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1.发明授权Hierarchically modulated OFDM communication from a satellite-based transmitter with reduced secondary data loss from clipping 有权来自基于卫星的发射机的分层调制OFDM通信具有减少的二次数据丢失公开(公告)号：US07903629B2
公开(公告)日：2011-03-08
申请号：US12362712
申请日：2009-01-30
IPC分类号： H04B7/208
CPC分类号： H04B7/18523 , H04L1/007 , H04L27/2604 , H04L27/2614 , H04L27/2626 , H04L27/2647 , H04L27/3488
摘要： High priority data and low priority digital data are transmitted as primary and secondary data in hierarchically modulated, orthogonal frequency division multiplexing (OFDM) from an earth-orbiting satellite. To enable the transmitter amplifier to be operated with less back-off from saturation without clipping, the low priority OFDM symbols have fewer samples than the high priority OFDM symbols, and the high priority samples on which the low priority samples are superimposed are selected according to a first deterministic rule using sample power comparisons of the high priority samples to concentrate the low priority samples on those high priority samples having lower (optimally, the lowest) sample power. The low priority samples are distributed on the selected high priority samples according to a second deterministic rule relating the original low priority sample order to the original high priority sample order.
摘要翻译： 高优先级数据和低优先级数字数据作为来自地球轨道卫星的分层调制的正交频分复用（OFDM）中的主要和次要数据被发送。 为了使得发射机放大器能够在没有削波的情况下以较少的饱和后退运行，低优先级OFDM符号具有比高优先级OFDM符号少的采样，并且根据 使用高优先级样本的采样功率比较的第一确定性规则将低优先级样本集中在具有较低（最佳，最低））采样功率的那些高优先级样本上。 低优先级样本根据与原始低优先级采样顺序相关联的原始高优先级采样顺序的第二确定规则分布在所选择的高优先级采样上。
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2.发明授权Communication system and method for receiving high priority and low priority signals 有权用于接收高优先级和低优先级信号的通信系统和方法公开(公告)号：US07869533B2
公开(公告)日：2011-01-11
申请号：US11895806
申请日：2007-08-27
申请人： Glenn A. Walker , Eric A. Dibiaso
发明人： Glenn A. Walker , Eric A. Dibiaso
IPC分类号： H04K1/10
CPC分类号： H04B7/18523 , H04H20/67 , H04H20/74
摘要： A communication system and method of communicating signals to a plurality of different types of receivers is provided. At least one transmitter transmits hierarchically modulated high priority and low priority signals as a single frequency network. At least one satellite re-transmits the high priority signal in a first circularly polarized direction and the low priority signal in a second circularly polarized direction. At least one of a first receiver having a single antenna is configured to receive the high priority signal in the first circularly polarized direction and switched to receive the low priority signal in the second circularly polarized direction, and a second receiver having a first antenna is configured to receive the high priority signal in the first circularly polarized direction, and a second antenna is configured to receive the low priority signal in the second circularly polarized direction substantially simultaneously.
摘要翻译： 提供了向多个不同类型的接收机传送信号的通信系统和方法。 至少一个发射机发送分层调制的高优先级和低优先级信号作为单频网络。 至少一个卫星在第一圆偏振方向上重新发送高优先级信号，并且在第二圆偏振方向重新发送低优先级信号。 具有单个天线的第一接收机中的至少一个被配置为在第一圆偏振方向上接收高优先级信号，并且被切换以在第二圆极化方向上接收低优先级信号，并且配置具有第一天线的第二接收机 以在第一圆偏振方向上接收高优先级信号，并且第二天线被配置为基本同时接收第二圆偏振方向的低优先级信号。
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3.发明授权Communication system and method of receiving high priority signals and low priority signals 失效通信系统和接收高优先级信号和低优先级信号的方法公开(公告)号：US07835692B2
公开(公告)日：2010-11-16
申请号：US11895796
申请日：2007-08-27
申请人： Glenn A. Walker , Eric A. Dibiaso
发明人： Glenn A. Walker , Eric A. Dibiaso
IPC分类号： H04Q7/20
CPC分类号： H04B7/18523 , H04B7/04 , H04B7/10 , H04H20/22 , H04H20/423 , H04H20/57 , H04H20/67 , H04H20/74 , H04H40/90 , H04L27/183 , H04L27/3488
摘要： A communication system and method of communicating signals to a plurality of different types of receivers is provided. The communication system includes at least one transmitter that transmits a high priority signal and a low priority signal that are hierarchically modulated and transmitted as a single frequency network. At least one satellite receives and re-transmits at least one of the high priority and low priority signals. At least one of the plurality of receivers include a processor that performs the steps of storing the hierarchically modulated signal, demodulating the high priority signal from the hierarchically modulated signal, decoding the demodulated high priority signal, re-encoding the high priority signal, and processing the stored hierarchically modulated signal based upon the re-encoded high priority signal.
