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61. 发明授权

US08130818B2 Maximizing power and spectral efficiencies for layered and conventional modulations 有权
标题翻译：最大化分层和传统调制的功率和频谱效率
公开(公告)号：US08130818B2
公开(公告)日：2012-03-06
申请号：US12973710
申请日：2010-12-20
申请人： Ernest C. Chen
发明人： Ernest C. Chen
IPC分类号： H04B1/38
CPC分类号： H04H20/30 , H04H20/42 , H04H20/51 , H04H20/74 , H04N7/20 , H04N21/84 , Y02D70/168
摘要： Methods and apparatuses for maximizing power and spectral efficiencies in a wireless communication system are disclosed. The invention is particularly useful for layered modulation applications because power levels for such applications are relatively high. A layered modulation signal comprises an upper and a lower layer signal that interfere with each other within the same frequency band such that the upper layer signal can be demodulated directly from the layered modulation signal, and the lower layer signal can be demodulated after subtracting the first layer signal from the layered modulation signal. The invention applies one or more of the following four signal schemes in a communication signal including varying the symbol rate (rather than the code rate), reducing or eliminating the guard band, reducing excess signal bandwidth and employing layered modulation within the guard band of the legacy signal.
摘要翻译：公开了一种用于使无线通信系统中的功率和频谱效率最大化的方法和装置。本发明对于分层调制应用特别有用，因为这种应用的功率水平相对较高。分层调制信号包括在相同频带内彼此干扰的上层信号和下层信号，使得可以从分层调制信号直接解调上层信号，并且可以在减去第一层之后解调下层信号来自分层调制信号的层信号。本发明将以下四种信号方案中的一种或多种应用于包括改变符号率（而不是码率）的通信信号中，减少或消除了保护频带，减少了多余的信号带宽并且在遗留信号。

62. 发明授权

US08005035B2 Online output multiplexer filter measurement 有权
标题翻译：在线输出多路复用器滤波器测量
公开(公告)号：US08005035B2
公开(公告)日：2011-08-23
申请号：US10692491
申请日：2003-10-24
申请人： Ernest C. Chen
发明人： Ernest C. Chen
IPC分类号： H04B7/185
CPC分类号： H04B7/18515
摘要： A method, apparatus, and system provide the ability to conduct an on-line measurement of an output multiplixer (OMUX) transfer function. A broadcast downlink signal is received from a satellite. The broadcast downlink signal is demodulated and then remodulated. The received broadcast downlink signal is then compared to the remodulated signal to estimate the OMUX transfer function of the satellite.
摘要翻译：方法，装置和系统提供对输出倍增器（OMUX）传递函数进行在线测量的能力。从卫星接收广播下行链路信号。广播下行链路信号被解调，然后被重新调制。然后将所接收的广播下行链路信号与重新调制的信号进行比较，以估计卫星的OMUX传送功能。

63. 发明授权

US07778365B2 Satellite TWTA on-line non-linearity measurement 有权
标题翻译：卫星TWTA在线非线性测量
公开(公告)号：US07778365B2
公开(公告)日：2010-08-17
申请号：US10165710
申请日：2002-06-07
申请人： Ernest C. Chen
发明人： Ernest C. Chen
IPC分类号： H03D1/04 , H03K5/01 , H04L1/00 , H04L25/08
CPC分类号： H03F1/32 , H03F3/58 , H03F2200/393 , H04B7/18515 , H04B17/318 , H04L1/20 , H04L27/183 , H04L27/227 , H04L27/366 , H04L2027/0061
摘要： The present invention discloses methods and systems of measuring transmission performance characteristics, such as from an amplifier. The method comprises the steps of receiving a signal, demodulating the signal, generating an ideal signal from the demodulated signal and estimating the performance characteristic from a difference between the ideal signal and the received signal. A system for measuring a transmission performance characteristic, comprises a demodulator for demodulating a received signal, a signal generator for producing an ideal signal from the demodulated signal and a processor for estimating the performance characteristic from a difference between the ideal signal and the received signal.
摘要翻译：本发明公开了一种从放大器测量传输性能特征的方法和系统。该方法包括以下步骤：接收信号，解调信号，从解调信号产生理想信号，并从理想信号与接收信号之间的差估计性能特性。用于测量传输性能特性的系统包括用于解调接收信号的解调器，用于从解调信号产生理想信号的信号发生器和用于根据理想信号和接收信号之间的差估计性能特性的处理器。

