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1.发明授权公开(公告)号：US08285221B2
公开(公告)日：2012-10-09
申请号：US12550432
申请日：2009-08-31
IPC分类号： H04W24/00
CPC分类号： H01Q21/0025 , H01Q3/267 , H01Q21/28 , H04B17/12 , H04W52/42
摘要： A method, a system and a device for implementing a scalable, self-calibrating and configuring, radio frequency head in a wireless base station that performs phase calibration for coherent combining of a pair of transmitter outputs. Configurable Antenna Calibration (CAC) logic initiates phase calibration for coherent combining by selecting a first configuration and triggering the transmission of a reference signal by radio frequency (RF) transmitters using different sub-carriers. The CAC logic generates a vector of phase values by comparing the reference signal with the respective signals received by a calibration receiver. The CAC logic also generates calibration coefficients for coherent combining by normalizing the phase values. In addition, a passive combiner mechanism is employed to implement coherent combining. The CAC logic performs calibration of smart antennas by providing calibration coefficients via a second configuration which utilizes both a calibration transmitter and the calibration receiver.
摘要翻译： 一种用于在无线基站中实现可扩展的，自校准和配置的射频头的方法，系统和设备，其执行用于一对发射机输出的相干组合的相位校准。 可配置天线校准（CAC）逻辑通过选择第一配置并通过射频（RF）发射机使用不同的子载波来触发参考信号的传输来启动相位校准。 CAC逻辑通过将参考信号与由校准接收器接收的相应信号进行比较来产生相位值的矢量。 CAC逻辑还通过对相位值进行归一化来产生用于相干组合的校准系数。 此外，采用无源组合器机制来实现相干组合。 CAC逻辑通过使用校准发射器和校准接收器的第二配置提供校准系数来执行智能天线的校准。
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公开(公告)号：US5495505A
公开(公告)日：1996-02-27
申请号：US630708
申请日：1990-12-20
申请人： Thomas J. Kundmann
发明人： Thomas J. Kundmann
CPC分类号： G06F1/0328
摘要： A direct digital frequency synthesizer increases the frequency resolution of the analog output signal by using fractionalization techniques. The best integer value I.sub.FR of a digital signal is determined and the next integer value I.sub.FR +1 of a digital signal is used to determine a weighted fractionalized value of the digital signal. The fractionalized value of the digital signal is used to synthesize the analog output signal having increased frequency resolution. In addition, IFR and IFR+1 are optimally distributed during the weighting process to ensure a minimum cumulative phase error.
摘要翻译： 直接数字频率合成器通过使用分数化技术来增加模拟输出信号的频率分辨率。 确定数字信号的最佳整数值IFR，并且使用数字信号的下一个整数值IFR + 1来确定数字信号的加权分数值。 数字信号的分数值用于合成具有增加的频率分辨率的模拟输出信号。 此外，IFR和IFR + 1在加权过程中是最佳分布的，以确保最小累积相位误差。
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3.发明申请SCALABLE SELF-CALIBRATING AND CONFIGURING RADIO FREQUENCY HEAD FOR A WIRELESS COMMUNICATION SYSTEM 失效可扩展自动校准和配置无线通信系统的无线电频率头公开(公告)号：US20110053646A1
公开(公告)日：2011-03-03
申请号：US12550432
申请日：2009-08-31
IPC分类号： H04M1/00
CPC分类号： H01Q21/0025 , H01Q3/267 , H01Q21/28 , H04B17/12 , H04W52/42
摘要： A method, a system and a device for implementing a scalable, self-calibrating and configuring, radio frequency head in a wireless base station that performs phase calibration for coherent combining of a pair of transmitter outputs. Configurable Antenna Calibration (CAC) logic initiates phase calibration for coherent combining by selecting a first configuration and triggering the transmission of a reference signal by radio frequency (RF) transmitters using different sub-carriers. The CAC logic generates a vector of phase values by comparing the reference signal with the respective signals received by a calibration receiver. The CAC logic also generates calibration coefficients for coherent combining by normalizing the phase values. In addition, a passive combiner mechanism is employed to implement coherent combining. The CAC logic performs calibration of smart antennas by providing calibration coefficients via a second configuration which utilizes both a calibration transmitter and the calibration receiver.
