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1. 发明授权

US07920643B2 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：US07920643B2
公开(公告)日：2011-04-05
申请号：US12207462
申请日：2008-09-09
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。

2. 发明授权

US07859330B2 Optimized uplink efficiencies for transmission of satellite data 有权
标题翻译：优化卫星数据传输的上行效率
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。

3. 发明授权

US07844213B2 Reducing spectral roll-off factors to increase spectral efficiency 有权
标题翻译：降低光谱衰减因子，提高光谱效率
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。

4. 发明申请

US20090175327A1 EQUALIZERS FOR LAYERED MODULATED AND OTHER SIGNALS 有权
标题翻译：用于层状调制和其他信号的均衡器
公开(公告)号：US20090175327A1
公开(公告)日：2009-07-09
申请号：US12404253
申请日：2009-03-13
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： 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）。

5. 发明授权

US07551736B2 Physical layer header scrambling in satellite broadcast systems 有权
标题翻译：卫星广播系统中的物理层报头扰频
公开(公告)号：US07551736B2
公开(公告)日：2009-06-23
申请号：US11102958
申请日：2005-04-11
申请人： Lin-Nan Lee , Feng-Wen Sun , Adam Von Ancken , Joseph Santoru , Ernest C. Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
发明人： Lin-Nan Lee , Feng-Wen Sun , Adam Von Ancken , Joseph Santoru , Ernest C. Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
IPC分类号： H04N7/167 , H04B15/00
CPC分类号： H04N5/211 , H04B7/18513 , H04B7/1858 , H04N7/16 , H04N7/163 , H04N7/1675 , H04N7/17318 , H04N21/2347 , H04N21/4405 , H04N21/6143
摘要： Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises scrambling a first header of the first signal using a first scrambling code, scrambling a second header of the second signal using a second scrambling code, and transmitting the first signal and the second signal with the scrambled first header and the scrambled second header over different channels of the communication system.
摘要翻译：公开了用于最小化通信系统中的同信道干扰的方法和装置。根据本发明的方法包括使用第一扰码对第一信号的第一报头进行加扰，使用第二加扰码对第二信号的第二报头进行加扰，并且以第一加扰方式发送第一信号和第二信号报头和通信系统的不同信道上的加扰的第二报头。

6. 发明授权

US07512189B2 Lower complexity layered modulation signal processor 有权
标题翻译：较低复杂度的分层调制信号处理器
公开(公告)号：US07512189B2
公开(公告)日：2009-03-31
申请号：US10532632
申请日：2003-10-10
申请人： Ernest C. Chen , Weizheng W. Wang , Guangcai Zhou , Tung-Sheng Lin , Joseph Santoru
发明人： Ernest C. Chen , Weizheng W. Wang , Guangcai Zhou , Tung-Sheng Lin , Joseph Santoru
IPC分类号： H04L27/00
CPC分类号： H04L27/3488 , H04B7/18515 , H04B17/318 , H04L1/20 , H04L27/183 , H04L27/227 , H04L27/366 , H04L2027/0061
摘要： A method and apparatus for transmitting and receiving a coded signal having an upper layer signal and a lower layer signal is disclosed. The method comprises the steps of combining the upper layer signal and the lower layer signal, encoding the combined upper layer signal and lower layer signal, delaying the upper layer signal, modulating the delayed upper layer signal, modulating the lower layer signal, transmitting the delayed upper layer signal and transmitting the lower layer signal. The apparatus comprises an encoder, for encoding a combined upper layer signal and lower layer signal, a delay, communicatively coupled to the encoder, for delaying the upper layer signal, a first modulator, for modulating the delayed upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter, communicatively coupled to the second modulator.
摘要翻译：公开了一种用于发送和接收具有上层信号和下层信号的编码信号的方法和装置。该方法包括以下步骤：组合上层信号和下层信号，编码组合上层信号和下层信号，延迟上层信号，调制延迟的上层信号，调制下层信号，发送延迟的上层信号并传输下层信号。该装置包括用于编码组合的上层信号和下层信号的编码器，通信地耦合到编码器的用于延迟上层信号的延迟，用于调制延迟的上层信号的第一调制器，第二调制器，用于调制下层信号的发射机，通信地耦合到第一调制器，用于发送延迟的上层信号;以及第二发射机，通信地耦合到第二调制器。

