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公开(公告)号：US08972359B2
公开(公告)日：2015-03-03
申请号：US11303990
申请日：2005-12-19
CPC分类号： H04L1/0009 , H03M7/30 , H04L1/0028 , H04W88/08
摘要： A method and apparatus for compression of complex data signals within a telecommunications base station. The method includes representing a sample of a complex value discrete time signal using 2(L−N)−S mantissa bits and 2N+S exponent bits to realize peak output signal to noise ratios over a wider dynamic range compared to a conventional L-bit uniform quantization format. The increases in dynamic range and peak output SNR is achieved without increasing the average number of data bits per sample and with relatively simple computational effort.
摘要翻译： 一种用于压缩电信基站内复杂数据信号的方法和装置。 该方法包括使用2（L-N）-S尾数位和2N + S指数位来表示复值离散时间信号的样本，以在较宽的动态范围内实现峰值输出信噪比，与传统的L位 均匀量化格式。 实现动态范围和峰值输出SNR的增加，而不增加每个样本的平均数据位数，并以相对简单的计算工作量。
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公开(公告)号：US20090041109A1
公开(公告)日：2009-02-12
申请号：US11303990
申请日：2005-12-19
IPC分类号： H04B1/66
CPC分类号： H04L1/0009 , H03M7/30 , H04L1/0028 , H04W88/08
摘要： A method and apparatus for compression of complex data signals within a telecommunications base station. The method includes representing a sample of a complex value discrete time signal using 2(L−N)−S mantissa bits and 2N+S exponent bits to realize peak output signal to noise ratios over a wider dynamic range compared to a conventional L-bit uniform quantization format. The increases in dynamic range and peak output SNR is achieved without increasing the average number of data bits per sample and with relatively simple computational effort.
摘要翻译： 一种用于压缩电信基站内复杂数据信号的方法和装置。 该方法包括使用2（LN）-S尾数位和2N + S指数位来表示复数值离散时间信号的样本，以在较宽的动态范围内实现峰值输出信噪比，与传统的L位均匀量化相比 格式。 实现动态范围和峰值输出SNR的增加，而不增加每个样本的平均数据位数，并以相对简单的计算工作量。
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公开(公告)号：US08412124B2
公开(公告)日：2013-04-02
申请号：US13190660
申请日：2011-07-26
IPC分类号： H04B1/02
CPC分类号： H04L27/2614 , H03F1/3282 , H03F3/189 , H03F3/245 , H03F2200/111 , H03F2200/336 , H03F2200/429 , H03G7/007 , H04L25/03343
摘要： Peak power reduction in transmit chains of multi-band radiocommunication devices is performed. By using knowledge of the phase transformations which occur at the upconverter to determine how baseband signal samples will combine at the higher (upconverted) frequency, peak prediction and corresponding baseband signal modification can be performed in a way that reduces peak power of the combined signal.
摘要翻译： 执行多频带无线电通信装置的发射链中的峰值功率降低。 通过使用在上变频器上发生的相变的知识来确定基带信号样本将如何在较高（上变频）频率下组合，可以以降低组合信号的峰值功率的方式执行峰值预测和对应的基带信号修改。
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公开(公告)号：US20130027090A1
公开(公告)日：2013-01-31
申请号：US13190660
申请日：2011-07-26
CPC分类号： H04L27/2614 , H03F1/3282 , H03F3/189 , H03F3/245 , H03F2200/111 , H03F2200/336 , H03F2200/429 , H03G7/007 , H04L25/03343
摘要： Peak power reduction in transmit chains of multi-band radiocommunication devices is performed. By using knowledge of the phase transformations which occur at the upconverter to determine how baseband signal samples will combine at the higher (upconverted) frequency, peak prediction and corresponding baseband signal modification can be performed in a way that reduces peak power of the combined signal.
摘要翻译： 执行多频带无线电通信装置的发射链中的峰值功率降低。 通过使用在上变频器上发生的相变的知识来确定基带信号样本将如何在较高（上变频）频率下组合，可以以降低组合信号的峰值功率的方式执行峰值预测和对应的基带信号修改。
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5.发明授权公开(公告)号：US08331466B2
公开(公告)日：2012-12-11
申请号：US12245047
申请日：2008-10-03
申请人： Ning Guo , Neil McGowan , Bradley John Morris
发明人： Ning Guo , Neil McGowan , Bradley John Morris
IPC分类号： H04K1/10
CPC分类号： H04L27/2623 , H04L27/2624
摘要： A method and system adaptively reduce a peak-to-average power ratio in a communication system. Energy is clipped from at least one peak of a modulated signal. The modulated signal includes a plurality of sub-carriers. At least one data sub-carrier is adaptively selected for peak-to-average power ratio reduction use based on known scheduling information. The clipped energy is distributed among at least one data sub-carrier.
摘要翻译： 一种方法和系统自适应地降低通信系统中的峰均功率比。 能量被从调制信号的至少一个峰限制。 调制信号包括多个子载波。 基于已知的调度信息，至少一个数据子载波被自适应地选择用于峰值到平均功率比减少使用。 剪切的能量分布在至少一个数据子载波中。
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公开(公告)号：US08948291B2
公开(公告)日：2015-02-03
申请号：US13130211
申请日：2010-11-18
摘要： A radio communication apparatus operable over a wide range of frequencies including a signal processing device is provided. The device performs an analog to digital conversion at a predetermined sample rate independent of a selected frequency band within the wide range of frequencies to generate a digital signal, and digitally processes the digital signal to output a data signal at baseband associated with the selected frequency band.