64. 发明授权

US07583728B2 Equalizers for layered modulated and other signals 有权
标题翻译：均衡器用于分层调制和其他信号
公开(公告)号：US07583728B2
公开(公告)日：2009-09-01
申请号：US11656662
申请日：2007-01-22
申请人： Ernest C. Chen , Tung-Sheng Lin , Weizheng Wang , William C. Lindsey
发明人： Ernest C. Chen , Tung-Sheng Lin , Weizheng Wang , William C. Lindsey
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）。

65. 发明授权

US5343203A Doppler tracking method for object imaging from radar returns 失效
标题翻译：雷达回波对象成像多普勒跟踪方法
公开(公告)号：US5343203A
公开(公告)日：1994-08-30
申请号：US949920
申请日：1992-09-24
申请人： Ernest C. Chen
发明人： Ernest C. Chen
IPC分类号： G01S7/292 , G01S13/50 , G01S13/90 , G01S13/00
CPC分类号： G01S13/9029
摘要： A method of tracking an object in the Doppler dimension that provides for improved imaging. The method tracks the centroid of the object's Doppler and smooths out noisy estimates of its phase history. The tracking and smoothing combine to improve tracking performance and image quality. Doppler signals are generated by a coarse Doppler tracker that removes translational motion of the object. Pulse pair processing produces an estimate the Doppler centroid of the object. For each pair of adjacent pulses, pulse pair processing is applied to individual range bins, and the outputs are combined to estimate the Doppler centroid of the object at that particular time. A low pass filter is used after pulse pair processing to smooth out phase increments. Phase increment smoothing then filters the output signals from the filter with a smooth curve, such as a second-degree polynomial. Phase recursion then produces a phase history. The recursive phase history is differenced with updated, appropriately delayed phases. The difference phases are compensated from the radar return from the coarse Doppler tracker. Fast Fourier transform processing then produces a Fourier transformed image. The output from the filter is also processed to update the phase and the phase updated signals are fed back to the coarse Doppler tracker. The phase updating integrates the output of the filter to update the phase history of the object based on phase increments derived from the filter. The phase update is also delayed in order to match these phases in timing with those from the phase recursion step.
摘要翻译：跟踪多普勒维度中提取改进成像的物体的方法。该方法跟踪对象多普勒的质心，并平滑其相位历史的嘈杂估计。跟踪和平滑结合，提高跟踪性能和图像质量。多普勒信号由粗略的多普勒跟踪器产生，该跟踪器消除对象的平移运动。脉冲对处理产生对象的多普勒重心的估计。对于每对相邻脉冲，将脉冲对处理应用于各个范围仓，并且输出被组合以估计该特定时间的对象的多普勒质心。在脉冲对处理之后使用低通滤波器来平滑相位增量。相位增量平滑然后用平滑曲线（例如二次多项式）对来自滤波器的输出信号进行滤波。相位递归然后产生相位历史。递归阶段历史与更新的适当延迟阶段不同。差分相位从粗糙多普勒跟踪器的雷达回波补偿。然后，快速傅立叶变换处理产生傅立叶变换图像。滤波器的输出也被处理以更新相位，相位更新信号被反馈到粗糙多普勒跟踪器。相位更新集成滤波器的输出，基于从滤波器导出的相位增量来更新对象的相位历史。相位更新也被延迟以便将时序中的这些相位与来自相位递归步骤的相位相匹配。