摘要翻译： 提供了向多个不同类型的接收机传送信号的通信系统和方法。 通信系统包括至少一个发送器，其发送作为单频网络分层调制和发送的高优先级信号和低优先级信号。 至少一个卫星接收并重新发送高优先级和低优先级信号中的至少一个。 多个接收机中的至少一个包括执行以下步骤的处理器：存储分层调制信号，解调来自分层调制信号的高优先级信号，对解调的高优先级信号进行解码，重新编码高优先级信号，以及处理 基于重新编码的高优先级信号存储的分层调制信号。
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公开(公告)号：US20080247444A1
公开(公告)日：2008-10-09
申请号：US11732896
申请日：2007-04-05
申请人： Eric A. Dibiaso , Glenn A. Walker
发明人： Eric A. Dibiaso , Glenn A. Walker
IPC分类号： H04L5/16
摘要： A system and method of multi-source communications, including a source provider, a transmitter, a receiver, a summing device, a plurality of delay devices, and a switch. The source provider provides a signal including a first and second signal. The transmitter is in communication with the source provider and the receiver. The receiver is in communication with the transmitter. The summing device combines the first and second signals received by the receiver. The delay device delays at least one of the first and second signals. The switch forms a bypass, such that at least one of the first and second signals bypasses one of the plurality of delay devices.
摘要翻译： 一种多源通信的系统和方法，包括源提供者，发射机，接收机，加法装置，多个延迟装置和交换机。 源提供者提供包括第一和第二信号的信号。 发射机与源提供商和接收机进行通信。 接收机与发射机通信。 求和装置组合由接收机接收的第一和第二信号。 延迟装置延迟第一和第二信号中的至少一个。 开关形成旁路，使得第一和第二信号中的至少一个绕过多个延迟装置中的一个。
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5.发明授权Method to minimize compatibility error in hierarchical modulation using variable phase 有权使用可变相分级调制最小化兼容性错误的方法公开(公告)号：US07751497B2
公开(公告)日：2010-07-06
申请号：US11474735
申请日：2006-06-26
CPC分类号： H04B7/18513 , H04L27/183 , H04L27/3488
摘要： The present invention provides a method, receiver and transmitter for use in a SDAR system. The method involves generating a first modulated signal based on first input data. Additional modulation is superimposed on the first modulated signal based on additional input data, being spread across a plurality of symbols in the first modulated signal in a predetermined pattern to generate a modified signal which is then transmitted. The modified signal is decoded by performing a first demodulation of the first modulated signal then additional demodulation is performed to obtain additional input data. The superimposing step uses a plurality of offset sequence values to add the additional modulation to the first modulated signal. The offset sequence may appear as a pseudo-random distribution of offset sequence values, and may include at least one zero offset value. Alternatively, the additional modulated signal may be a formed as a direct sequence spread spectrum modulation and the offset sequence appearing as a pseudo-noise distribution. A Hadamard matrix sequence may be used as the direct sequence code.