摘要翻译： 提供了可在包括信号处理装置的宽频率范围内工作的无线电通信装置。 该器件以宽频率范围内的所选频带独立于预定采样速率进行模数转换，以产生数字信号，并对数字信号进行数字处理以输出与所选频带相关联的数据信号 。
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7.发明授权公开(公告)号：US08576943B2
公开(公告)日：2013-11-05
申请号：US13228926
申请日：2011-09-09
CPC分类号： H03F1/3247 , H03F1/3241 , H03F1/3252 , H04B1/0475 , H04B2001/0425
摘要： A multi-band signal is generated by combining two or more input signals separated in frequency. The input signals are combined either before or after predistortion depending on the bandwidth of the multi-band signal. If the bandwidth of the multi-band signal is less than a predetermined bandwidth threshold, the input signals are combined and predistortion is applied to the combined signal to generate the multi-band signal. If the bandwidth of the multi-band signal is greater than the bandwidth threshold, the individual input signals are predistorted and subsequently combined to generate the multi-band signal.
摘要翻译： 通过组合在频率上分离的两个或多个输入信号来产生多频带信号。 根据多频带信号的带宽，输入信号在预失真之前或之后组合。 如果多频带信号的带宽小于预定带宽阈值，则组合输入信号，并将预失真应用于组合信号以产生多频带信号。 如果多频带信号的带宽大于带宽阈值，则各个输入信号被预失真并随后组合以产生多频带信号。
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公开(公告)号：US20120275543A1
公开(公告)日：2012-11-01
申请号：US13541348
申请日：2012-07-03
IPC分类号： H04L25/49
CPC分类号： H04L25/49 , H04L27/2624
摘要： A communication system comprising signal processing circuitry and up-conversion circuitry. The signal processing circuitry is configured to: i) generate a first signal of a first modulation type and a second signal of a second modulation type; ii) combine the first and second signals to form a combined input signal; iii) generate peak reduction distortion based on the combined input signal; iv) select a portion of the peak reduction distortion that corresponds to a first frequency band; and v) apply the selected portion of the peak reduction distortion in the first frequency band of the combined input signal to provide a combined output signal. The up-conversion circuitry up-converts the combined output signal to an RF signal for transmission.
摘要翻译： 一种包括信号处理电路和上转换电路的通信系统。 信号处理电路被配置为：i）产生第一调制类型的第一信号和第二调制类型的第二信号; ii）组合第一和第二信号以形成组合的输入信号; iii）基于组合的输入信号产生峰值减小失真; iv）选择对应于第一频带的峰值减小失真的一部分; 以及v）将组合输入信号的第一频带中的峰值减小失真的选定部分应用于组合输出信号。 上变频电路将组合输出信号上变频为RF信号进行传输。
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公开(公告)号：US20120128082A1
公开(公告)日：2012-05-24
申请号：US13130211
申请日：2010-11-18
IPC分类号： H04L27/00
摘要： A radio communication apparatus operable over a wide range of frequencies including a signal processing device is provided. The device performs an analog to digital conversion at a predetermined sample rate independent of a selected frequency band within the wide range of frequencies to generate a digital signal, and digitally processes the digital signal to output a data signal at baseband associated with the selected frequency band.
摘要翻译： 提供了可在包括信号处理装置的宽频率范围内工作的无线电通信装置。 该器件以宽频率范围内的所选频带独立于预定采样速率进行模数转换，以产生数字信号，并对数字信号进行数字处理以输出与所选频带相关联的数据信号 。
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公开(公告)号：US20120119811A1
公开(公告)日：2012-05-17
申请号：US13119165
申请日：2010-11-16
申请人： Chunlong Bai , Bradley John Morris , Brian Lehman
发明人： Chunlong Bai , Bradley John Morris , Brian Lehman
IPC分类号： H03K5/08
CPC分类号： H03F1/3252 , H03F1/3247
摘要： Digital predistorter circuits with selectable basis function configurations are described. In some embodiments, an input scaling block is introduced prior to a basis function generator structure. The input scaling factor is based on the input signal's average power. In other embodiments, configurable connection coefficients are used to construct the orthogonal basis functions. Multiple sets of tap weights for the predistorter are maintained, each set corresponding to a given basis function configuration. In an example method for pre-distorting an input signal to compensate for distortion introduced by an electronic device, a statistic characterizing the input signal is calculated, and one of a pre-determined set of basis function configurations is selected, based on the statistic. A set of pre-distortion model weights corresponding to the selected basis function configuration are determined, after which the selected basis function configuration and the corresponding set of pre-distortion model weights are applied to the input signal.
摘要翻译： 描述了具有可选基础功能配置的数字预失真器电路。 在一些实施例中，在基函数发生器结构之前引入输入缩放块。 输入比例因子基于输入信号的平均功率。 在其他实施例中，可配置连接系数用于构建正交基函数。 维护用于预失真器的多组抽头权重，每组对应于给定的基础功能配置。 在用于对输入信号进行预失真以补偿由电子设备引入的失真的示例性方法中，计算表征输入信号的统计量，并且基于统计量来选择预定的一组基函数配置中的一个。 确定与选择的基本功能配置相对应的一组预失真模型权重，之后将所选择的基本功能配置和相应的一组预失真模型权重应用于输入信号。
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