66. 发明授权

US08200149B1 Combining transponder bandwidths for source and forward error correction encoding efficiency 有权
标题翻译：组合发送应答器带宽用于源和前向纠错编码效率
公开(公告)号：US08200149B1
公开(公告)日：2012-06-12
申请号：US11193856
申请日：2005-07-29
申请人： Ernest C. Chen
发明人： Ernest C. Chen
IPC分类号： H04B7/185 , H04B7/19 , H04B7/204 , H04B7/216 , H04B1/00 , H04B1/38 , H04W4/00 , G01S13/00 , H04J3/18 , H04L27/28 , H04N7/20 , H04N7/173
CPC分类号： H04B7/1851 , H04B1/69 , H04B7/18513 , H04B7/18515 , H04B7/18517 , H04B7/18523 , H04B7/18543 , H04J13/0048 , H04L5/0016 , H04L5/006 , H04L27/28 , H04N7/22 , H04N21/23608 , H04N21/23655 , H04N21/2383 , H04N21/4344 , H04N21/4347 , H04N21/4382 , H04N21/631 , H04W4/06
摘要： An apparatus and method for combining transponder bandwidths comprises a wide-band virtual transponder for transmitting a single data stream. The wide-band virtual transponder is comprised of a plurality of narrow-band physical transponders. A plurality of elementary streams are statistically multiplexed to create the single data stream, wherein the single data stream is forward error correction encoded and demultiplexed into a plurality of transponder streams for transmission by the plurality of physical transponders. The physical transponders each use a different portion of a signal spectrum, wherein the different portion may be guard bands or a combination of legacy bands and guard bands. Upon receipt, the transponder streams are multiplexed to recover the single data stream, wherein the recovered single data stream is forward error correction decoded and statistically demultiplexed to recover the plurality of elementary streams.
摘要翻译：用于组合应答器带宽的装置和方法包括用于发送单个数据流的宽带虚拟转发器。宽带虚拟转发器由多个窄带物理转发器组成。多个基本流被统计地复用以产生单个数据流，其中单个数据流被前向纠错编码和解复用为多个应答器流，以供多个物理转发器发送。物理转发器各自使用信号频谱的不同部分，其中不同部分可以是保护频带或传统频带和保护频带的组合。在接收时，应答器流被多路复用以恢复单个数据流，其中恢复的单个数据流被前向纠错解码并且被统计地解复用以恢复多个基本流。

67. 发明申请

US20110154412A1 Maximizing Power and Spectral Efficiencies for Layered and Conventional Modulations 有权
标题翻译：最大化分层和传统调制的功率和光谱效率
公开(公告)号：US20110154412A1
公开(公告)日：2011-06-23
申请号：US12973710
申请日：2010-12-20
申请人： Ernest C. Chen
发明人： Ernest C. Chen
IPC分类号： H04N7/20
CPC分类号： H04H20/30 , H04H20/42 , H04H20/51 , H04H20/74 , H04N7/20 , H04N21/84 , Y02D70/168
摘要： Methods and apparatuses for maximizing power and spectral efficiencies in a wireless communication system are disclosed. The invention is particularly useful for layered modulation applications because power levels for such applications are relatively high. A layered modulation signal comprises an upper and a lower layer signal that interfere with each other within the same frequency band such that the upper layer signal can be demodulated directly from the layered modulation signal, and the lower layer signal can be demodulated after subtracting the first layer signal from the layered modulation signal. The invention applies one or more of the following four signal schemes in a communication signal including varying the symbol rate (rather than the code rate), reducing or eliminating the guard band, reducing excess signal bandwidth and employing layered modulation within the guard band of the legacy signal.
摘要翻译：公开了一种用于使无线通信系统中的功率和频谱效率最大化的方法和装置。本发明对于分层调制应用特别有用，因为这种应用的功率水平相对较高。分层调制信号包括在相同频带内彼此干扰的上层信号和下层信号，使得可以从分层调制信号直接解调上层信号，并且可以在减去第一层之后解调下层信号来自分层调制信号的层信号。本发明将以下四种信号方案中的一种或多种应用于包括改变符号率（而不是码率）的通信信号中，减少或消除了保护频带，减少了多余的信号带宽并且在遗留信号。

68. 发明授权

US07639759B2 Carrier to noise ratio estimations from a received signal 有权
标题翻译：来自接收信号的载波噪声比估计
公开(公告)号：US07639759B2
公开(公告)日：2009-12-29
申请号：US10913927
申请日：2004-08-05
申请人： Ernest C. Chen
发明人： Ernest C. Chen
IPC分类号： H03D3/22
CPC分类号： H04B1/1027 , H04B7/18515 , H04B17/21 , H04B17/336 , H04L1/0048 , H04L1/20 , H04L27/183 , H04L27/227 , H04L27/34 , H04L27/366 , H04L2027/0061 , H04N5/455 , H04N17/004
摘要： Techniques for measuring the carrier to noise ratio (CNR) in a received digital signal are disclosed. The methods can operate on a received digital signal, such as a layered modulation signal used in a satellite television system. The CNR measurement can be made at the output of a carrier recovery loop or a timing recovery loop in a demodulator. Alternately, the CNR measurement can be made when the received signal is digitized in an analog to digital (A/D) converter at base-band by the demodulator.
摘要翻译：公开了用于测量接收数字信号中载波噪声比（CNR）的技术。这些方法可以对接收的数字信号进行操作，例如在卫星电视系统中使用的分层调制信号。 CNR测量可以在解调器中的载波恢复环路或定时恢复环路的输出端进行。或者，当通过解调器在基带上的模数（A / D）转换器中接收信号被数字化时，可以进行CNR测量。

