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公开(公告)号：US07583728B2
公开(公告)日：2009-09-01
申请号：US11656662
申请日：2007-01-22
IPC分类号： H03H7/30
CPC分类号： H04L27/3488 , H04L25/03019 , H04L2025/03401 , H04L2025/0342 , H04L2025/0349
摘要： A method and apparatus for equalizing digital data signals is disclosed. The method comprises the steps of demodulating and decoding an input signal having input data to produce a data output, remodulating the data output to produce a training sequence including an idealized input signal, wherein the training sequence is comprised of adjacent symbols in the input data, and generating equalizer parameters from the training sequence. The apparatus comprises a demodulator (for demodulating an input signal to produce a data output), a modulator communicatively coupled to the demodulator (for remodulating the data output to produce a training sequence including an idealized input signal wherein the training sequence is comprised of adjacent symbols in the input data), and a parameter generation module communicatively coupled to the modulator (for generating equalizer parameters from the training sequence).
摘要翻译： 公开了一种均衡数字数据信号的方法和装置。 该方法包括以下步骤：解调和解码具有输入数据的输入信号以产生数据输出，重新调制数据输出以产生包括理想化输入信号的训练序列，其中训练序列由输入数据中的相邻符号组成， 并从训练序列生成均衡器参数。 该装置包括解调器（用于解调输入信号以产生数据输出），通信地耦合到解调器的调制器（用于重新调制数据输出以产生包括理想化输入信号的训练序列，其中训练序列由相邻符号组成 在输入数据中）以及通信地耦合到调制器的参数生成模块（用于从训练序列生成均衡器参数）。
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公开(公告)号：US08208526B2
公开(公告)日：2012-06-26
申请号：US12404253
申请日：2009-03-13
IPC分类号： H03H7/30
CPC分类号： H04L27/3488 , H04L25/03019 , H04L2025/03401 , H04L2025/0342 , H04L2025/0349
摘要： A method and apparatus for equalizing digital data signals is disclosed. The method comprises the steps of demodulating and decoding an input signal having input data to produce a data output, remodulating the data output to produce a training sequence including an idealized input signal, wherein the training sequence is comprised of adjacent symbols in the input data, and generating equalizer parameters from the training sequence. The apparatus comprises a demodulator (for demodulating an input signal to produce a data output), a modulator communicatively coupled to the demodulator (for remodulating the data output to produce a training sequence including an idealized input signal wherein the training sequence is comprised of adjacent symbols in the input data), and a parameter generation module communicatively coupled to the modulator (for generating equalizer parameters from the training sequence).
摘要翻译： 公开了一种用于均衡数字数据信号的方法和装置。 该方法包括以下步骤：解调和解码具有输入数据的输入信号以产生数据输出，重新调制数据输出以产生包括理想化输入信号的训练序列，其中训练序列由输入数据中的相邻符号组成， 并从训练序列生成均衡器参数。 该装置包括解调器（用于解调输入信号以产生数据输出），通信地耦合到解调器的调制器（用于重新调制数据输出以产生包括理想化输入信号的训练序列，其中训练序列由相邻符号组成 在输入数据中）以及通信地耦合到调制器的参数生成模块（用于从训练序列生成均衡器参数）。
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公开(公告)号：US07184489B2
公开(公告)日：2007-02-27
申请号：US10693140
申请日：2003-10-24
申请人： Weizheng Wang , Guangcai Zhou , Tung-Sheng Lin , Ernest C. Chen , Joseph Santoru , William C. Lindsey
发明人： Weizheng Wang , Guangcai Zhou , Tung-Sheng Lin , Ernest C. Chen , Joseph Santoru , William C. Lindsey
IPC分类号： H04L27/04
CPC分类号： H04L1/20 , H04L1/208 , H04L27/183 , H04W52/42
摘要： A method and apparatus for optimizing a system for transmitting a layered modulated signal is disclosed. The method comprises the steps of defining the system in terms of a set of system parameters, including an optimal power separation S between a power of a first modulation layer and a power of a second modulation layer and a required system carrier-to-noise ratio (CNRS), determining an optimal power separation S to minimize the error rate of a lower layer modulated signal BERL, and selecting the remaining system parameters in the set of system parameters using the determined optimal power separation S.
摘要翻译： 公开了一种用于优化用于发送分层调制信号的系统的方法和装置。 该方法包括以下步骤：根据一组系统参数定义系统，包括第一调制层的功率和第二调制层的功率之间的最佳功率分离S和所需的系统载波比 （CNR S S），确定最佳功率分离S以最小化下层调制信号BERLL的错误率，并且选择系统中的剩余系统参数 参数使用确定的最佳功率分离S.
