/007 , H03L7/081 , H03L7/091 , H04L7/033 , H04L7/0334
摘要： A clock generator generates a clock signal used for sampling a received signal by a comparator which compares the received signal to a reference. A phase shifter adjusts the phase of the first clock signal and a controller adjusts the phase of the clock signal to maximize the vertical eye opening of the signal at the sampling time. In an example embodiment, the phase of the clock signal is adjusted in a first direction and a measure of vertical eye opening of the signal is compared to a previous measure. If the measure of vertical eye opening has increased the signal another phase adjustment is made in the same direction and if the vertical eye opening of the signal has decreased a further phase adjustment in the opposite direction is made. By increasing the vertical eye opening of the signal the signal-to-noise ratio of the received signal is improved.
摘要翻译： 时钟发生器产生用于通过将接收信号与参考进行比较的比较器对接收信号进行采样的时钟信号。 移相器调节第一时钟信号的相位，并且控制器调整时钟信号的相位，以使采样时间的信号的垂直亮度最大化。 在示例性实施例中，时钟信号的相位在第一方向上被调整，并且信号的垂直眼睛开度的测量与先前的测量进行比较。 如果垂直眼睛开度的测量增加了信号，则在相同方向上进行相位调整，并且如果信号的垂直眼睛开度减小，则进行相反方向的进一步的相位调整。 通过增加信号的垂直亮度，提高了接收信号的信噪比。
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公开(公告)号：US08559495B2
公开(公告)日：2013-10-15
申请号：US12825025
申请日：2010-06-28
IPC分类号： H03K5/159
CPC分类号： H04L25/0307 , H04L2025/03617
摘要： This invention relates to methods and apparatus for equalizer adaptation for compensating for channel distortion on received data signals. The method comprises, for each bit, forming an adjusted bit signal comprising a weighted contribution from at least one other bit period. The polarity of the adjusted bit signal is determined and the bit is categorized as a hard, i.e. high confidence, bit is the bit is above an upper threshold or below a lower threshold or otherwise is categorized as a soft bit. The weightings are adjusted based on the category of the bit wherein a first adjustment is made it the bit is categorized as a soft bit but a second, different adjustment is made if the bit is categorized as a hard bit. For a soft bit the weightings may be increased for bits which have the same polarity as the bit in question and decreased for bits of opposite polarity. For a hard bit the adjustment may increase the weighting for bits of opposite polarity and decrease the weighting for bits of the same polarity as the bit in question. The adjustments for the hard and soft bits may be weighted differently according to the proportion of soft to hard bits.
摘要翻译： 本发明涉及用于补偿接收到的数据信号上的信道失真的均衡器适配方法和装置。 对于每个比特，该方法包括从至少一个其他比特周期形成包括加权贡献的经调整的比特信号。 确定调整后的位信号的极性，并将该位分类为硬，即高置信度，该比特是高于上限阈值或低于较低阈值，否则将其归类为软比特。 基于比特的类别来调整权重，其中进行第一调整，其比特被分类为软比特，但是第二，如果比特被分类为硬比特，则进行不同的调整。 对于软位，对于与所讨论的位具有相同极性的位而对于相反极性的位减小的位可以增加权重。 对于硬比特，调整可以增加相反极性的比特的加权，并且减少与所讨论的比特相同极性的比特的加权。 可以根据软硬比例的比例对硬和软比特的调整进行不同的加权。
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公开(公告)号：US20110317752A1
公开(公告)日：2011-12-29
申请号：US12825025
申请日：2010-06-28
IPC分类号： H03K5/159
CPC分类号： H04L25/0307 , H04L2025/03617
摘要： This invention relates to methods and apparatus for equalizer adaptation for compensating for channel distortion on received data signals. The method comprises, for each bit, forming an adjusted bit signal comprising a weighted contribution from at least one other bit period. The polarity of the adjusted bit signal is determined and the bit is categorized as a hard, i.e. high confidence, bit is the bit is above an upper threshold or below a lower threshold or otherwise is categorized as a soft bit. The weightings are adjusted based on the category of the bit wherein a first adjustment is made it the bit is categorized as a soft bit but a second, different adjustment is made if the bit is categorized as a hard bit. For a soft bit the weightings may be increased for bits which have the same polarity as the bit in question and decreased for bits of opposite polarity. For a hard bit the adjustment may increase the weighting for bits of opposite polarity and decrease the weighting for bits of the same polarity as the bit in question. The adjustments for the hard and soft bits may be weighted differently according to the proportion of soft to hard bits.