摘要翻译： 一种用于在无线基站中实现可扩展的，自校准和配置的射频头的方法，系统和设备，其执行用于一对发射机输出的相干组合的相位校准。 可配置天线校准（CAC）逻辑通过选择第一配置并通过射频（RF）发射机使用不同的子载波来触发参考信号的传输来启动相位校准。 CAC逻辑通过将参考信号与由校准接收器接收的相应信号进行比较来产生相位值的矢量。 CAC逻辑还通过对相位值进行归一化来产生用于相干组合的校准系数。 此外，采用无源组合器机制来实现相干组合。 CAC逻辑通过使用校准发射器和校准接收器的第二配置提供校准系数来执行智能天线的校准。
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4.发明申请OPTIMIZED DIGITAL CORRECTION FOR POWER AMPLIFIER DISTORTION AND QUADRATURE ERROR 审中-公开用于功率放大器失真的优化数字校正和正交误差公开(公告)号：US20100111221A1
公开(公告)日：2010-05-06
申请号：US12261534
申请日：2008-10-30
IPC分类号： H04L25/03
CPC分类号： H04L27/364
摘要： A method, wireless device, and wireless communication system manage quadrature and non-linear distortions in a transmitter system (100). A transmit data signal (235) is generated from a baseband data signal (202). The transmit data signal (235) can include one or more non-linear and/or quadrature distortions. An RF receiver circuit (238) receives the transmit data signal (235). A received signal, from the RF receiver circuit (238), includes a digital representation of the received transmit data signal (235). The received signal is statistically analyzed (404). A representation of each distortion of the one or more distortions is identified in the transmit data signal (235). At least one information signal (268) including an information set of distortion adjustments is generated. Distortion of the transmit data signal (235) is adjusted (410) based on the information set to reduce the one or more distortions in the transmit data signal (235).
摘要翻译： 一种方法，无线设备和无线通信系统管理发射机系统（100）中的正交和非线性失真。 从基带数据信号（202）生成发送数据信号（235）。 发射数据信号（235）可以包括一个或多个非线性和/或正交失真。 RF接收机电路（238）接收发射数据信号（235）。 来自RF接收器电路（238）的接收信号包括所接收的发送数据信号（235）的数字表示。 收到的信号进行统计分析（404）。 在发送数据信号（235）中识别出一个或多个失真的每个失真的表示。 产生包括失真调整的信息集的至少一个信息信号（268）。 基于设置的信息来调整发送数据信号（235）的失真（410）以减少发送数据信号（235）中的一个或多个失真。
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5.发明授权Apparatus and method for modulating and digitally predistorting a signal in a multiple modulation schemes 有权用于在多个调制方案中调制和数字预失真信号的装置和方法公开(公告)号：US07362820B2
公开(公告)日：2008-04-22
申请号：US11131714
申请日：2005-05-18
IPC分类号： H04K1/02
CPC分类号： H04L27/0008 , H03F1/3247 , H03F1/3282 , H03F2200/165 , H03F2200/465 , H03F2201/3227 , H03F2201/3233 , H04L27/2017 , H04L27/2067 , H04L27/368 , H04W28/18
摘要： A programmable modulator (100) is programmable to operate in either of a GMSK or 8PSK mode. When operating in a GMSK mode, a signal modulating circuit 105 receives (210) a bit stream (110), maps the bit stream (110) to a phase value in complex I, Q form and applies a progressive rotation to the phase value according to GMSK specifications. The output (140) is filtered by a filter circuit (135), preferably using a complex Finite Impulse Response (FIR) filter using the standard coefficients for an 8PSK modulation to create (215) an approximate GMSK output (165). A GMSK correction circuit (150) determines a correction term that is added to the filter circuit output (165) so as to correct amplitude variations to allow the output to conform to GSM/EDGE standards. The same modulator (100) may be programmed to operate in an 8PSK mode with linear predistortion.