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公开(公告)号：US20090175327A1
公开(公告)日：2009-07-09
申请号：US12404253
申请日：2009-03-13
IPC分类号： H04L27/01
CPC分类号： H04L27/3488 , H04L25/03019 , H04L2025/03401 , H04L2025/0342 , H04L2025/0349
摘要： A method and apparatus for equalizing digital data signals is disclosed. The method comprises the steps of demodulating and decoding an input signal having input data to produce a data output, remodulating the data output to produce a training sequence including an idealized input signal, wherein the training sequence is comprised of adjacent symbols in the input data, and generating equalizer parameters from the training sequence. The apparatus comprises a demodulator (for demodulating an input signal to produce a data output), a modulator communicatively coupled to the demodulator (for remodulating the data output to produce a training sequence including an idealized input signal wherein the training sequence is comprised of adjacent symbols in the input data), and a parameter generation module communicatively coupled to the modulator (for generating equalizer parameters from the training sequence).
摘要翻译： 公开了一种用于均衡数字数据信号的方法和装置。 该方法包括以下步骤：解调和解码具有输入数据的输入信号以产生数据输出，重新调制数据输出以产生包括理想化输入信号的训练序列，其中训练序列由输入数据中的相邻符号组成， 并从训练序列生成均衡器参数。 该装置包括解调器（用于解调输入信号以产生数据输出），通信地耦合到解调器的调制器（用于重新调制数据输出以产生包括理想化输入信号的训练序列，其中训练序列由相邻符号组成 在输入数据中）以及通信地耦合到调制器的参数生成模块（用于从训练序列生成均衡器参数）。
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公开(公告)号：US07469019B2
公开(公告)日：2008-12-23
申请号：US11655001
申请日：2007-01-18
申请人： Weizheng Wang , Guangcai Zhou , Tung-Sheng Lin , Ernest C. Chen , Joseph Santoru , William C. Lindsey
发明人： Weizheng Wang , Guangcai Zhou , Tung-Sheng Lin , Ernest C. Chen , Joseph Santoru , William C. Lindsey
IPC分类号： H04L27/04
CPC分类号： H04L1/20 , H04L1/208 , H04L27/183 , H04W52/42
摘要： A method and apparatus for optimizing a system for transmitting a layered modulated signal is disclosed. The method comprises the steps of defining the system in terms of a set of system parameters, including an optimal power separation S between a power of a first modulation layer and a power of a second modulation layer and a required system carrier-to-noise ratio (CNRS), determining an optimal power separation S to minimize the error rate of a lower layer modulated signal BERL, and selecting the remaining system parameters in the set of system parameters using the determined optimal power separation S.
摘要翻译： 公开了一种用于优化用于发送分层调制信号的系统的方法和装置。 该方法包括以下步骤：根据一组系统参数定义系统，包括第一调制层的功率和第二调制层的功率之间的最佳功率分离S和所需的系统载波比 （CNRS），确定最佳功率分离S以最小化较低层调制信号BERL的误码率，以及使用确定的最佳功率分离S选择该组系统参数中的剩余系统参数。
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公开(公告)号：US07184473B2
公开(公告)日：2007-02-27
申请号：US10691133
申请日：2003-10-22
IPC分类号： H03H7/30
CPC分类号： H04L25/0305 , H04B7/18515 , H04L2025/03477
摘要： A method and apparatus for equalizing digital data signals is disclosed. The method comprises the steps of demodulating and decoding an input signal having input data to produce a data output, remodulating the data output to produce a training sequence including an idealized input signal, wherein the training sequence is comprised of adjacent symbols in the input data, and generating equalizer parameters from the training sequence. The apparatus comprises a demodulator (for demodulating an input signal to produce a data output), a modulator communicatively coupled to the demodulator (for remodulating the data output to produce a training sequence including an idealized input signal wherein the training sequence is comprised of adjacent symbols in the input data), and a parameter generation module communicatively coupled to the modulator (for generating equalizer parameters from the training sequence).
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公开(公告)号：US07403574B2
公开(公告)日：2008-07-22
申请号：US10568384
申请日：2004-08-27
申请人： Ernest C. Chen , Dennis Lai , Tung-Sheng Lin , William C. Lindsey , Shamik Maitra , Joseph Santoru , Guangcai Zhou
发明人： Ernest C. Chen , Dennis Lai , Tung-Sheng Lin , William C. Lindsey , Shamik Maitra , Joseph Santoru , Guangcai Zhou
IPC分类号： H03C3/00
CPC分类号： H04L25/03866 , H04B7/18523 , H04L27/36 , H04N21/23895 , H04N21/4382 , H04N21/43853 , H04N21/6143 , H04N21/6193
摘要： A simplified scrambling scheme that unifies all signals of a satellite broadcasting system, including frame header (404), frame body (402) and pilot symbols (408) with a common reference phase. This results in the simplification and increased flexibility of the receiver front-end design without affecting the overall system performance. In many current communications systems with frame headers and pilot symbols, the phases of frame headers and pilot syrnbols are not designed to be aligned with any constellation points of the modulated data from the frame body. This scrambling scheme takes into account possible impact due to irregular phase changes between frame headers/pilot symbols and modulated data.