摘要翻译： 本发明提供一种用于SDAR系统的方法，接收机和发射机。 该方法包括基于第一输入数据产生第一调制信号。 基于额外的输入数据将附加调制叠加在第一调制信号上，以预定模式扩展到第一调制信号中的多个符号，以产生随后发送的经修改的信号。 通过执行第一调制信号的第一解调来解码修改的信号，然后执行附加解调以获得附加的输入数据。 叠加步骤使用多个偏移序列值将附加调制附加到第一调制信号。 偏移序列可以显示为偏移序列值的伪随机分布，并且可以包括至少一个零偏移值。 或者，附加调制信号可以形成为直接序列扩频调制，并且出现作为伪噪声分布的偏移序列。 可以使用Hadamard矩阵序列作为直接序列码。
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6.发明申请Communication system and method for receiving high priority and low priority signals 有权用于接收高优先级和低优先级信号的通信系统和方法公开(公告)号：US20090060065A1
公开(公告)日：2009-03-05
申请号：US11895806
申请日：2007-08-27
申请人： Glenn A. Walker , Eric A. DiBiaso
发明人： Glenn A. Walker , Eric A. DiBiaso
CPC分类号： H04B7/18523 , H04H20/67 , H04H20/74
摘要： A communication system and method of communicating signals to a plurality of different types of receivers is provided. At least one transmitter transmits hierarchically modulated high priority and low priority signals as a single frequency network. At least one satellite re-transmits the high priority signal in a first circularly polarized direction and the low priority signal in a second circularly polarized direction. At least one of a first receiver having a single antenna is configured to receive the high priority signal in the first circularly polarized direction and switched to receive the low priority signal in the second circularly polarized direction, and a second receiver having a first antenna is configured to receive the high priority signal in the first circularly polarized direction, and a second antenna is configured to receive the low priority signal in the second circularly polarized direction substantially simultaneously.
摘要翻译： 提供了向多个不同类型的接收机传送信号的通信系统和方法。 至少一个发射机发送分层调制的高优先级和低优先级信号作为单频网络。 至少一个卫星在第一圆偏振方向上重新发送高优先级信号，并且在第二圆偏振方向重新发送低优先级信号。 具有单个天线的第一接收机中的至少一个被配置为在第一圆偏振方向上接收高优先级信号，并且被切换以在第二圆极化方向上接收低优先级信号，并且配置具有第一天线的第二接收机 以在第一圆偏振方向上接收高优先级信号，并且第二天线被配置为基本同时接收第二圆偏振方向的低优先级信号。
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公开(公告)号：US07499696B2
公开(公告)日：2009-03-03
申请号：US10995013
申请日：2004-11-22
CPC分类号： H04B7/18523 , H04B7/18513 , H04L27/183 , H04L27/3488
摘要： The present invention involves a method for transmitting data having primary and secondary data. A first transmit signal is transmitted from a first communication satellite wherein the first transmit signal is produced when the transmitter modulates the primary and secondary data on a first carrier wave associated with the first communication satellite, with secondary data having a first polarity. A second transmit signal is transmitted from a second communication satellite wherein said second transmit signal is produced when the transmitter modulates the primary and secondary data on a second carrier wave associated with the second communication satellite with secondary data having a second polarity opposite the first polarity.
摘要翻译： 本发明涉及用于发送具有主要和次要数据的数据的方法。 从第一通信卫星发送第一发射信号，其中当发射机在与第一通信卫星相关联的第一载波上调制主要和次要数据时产生第一发射信号，次要数据具有第一极性。 从第二通信卫星发送第二发射信号，其中当发射机在与第二通信卫星相关联的第二载波上调制主要和次要数据时，产生所述第二发射信号，其次要数据具有与第一极性相反的第二极性。
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公开(公告)号：US07366246B2
公开(公告)日：2008-04-29
申请号：US10731570
申请日：2003-12-09
CPC分类号： H04B7/0857
摘要： A receiver includes a channel decoder select circuit, a plurality of communication channels, at least one maximum ratio combiner circuit, and a forward error correction circuit. The plurality of communication channels receive wireless information from channel demodulators and are in communication with respective channel decoder circuits, which are in communication with the channel decoder select circuit. The at least one maximum ratio combiner circuit receives the wireless information from the plurality of communication channels. The output of the maximum ratio combiner is communicated to the forward error correction circuit, the output of which is communicated to the channel decoder select circuit. A pseudo bit error measurement feedback signal communicated to the maximum ratio combiner from one of the plurality of channel decoder circuits. A method for finding wireless satellite signals that minimizes errors in a receiver system is also disclosed.