摘要翻译： 可编程调制器（100）可编程以在GMSK或8PSK模式中工作。 当在GMSK模式下操作时，信号调制电路105接收（210）比特流（110），将比特流（110）映射到复数I，Q形式的相位值，并根据 到GMSK规格。 输出（140）由滤波器电路（135）滤波，优选地使用复数有限脉冲响应（FIR）滤波器，使用用于8PSK调制的标准系数来创建（215）近似GMSK输出（165）。 GMSK校正电路（150）确定添加到滤波器电路输出（165）的校正项，以校正幅度变化，以允许输出符合GSM / EDGE标准。 可以将相同的调制器（100）编程为以具有线性预失真的8PSK模式操作。
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6.发明申请METHOD AND DEVICE FOR INCREASING CAPACITY OF TDD WIRELESS COMMUNICATION SYSTEMS 审中-公开用于增加TDD无线通信系统容量的方法和设备公开(公告)号：US20080080406A1
公开(公告)日：2008-04-03
申请号：US11536813
申请日：2006-09-29
申请人： Neil R. Peplinski , William K. Doss , Thomas J. Kovarik , Thomas J. Kundmann , Alan P. Rottinghaus
发明人： Neil R. Peplinski , William K. Doss , Thomas J. Kovarik , Thomas J. Kundmann , Alan P. Rottinghaus
CPC分类号： H04B7/2643
摘要： An access point (108) in a dual-frequency TDD communication system (100) includes a transceiver (122) that transmits information to a first group of subscriber devices (104a-n) at a first frequency (f1) and contemporaneously receives information from a second group of a subscriber devices (106a-n) at a second frequency (f2) during at least a portion of a period of time (T1). The access point (108) also transmits information to the second group of subscriber devices (106a-n) at the second frequency (f2) and contemporaneously receives information from the first group of subscriber devices (104a-n) at the first frequency (f1) during at least a portion of a second period of time (T3). A method for performing a dual-frequency communication scheme is also provided.
摘要翻译： 双频TDD通信系统（100）中的接入点（108）包括收发信机（122），其以第一频率（f 1 SUB）向第一组订户设备（104a）发送信息 >）并且在一段时间（T 1）的至少一部分期间同时以第二频率（f 2> 2）从第二组用户设备（106a）接收信息。 接入点（108）还以第二频率（f 2> 2）向第二组用户设备（106a）发送信息，同时从第一组用户设备（104a）接收信息， 在第二时间段（T 3）的至少一部分期间以第一频率（f 1> 1）进行。 还提供了一种用于执行双频通信方案的方法。
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公开(公告)号：US08755447B2
公开(公告)日：2014-06-17
申请号：US12975730
申请日：2010-12-22
IPC分类号： H04B14/06
CPC分类号： H03M3/50 , H03M7/3026 , H04L27/364
摘要： A communications system, e.g., a wireless microphone, incorporates a quadrature modulator system to reduce power consumption with respect to traditional approaches and is general in nature to support any two-dimensional digital technique. The quadrature modulator system comprises different subsystems, including a digital-analog transformation circuit, a baseband filter, and a quadrature modulator. The digital-analog transformation circuit converts discrete time samples to a continuous time signal, and further includes an oversampling noise-shaping modulator such as a sigma-delta modulator. The baseband filter then removes out-of-band energy including sampling images and quantization noise. Some of the circuit components may comprise discrete devices that may result in a reduction of power consumption for the quadrature modulator system. Alternatively, some or all of the circuit components may be incorporated in a single electronic device. For example, an in-phase/quadrature-phase (I/Q) converter and oversampling noise-shaping modulator may be implemented within one field-programmable gate array.