摘要翻译： 一种简化的加扰方案，其将具有公共参考相位的卫星广播系统的所有信号（包括帧头部（404）），帧体（402）和导频符号（408）统一起来。 这导致了接收机前端设计的简化和增加的灵活性，而不会影响整个系统的性能。 在具有帧头和导频符号的许多当前通信系统中，帧头和导频符号的相位不被设计为与来自帧体的调制数据的任何星座点对准。 该加扰方案考虑到由帧头/导频符号和调制数据之间的不规则相位变化引起的可能的影响。
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公开(公告)号：US07483505B2
公开(公告)日：2009-01-27
申请号：US10691032
申请日：2003-10-22
IPC分类号： H04B1/10
CPC分类号： H04B7/18515
摘要： A method and apparatus for equalizing digital data signals is disclosed. The method comprises the steps of demodulating and decoding an input signal having input data to produce a data output, remodulating the data output to produce a pseudo-training sequence including an idealized input signal, and generating equalizer parameters from the pseudo-training sequence. The apparatus comprises a demodulator for demodulating an input signal to produce a data output, a modulator, communicatively coupled to the demodulator, for remodulating the data output to produce a pseudo-training sequence including an idealized input signal, and a parameter generation module, communicatively coupled to the modulator for generating equalizer parameters from the pseudo-training sequence.
摘要翻译： 公开了一种用于均衡数字数据信号的方法和装置。 该方法包括以下步骤：解调和解码具有输入数据的输入信号以产生数据输出，重新调制数据输出以产生包括理想化输入信号的伪训练序列，以及从伪训练序列生成均衡器参数。 该装置包括用于解调输入信号以产生数据输出的解调器，通信地耦合到解调器的调制器，用于重新调制数据输出以产生包括理想化输入信号的伪训练序列和参数生成模块，通信地 耦合到用于从伪训练序列产生均衡器参数的调制器。
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公开(公告)号：USRE29069E
公开(公告)日：1976-12-14
申请号：US672921
申请日：1976-04-02
申请人： William C. Lindsey
发明人： William C. Lindsey
CPC分类号： A43D21/16 , A43D13/00 , A43D21/125 , A43D21/18
摘要： A pulling over mechanism for stretching about a last toe portion of an upper that is mounted on the last preparatory to wiping the margin of the toe portion of the upper against an insole that is located on the last bottom. The mechanism includes pincers jaws that are caused to grip the upper margin under relatively light force while the last is raised to allow the upper margin to slip between the pincers jaws. After the last has completed its rise, the pincers jaws are caused to grip the upper margin under relatively heavy force so as to preclude slippage of the margin between the pincers jaws if the pincers should be lowered to relocate the stretched upper on the last.
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公开(公告)号：US4018272A
公开(公告)日：1977-04-19
申请号：US565385
申请日：1975-04-07
IPC分类号： E21B33/122 , E21B33/1295 , E21B33/12
CPC分类号： E21B33/122 , E21B33/1295
摘要： Disclosed is a retrievable, hydraulically set well packer which is locked in set position without need for tubing rotation and may be released from set position by shearing a retrieving link with either a straight pull on the production tubing or by the application of high pressure through the tubing. Dual, opposed cones are employed for retaining the packer slips anchored irrespective of the direction of the pressure differential acting on the packer and without need for an extra sleeve to transmit pressure induced forces to the cones. Compression seals are employed to hold the slips firmly anchored against longitudinal displacement in both directions without reliance on the presence of a pressure differential across the set packer. The seals are employed as two separate assemblies which are positioned above and below the slips to isolate a portion of the pressure induced forces from the retrieving link. A modified form of the invention employs the dual cone, dual seal design on a packer having multiple flow passages.
摘要翻译： 公开了一种可回收的液压设置的打井机，其被锁定在设定位置而不需要管道旋转，并且可以通过在生产管线上直线拉动或通过施加高压通过生产管线剪切回收链节而从设定位置释放 管道。 采用双重对立的锥体来保持封闭器滑动件，而不管作用在封隔器上的压力差的方向如何，并且不需要额外的套筒将压力引起的力传递到锥体。 使用压缩密封件来保持滑块在两个方向上牢固地锚定在纵向位移上，而不依赖于在整个封隔器上存在压力差。 密封件被用作两个单独的组件，其被定位在滑动件的上方和下方，以隔离压力诱导力与检索链节的一部分。 本发明的改进形式在具有多个流动通道的封隔器上采用双锥体双重密封设计。
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