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公开(公告)号：US20100259433A1
公开(公告)日：2010-10-14
申请号：US12086544
申请日：2008-05-06
IPC分类号： H03M1/12
CPC分类号： H04B7/086 , H04B7/0617 , H04B7/18515
摘要： A digital signal processor that is required to process a large number of narrowband analog input or output signals. Analog processing is performed to combine multiple analog signals together (with non-overlapping frequency bands) into a composite signal which is fed to a single analog to digital converter. These signals come from different sources and would in a conventional implementation use individual converters. Analog signal processing is used outside of the digital signal processor and digital processing is used inside to enable the original analog signals to be reconstructed in the digital domain in the same format as if individual converters have been used. A similar technique can be applied to digital to analog conversion interfaces where a digital combining operation is performed to combine digital sub-band signals into a single composite signal, prior to input to a single digital-to-analog (DAC) converter for conversion to the analog domain and subsequently to an analog splitter device for separation into a plurality of analog signals. Hence, the technique can be implemented in both transmitter and receiver systems.
摘要翻译： 处理大量窄带模拟输入或输出信号所需的数字信号处理器。 执行模拟处理以将多个模拟信号（非重叠频带）组合成复合信号，该复合信号被馈送到单个模数转换器。 这些信号来自不同的来源，并且在常规实施中将使用单独的转换器。 模拟信号处理在数字信号处理器之外使用，数字处理在内部使用，以使原始模拟信号在数字域中以与使用各个转换器相同的格式被重构。 类似的技术可以应用于数字到模拟转换接口，其中在将数字组合操作执行以将数字子带信号组合成单个复合信号之前，在输入到单个数模（DAC）转换器之前将其转换为 模拟域和随后的模拟分配器装置，用于分离成多个模拟信号。 因此，该技术可以在发射机和接收机系统中实现。
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公开(公告)号：US08224387B2
公开(公告)日：2012-07-17
申请号：US12158278
申请日：2007-12-17
申请人： Andrew Mark Bishop
发明人： Andrew Mark Bishop
IPC分类号： H04M1/00 , H04B1/38 , H04B1/06 , H04B7/00 , H04B7/10 , H04B1/02 , H04K1/10 , H04L27/06 , H04L25/49
CPC分类号： H04B7/18515 , H04B7/0617 , H04B7/086
摘要： A beamforming system that can be used for both receive and transmit beamforming is provided. The system receives samples of a number of signals, each sample containing a band of frequencies and routes all sampled signals associated with the same beamformed frequency band to a predetermined processing block. A predetermined number of the routed sampled signals are selected sequentially according to predetermined criteria, weighted and accumulated to form a composite signal. Individual signals are then selected from the composite signal and routed to an appropriate output. The system uses a much smaller number of weighting functions than conventionally required, with processing for a single frequency being performed in the same processing block. This reduces the complexity of beamforming processing substantially and simplifies frequency reuse. In addition a single DSP design that works for both transmit and receive beamforming can be implemented.
摘要翻译： 提供了可用于接收和发送波束成形的波束成形系统。 系统接收多个信号的样本，每个样本包含频带，并将与相同波束形成的频带相关联的所有采样信号路由到预定的处理块。 根据预定标准依次选择预定数量的路由采样信号，加权和累积以形成复合信号。 然后从复合信号中选择单个信号，并将其路由到适当的输出。 该系统使用比常规要求少得多的加权函数，对于在相同处理块中执行单个频率的处理。 这大大降低了波束成形处理的复杂度，并简化了频率重用。 此外，可以实现用于发射和接收波束成形的单个DSP设计。
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公开(公告)号：US08604975B2
公开(公告)日：2013-12-10
申请号：US12382798
申请日：2009-03-24
CPC分类号： H04B7/18515 , H01Q3/267 , H04B7/18519 , H04B7/2041 , H04B17/21
摘要： There is provided an apparatus for calibrating a multi-beam satellite system comprising a beam forming network providing a plurality of signal paths, the apparatus comprising a calibration processor for determining the phase and amplitude shift of a test path relative to a reference path, the calibration processor being configured to determine the phase and amplitude shifts of the test path relative to the reference path for at least two calibration tones of at least two different frequencies to allow a phase and amplitude offset of the test path for a signal of any frequency within an operational frequency range of the multi-beam satellite system to be calculated.