69. 发明授权

US07474710B2 Amplitude and phase matching for layered modulation reception 有权
标题翻译：分层调制接收的幅度和相位匹配
公开(公告)号：US07474710B2
公开(公告)日：2009-01-06
申请号：US10532524
申请日：2003-10-03
申请人： Ernest C. Chen , Jeng-Hong Chen , Kenneth Shum , Joungheon Oh
发明人： Ernest C. Chen , Jeng-Hong Chen , Kenneth Shum , Joungheon Oh
IPC分类号： H03K9/00
CPC分类号： H04H60/07 , H04B7/18523 , H04H20/51 , H04H40/90 , H04L27/183 , H04L27/3488
摘要： An apparatus and method for receiving layered modulation signals is disclosed. A typical method includes receiving a layered modulation signal including an upper layer signal and a lower layer signal, demodulating and decoding the upper layer signal from the received layered modulation signal, estimating an upper layer amplitude factor and an upper layer phase factor from the received layered modulation signal. A substantially ideal upper layer signal is reconstructed from the demodulated and decoded upper layer signal including matching an ideal amplitude and an ideal phase by applying the upper layer amplitude factor and the upper layer phase factor to the reconstructed ideal upper layer signal. Finally, the reconstructed ideal upper layer signal is subtracted from the received layered modulation signal to produce the lower layer signal for processing.
摘要翻译：公开了一种用于接收分层调制信号的装置和方法。一种典型的方法包括接收包括上层信号和下层信号的分层调制信号，从接收到的分层调制信号中解调和解码上层信号，从接收到的分层调制信号估计上层振幅因子和上层相位因子调制信号。通过将上层振幅因子和上层相位因子应用于重建的理想上层信号，从解调和解码的上层信号中重构理想的上层信号，包括理想幅度和理想相位的匹配。最后，从接收到的分层调制信号中减去重建的理想上层信号，产生下层信号进行处理。

70. 发明授权

US07471735B2 Maximizing power and spectral efficiencies for layered and conventional modulations 有权
标题翻译：最大化分层和传统调制的功率和频谱效率
公开(公告)号：US07471735B2
公开(公告)日：2008-12-30
申请号：US10532619
申请日：2003-10-16
申请人： Ernest C. Chen
发明人： Ernest C. Chen
IPC分类号： H04L27/04
CPC分类号： H04H20/30 , H04H20/42 , H04H20/51 , H04H20/74 , H04N7/20 , H04N21/84 , Y02D70/168
摘要： Methods and apparatuses for maximizing power and spectral efficiencies in a wireless communication system are disclosed. The invention is particularly useful for layered modulation applications because power levels for such applications are relatively high. A layered modulation signal comprises an upper and a lower layer signal that interfere with each other within the same frequency band such that the upper layer signal can be demodulated directly from the layered modulation signal, and the lower layer signal can be demodulated after subtracting the first layer signal from the layered modulation signal. The invention applies one or more of the following four signal schemes in a communication signal including varying the symbol rate (rather than the code rate), reducing or eliminating the guard band, reducing excess signal bandwidth and employing layered modulation within the guard band of the legacy signal.
摘要翻译：公开了一种用于使无线通信系统中的功率和频谱效率最大化的方法和装置。本发明对于分层调制应用特别有用，因为这种应用的功率水平相对较高。分层调制信号包括在相同频带内彼此干扰的上层信号和下层信号，使得可以从分层调制信号直接解调上层信号，并且可以在减去第一层之后解调下层信号来自分层调制信号的层信号。本发明将以下四种信号方案中的一种或多种应用于包括改变符号率（而不是码率）的通信信号中，减少或消除了保护频带，减少了多余的信号带宽并且在遗留信号。

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