7. 发明授权

US07483505B2 Unblind equalizer architecture for digital communication systems 有权
标题翻译：用于数字通信系统的无盲均衡器架构
公开(公告)号：US07483505B2
公开(公告)日：2009-01-27
申请号：US10691032
申请日：2003-10-22
申请人： Weizheng W. Wang , Tung-Sheng Lin , Ernest C. Chen , William C. Lindsey
发明人： Weizheng W. Wang , Tung-Sheng Lin , Ernest C. Chen , William C. Lindsey
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。

8. 发明授权

US07469019B2 Optimization technique for layered modulation 有权
标题翻译：分层调制优化技术
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。

9. 发明申请

US20080298505A1 HIERARCHICAL 8PSK PERFORMANCE 有权
标题翻译：分层8PSK性能
公开(公告)号：US20080298505A1
公开(公告)日：2008-12-04
申请号：US12176533
申请日：2008-07-21
申请人： Ernest C. Chen , Joseph Santoru
发明人： Ernest C. Chen , Joseph Santoru
IPC分类号： H04L27/22
CPC分类号： H04L1/20 , H04L1/208 , H04L27/183 , H04L2001/0098
摘要： A method and receiver systems for demodulating and decoding a hierarchically modulated signal, e.g. an 8PSK signal, are disclosed. An exemplary method includes demodulating and processing (502) the hierarchically modulated signal (202) to produce symbols (212) from the first modulation at the first hierarchical level, applying information (504) from a plurality of the symbols from the first modulation at the first hierarchical level in subtracting (214) from the demodulated hierarchically modulated signal to obtain the second modulation at the second hierarchical level and processing (506) the second modulation at the second hierarchical level to produce second symbols (222) from the demodulated second signal. The hierarchically modulated signal comprises a non-uniform 8PSK signal. Applying the information from the plurality of the symbols from the first modulation can be achieved by applying the symbols after error correction. A decision-directed demodulation of the first modulation can also be used to further improve performance.
摘要翻译：用于解调和解码分层调制信号的方法和接收机系统，例如， 8PSK信号。一种示例性方法包括解调和处理（502）分级调制信号（202）以从第一层级的第一调制产生符号（212），从来自第一调制的多个符号应用信息（504）从解调的分层调制信号中减去（214）第一层级，以获得第二层级的第二调制，并处理（506）第二层级的第二调制，以从解调的第二信号产生第二符号（222）。分级调制信号包括不均匀的8PSK信号。可以通过在纠错后应用符号来实现来自第一调制的多个符号的信息。也可以使用第一调制的决策导向解调来进一步提高性能。

10. 发明授权

US07423987B2 Feeder link configurations to support layered modulation for digital signals 有权
标题翻译：馈线链路配置，支持数字信号的分层调制
公开(公告)号：US07423987B2
公开(公告)日：2008-09-09
申请号：US10532631
申请日：2003-10-20
申请人： Paul R. Anderson , Joseph Santoru , Ernest C. Chen
发明人： Paul R. Anderson , Joseph Santoru , Ernest C. Chen
IPC分类号： H04B7/185
CPC分类号： H04L27/0008 , H04B7/18526 , H04N7/20
摘要： Systems and methods are disclosed for feeder link configurations to layered modulation. One feeder link system employs feeder link spot beam to antennas in distinct coverage areas to enable frequency reuse. Another system employs narrow beam width feeder link antenna to illuminate individual satellites also enabling frequency reuse. Yet another system uses layered modulation in the feeder link. Another feeder link system employs a higher order synchronous modulation for the satellite feeder link than is used in the layered modulation downlink signals.
摘要翻译：公开了用于馈线链路配置到分层调制的系统和方法。一个馈线链路系统使用馈线链路点波束到不同覆盖区域中的天线，以实现频率重用。另一个系统采用窄波束宽度馈线链路天线来照亮单个卫星，同时也实现频率重用。另一种系统在馈线链路中使用分层调制。另一个馈线链路系统对卫星馈线链路采用比在分层调制下行链路信号中使用的更高阶同步调制。

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