摘要翻译： 提供了一种用于校准多波束卫星系统的装置，其包括提供多个信号路径的波束形成网络，该装置包括用于确定测试路径相对于参考路径的相位和幅度偏移的校准处理器，校准 处理器被配置为针对至少两个不同频率的至少两个校准音调确定测试路径相对于参考路径的相位和幅度偏移，以允许测试路径的相位和幅度偏移对于在 要计算的多光束卫星系统的工作频率范围。
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公开(公告)号：US20100164782A1
公开(公告)日：2010-07-01
申请号：US12382798
申请日：2009-03-24
IPC分类号： G01S7/40
CPC分类号： H04B7/18515 , H01Q3/267 , H04B7/18519 , H04B7/2041 , H04B17/21
摘要： There is provided an apparatus for calibrating a multi-beam satellite system comprising a beam forming network providing a plurality of signal paths, the apparatus comprising a calibration processor for determining the phase and amplitude shift of a test path of the plurality of signal paths by correlating a calibration tone extracted from the test path with a reference calibration signal, the calibration processor being configured to determine the phase and amplitude shifts of the test path for at least two calibration tones of at least two different frequencies. The apparatus also comprises means for applying a correction based on the determined phase and amplitude shift to the test path in the beam forming network. The two calibration tones of at least two different frequencies may be calibration tones injected at two different frequencies but also calibration tones translated into two different frequencies by the beam forming network. The invention allows a phase and amplitude shift for any path through the beam forming network to be calculated for any frequency in an operational frequency range of the multi-beam satellite system and corrections to be applied to form or interpret the required downlink or uplink beams of the multi-beam satellite system.
摘要翻译： 提供了一种用于校准多波束卫星系统的装置，其包括提供多个信号路径的波束形成网络，该装置包括校准处理器，用于通过相关来确定多个信号路径的测试路径的相位和幅度偏移 由所述测试路径提取的具有参考校准信号的校准音，所述校准处理器被配置为确定至少两个不同频率的至少两个校准音调的所述测试路径的相位和幅度偏移。 该装置还包括用于基于所确定的相位和幅度偏移将校正应用于波束形成网络中的测试路径的装置。 至少两个不同频率的两个校准音调可以是以两个不同频率注入的校准音调，但也可以由波束形成网络转换成两个不同频率的校准音调。 本发明允许为在多波束卫星系统的工作频率范围内的任何频率计算通过波束形成网络的任何路径的相位和幅度偏移，并且将要应用校正以形成或解释所需的下行链路或上行链路波束 多波束卫星系统。
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公开(公告)号：US20080268775A1
公开(公告)日：2008-10-30
申请号：US12158278
申请日：2007-12-17
申请人： Andrew Mark Bishop
发明人： Andrew Mark Bishop
CPC分类号： H04B7/18515 , H04B7/0617 , H04B7/086
摘要： A beamforming system that can be used for both receive and transmit beamforming is provided. The system receives samples of a number of signals, each sample containing a band of frequencies and routes all sampled signals associated with the same beamformed frequency band to a predetermined processing block. A predetermined number of the routed sampled signals are selected sequentially according to predetermined criteria, weighted and accumulated to form a composite signal. Individual signals are then selected from the composite signal and routed to an appropriate output. The system uses a much smaller number of weighting functions than conventionally required, with processing for a single frequency being performed in the same processing block. This reduces the complexity of beamforming processing substantially and simplifies frequency reuse. In addition a single DSP design that works for both transmit and receive beamforming can be implemented.
摘要翻译： 提供了可用于接收和发送波束成形的波束成形系统。 系统接收多个信号的样本，每个样本包含频带，并将与相同波束形成的频带相关联的所有采样信号路由到预定的处理块。 根据预定标准依次选择预定数量的路由采样信号，加权和累积以形成复合信号。 然后从复合信号中选择单个信号，并将其路由到适当的输出。 该系统使用比常规要求少得多的加权函数，对于在相同处理块中执行单个频率的处理。 这大大降低了波束成形处理的复杂度，并简化了频率重用。 此外，可以实现用于发射和接收波束成形的单个DSP设计。
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