摘要翻译： 本发明涉及用于补偿接收到的数据信号上的信道失真的均衡器适配方法和装置。 对于每个比特，该方法包括从至少一个其他比特周期形成包括加权贡献的经调整的比特信号。 确定调整后的位信号的极性，并将该位分类为硬，即高置信度，该比特是高于上限阈值或低于较低阈值，否则将其归类为软比特。 基于比特的类别来调整权重，其中进行第一调整，其比特被分类为软比特，但是第二，如果比特被分类为硬比特，则进行不同的调整。 对于软位，对于与所讨论的位具有相同极性的位而对于相反极性的位减小的位可以增加权重。 对于硬比特，调整可以增加相反极性的比特的加权，并且减少与所讨论的比特相同极性的比特的加权。 可以根据软硬比例的比例对硬和软比特的调整进行不同的加权。
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公开(公告)号：US20110317789A1
公开(公告)日：2011-12-29
申请号：US12825016
申请日：2010-06-28
IPC分类号： H03K9/00
CPC分类号： H04L7/007 , H03L7/081 , H03L7/091 , H04L7/033 , H04L7/0334
摘要： The application describes digital receivers and operation thereof with improved recovery of a received signal. A clock generator (201) generates a clock signal, for example from the received signal. The clock signal (2) is used for sampling the received signal by comparator (205) which compares the received signal to a reference. A phase shifter (203) adjusts the phase of the first clock signal and a controller (202, 204, 206) adjust the phase of the clock signal to maximize the vertical eye opening of the signal at the sampling time. The phase of the clock signal may be adjusted in a first direction and a measure of vertical eye opening of the signal compared to a previous measure. If the measure of vertical eye opening has increased the signal another phase adjustment may be made in the same direction whereas if the vertical eye opening of the signal has decreased a further phase adjustment in the opposite direction may be made. By increasing the vertical eye opening of the signal the signal to noise ratio of the received signal is improved.
摘要翻译： 该应用描述了数字接收机及其操作，改善了接收信号的恢复。 时钟发生器（201）例如根据接收到的信号产生时钟信号。 时钟信号（2）用于通过将接收到的信号与基准进行比较的比较器（205）对接收信号进行采样。 移相器（203）调节第一时钟信号的相位，并且控制器（202,204,206）调整时钟信号的相位以最大化采样时间的信号的垂直亮度。 与先前的测量相比，可以在第一方向上调整时钟信号的相位和信号的垂直眼睛开度的测量。 如果垂直眼睛开度的测量已经增加了信号，则可以在相同方向上进行另一相位调整，而如果信号的垂直眼睛开度减小，则可以进行相反方向的进一步的相位调整。 通过增加信号的垂直亮度，提高了接收信号的信噪比。
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公开(公告)号：US20110317753A1
公开(公告)日：2011-12-29
申请号：US12825034
申请日：2010-06-28
IPC分类号： H03H7/30
CPC分类号： H04L25/0307 , H04L25/0262 , H04L2025/03668 , H04L2025/03745
摘要： Methods and apparatus adapting equalizers for compensating for signal distortion of a received digital signal are disclosed. The method comprises deriving equalizer settings for a received signal, determining at least one signal parameter of said received signal; and storing the derived equalizer settings together with an indication of the signal parameter. The signal parameter could, for instance, comprise the data rate of the signal. If the signal parameter changes the equalizer is configured to use any stored settings which are appropriate for the new signal parameter. Thus, rather than start an entirely new equalizer adaptation routine every time the signal parameter changes the equalizer will use any stored settings which are appropriate for the changed parameter.
摘要翻译： 公开了用于补偿接收的数字信号的信号失真的适应均衡器的方法和装置。 该方法包括导出接收信号的均衡器设置，确定所述接收信号的至少一个信号参数; 并将导出的均衡器设置与信号参数的指示一起存储。 信号参数可以例如包括信号的数据速率。 如果信号参数改变，均衡器被配置为使用适合于新信号参数的任何存储设置。 因此，每当信号参数改变均衡器时，均不会启动全新的均衡器适配程序，因此均衡器将使用任何适合改变参数的存储设置。
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公开(公告)号：US20110228821A1
公开(公告)日：2011-09-22
申请号：US12725746
申请日：2010-03-17
CPC分类号： H04B3/141 , H04B3/145 , H04B3/36 , H04L25/03019
摘要： A repeater includes at least an adaptive equalizer able to equalize a received signa. An adaptation function that determines the optimal equalizer settings based on the received signal is either integrated in the repeater or closely associated with the repeater. The repeater also has the capability to mute the output signal under control of the adaptation logic, while receiving an input signal which is used to perform the adaptation function.
摘要翻译： 中继器至少包括能够均衡接收到的信号的自适应均衡器。 基于接收到的信号确定最佳均衡器设置的适配功能被集成在中继器中或与中继器紧密相关联。 中继器还具有在自适应逻辑的控制下静音输出信号的能力，同时接收用于执行自适应功能的输入信号。
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