摘要翻译： 接收机包括信道解码器选择电路，多个通信信道，至少一个最大比组合器电路和前向纠错电路。 多个通信信道从信道解调器接收无线信息，并且与与信道解码器选择电路通信的各个信道解码器电路进行通信。 所述至少一个最大比率组合器电路从所述多个通信信道接收所述无线信息。 最大比组合器的输出被传送到前向纠错电路，其输出被传送到信道解码器选择电路。 伪比特误差测量反馈信号从多个信道解码器电路之一传送到最大比组合器。 还公开了一种用于寻找使接收机系统中的误差最小化的无线卫星信号的方法。
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公开(公告)号：US07280613B2
公开(公告)日：2007-10-09
申请号：US10946678
申请日：2004-09-22
IPC分类号： H04L27/20
CPC分类号： H04L27/3488 , H04B7/18513 , H04L27/183
摘要： The present invention involves a transmitter for transmitting two levels of data in a hierarchical transmission system. The transmitter has encoders, a modulator, an adjuster, and an up converter. The first encoder has a first output and capable of providing digital information based on a first level of data on the first output. The second encoder has a second output and is capable of providing digital information based on a second level of data on the second output. The modulator is coupled to the first encoder and has I and Q outputs. The adjuster is coupled to the modulator and second encoder and modifies signals on the I and Q outputs of the modulator to produce transmission I and transmission Q outputs. The up converter is coupled to the adjuster and is capable of transmitting broadcast radio signals based on the transmission I and transmission Q outputs. The modulator may include a root raised cosine filter and/or a QPSK modulator. The I and Q outputs of the modulator include analog I and analog Q signals. The adjuster includes an inverter, a phase rotator circuit, a combiner, and/or a limiter. The transmission I and transmission Q outputs of the adjuster include analog I and analog Q signals.
摘要翻译： 本发明涉及一种用于在分层传输系统中发送两级数据的发射机。 发射机具有编码器，调制器，调节器和升压转换器。 第一编码器具有第一输出并且能够基于第一输出上的第一级数据提供数字信息。 第二编码器具有第二输出，并且能够基于第二输出上的第二级数据提供数字信息。 调制器耦合到第一编码器并具有I和Q输出。 调节器耦合到调制器和第二编码器，并修改调制器的I和Q输出端的信号以产生传输I和传输Q输出。 上变频器耦合到调节器，并且能够基于发送I和发送Q输出来发送广播无线电信号。 调制器可以包括根升余弦滤波器和/或QPSK调制器。 调制器的I和Q输出包括模拟I和模拟Q信号。 调节器包括逆变器，相位旋转器电路，组合器和/或限幅器。 调整器的发送I和发送Q输出包括模拟I和模拟Q信号。
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10.发明授权Method to increase performance of secondary data in a hierarchical modulation scheme 有权提高分层调制方案中二次数据性能的方法公开(公告)号：US07230998B2
公开(公告)日：2007-06-12
申请号：US10847944
申请日：2004-05-18
IPC分类号： H04L27/20
CPC分类号： H04L27/3466 , H04B7/18513 , H04L27/3488
摘要： The present invention provides a receiver for use in a SDAR system, the receiver including a receiving unit having satellite signal detection means for detecting a first transmit signal transmitted from a first communication satellite and a second transmit signal transmitted from a second communication satellite, the first transmit signal produced when the transmitter modulates a primary data stream with a secondary data stream on a first carrier wave associated with the first communication satellite and the second transmit signal produced when the transmitter modulates the primary and secondary data streams on a second carrier wave associated with the second communication satellite; and at least one demodulator coupled to the receiving unit and configured to demodulate the at least one of the first and the second transmit signals.
摘要翻译： 本发明提供了一种在SDAR系统中使用的接收机，该接收机包括具有卫星信号检测装置的接收单元，用于检测从第一通信卫星发射的第一发射信号和从第二通信卫星发送的第二发射信号，第一 当发射机利用辅助数据流在与第一通信卫星相关联的第一载波上调制主数据流时产生的发射信号和当发射机在与第一通信卫星相关联的第二载波上调制主要和次要数据流时产生的第二发射信号 第二通信卫星; 以及耦合到所述接收单元并被配置为解调所述第一和第二发射信号中的至少一个的至少一个解调器。
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