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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：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：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：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：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：US07859330B2
公开(公告)日：2010-12-28
申请号：US12421485
申请日：2009-04-09
申请人： Guangcai Zhou , Tung-Sheng Lin , Dennis Lai , Joseph Santoru , Ernest C. Chen , Shamik Maitra , Cecilia Comeaux
发明人： Guangcai Zhou , Tung-Sheng Lin , Dennis Lai , Joseph Santoru , Ernest C. Chen , Shamik Maitra , Cecilia Comeaux
IPC分类号： G01R19/00
CPC分类号： H04B17/0085 , H03F1/32 , H04B17/15
摘要： Systems and methods for characterizing amplifiers. A system for characterizing an amplifier in accordance with the present invention comprises a Gaussian signal source for generating a signal in the frequency domain, a notch filter, coupled to the Gaussian Noise source, wherein the notch filter has a notch at a specified frequency and a frequency bandwidth, the frequency bandwidth encompassing the specified frequency, an Inverse Fast Fourier Transform device, coupled to an output of the notch filter, a normalization device, coupled to the Inverse Fast Fourier Transform device, an amplifier under test, coupled to the normalization device, for amplifying the signal generated by the Gaussian signal source, and a measurement device, coupled to an output of the amplifier, for measuring a power output of the amplifier in the frequency bandwidth and a noise output at the specified notch frequency, and for calculating the ratio between the power output and the noise output.
摘要翻译： 表征放大器的系统和方法。 用于表征根据本发明的放大器的系统包括用于产生频域中的信号的高斯信号源，耦合到高斯噪声源的陷波滤波器，其中陷波滤波器具有指定频率的陷波和 频率带宽，包含指定频率的频率带宽，耦合到陷波滤波器的输出的反相快速傅立叶变换装置，耦合到快速傅立叶逆变换装置的归一化装置，被测放大器，耦合到归一化装置 ，用于放大由高斯信号源产生的信号，以及耦合到放大器的输出的测量装置，用于测量放大器在频率带宽中的功率输出和在指定陷波频率下的噪声输出，并用于计算 功率输出与噪声输出之间的比例。
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公开(公告)号：US07844213B2
公开(公告)日：2010-11-30
申请号：US11831821
申请日：2007-07-31
申请人： Ernest C. Chen , Joseph Santoru , Shamik Maitra , Dennis Lai , Tung-Sheng Lin , Guangcai Zhou
发明人： Ernest C. Chen , Joseph Santoru , Shamik Maitra , Dennis Lai , Tung-Sheng Lin , Guangcai Zhou
IPC分类号： H04H1/00
CPC分类号： H04B7/18515
摘要： Systems for delivering a plurality of broadcast programs where the transmitter and receiver roll-off factors are mismatched. A system in accordance with the present invention comprises a transmitter comprising a modulator, and a plurality of receivers, each receiver in the plurality of receivers receiving the plurality of broadcast programs, each receiver in the plurality of receivers further comprising a demodulator; wherein the modulator has a first root-raised cosine filter having a first roll-off factor and each receiver has a second root-raised cosine filter having a second roll-off factor, the first roll-off factor being smaller than the second roll-off factor.
摘要翻译： 用于传送发射机和接收机滚降因子不匹配的多个广播节目的系统。 根据本发明的系统包括：发射机，包括调制器和多个接收机，所述多个接收机中的每个接收机接收所述多个广播节目，所述多个接收机中的每个接收机还包括解调器; 其中所述调制器具有具有第一滚降因子的第一根升余弦滤波器，并且每个接收器具有具有第二滚降因子的第二根升余弦滤波器，所述第一滚降因子小于所述第二滚降系数， 关闭因素。
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