摘要翻译： 诸如无线麦克风的通信系统包括正交调制器系统以相对于传统方法降低功耗，并且本质上是通常支持任何二维数字技术。 正交调制器系统包括不同的子系统，包括数模转换电路，基带滤波器和正交调制器。 数字 - 模拟变换电路将离散时间样本转换为连续时间信号，并且还包括过采样噪声整形调制器，例如Σ-Δ调制器。 基带滤波器然后去除包括采样图像和量化噪声在内的带外能量。 一些电路组件可以包括可能导致正交调制器系统的功率消耗降低的分立器件。 或者，一些或全部电路组件可以并入单个电子设备中。 例如，可以在一个现场可编程门阵列内实现同相/正交相位（I / Q）转换器和过采样噪声整形调制器。
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公开(公告)号：US20120163627A1
公开(公告)日：2012-06-28
申请号：US12975730
申请日：2010-12-22
IPC分类号： H04B15/00
CPC分类号： H03M3/50 , H03M7/3026 , H04L27/364
摘要： A communications system, e.g., a wireless microphone, incorporates a quadrature modulator system to reduce power consumption with respect to traditional approaches and is general in nature to support any two-dimensional digital technique. The quadrature modulator system comprises different subsystems, including a digital-analog transformation circuit, a baseband filter, and a quadrature modulator. The digital-analog transformation circuit converts discrete time samples to a continuous time signal, and further includes an oversampling noise-shaping modulator such as a sigma-delta modulator. The baseband filter then removes out-of-band energy including sampling images and quantization noise. Some of the circuit components may comprise discrete devices that may result in a reduction of power consumption for the quadrature modulator system. Alternatively, some or all of the circuit components may be incorporated in a single electronic device. For example, an in-phase/quadrature-phase (I/Q) converter and oversampling noise-shaping modulator may be implemented within one field-programmable gate array.
摘要翻译： 诸如无线麦克风的通信系统包括正交调制器系统以相对于传统方法降低功耗，并且本质上是通常支持任何二维数字技术。 正交调制器系统包括不同的子系统，包括数模转换电路，基带滤波器和正交调制器。 数字 - 模拟变换电路将离散时间样本转换为连续时间信号，并且还包括过采样噪声整形调制器，例如Σ-Δ调制器。 基带滤波器然后去除包括采样图像和量化噪声在内的带外能量。 一些电路组件可以包括可能导致正交调制器系统的功率消耗降低的分立器件。 或者，一些或全部电路组件可以并入单个电子设备中。 例如，可以在一个现场可编程门阵列内实现同相/正交相位（I / Q）转换器和过采样噪声整形调制器。
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9.发明授权Method and apparatus for detecting bad frames of information in a communication system 失效用于检测通信系统中的不良信息帧的方法和装置
公开(公告)号：US6092230A
公开(公告)日：2000-07-18
申请号：US121809
申请日：1993-09-15
CPC分类号： H04L1/007 , H03M13/00 , H04L1/0045 , H04L1/201 , H04L1/208
摘要： A communication system implements detection of bad frames of information by utilizing multiple bit correction thresholds. Equipment used within the communication system adapts to different signaling environments by dynamically altering the bit correction threshold based on a history of the number of consecutive bad frames of information that have been previously erased and the number of bits corrected by a channel decoder (202). By implementing this dynamic bit correction threshold, sufficient bad frame indication (BFI) detection and receiver sensitivity can be obtained simultaneously, which results in an improved perceived audio quality to the end user.
摘要翻译： 通信系统通过利用多个比特校正阈值来实现对坏帧信息的检测。 在通信系统中使用的设备通过基于先前已被擦除的连续坏信息的数量的历史和由信道解码器（202）校正的比特数来动态地改变比特校正阈值来适应不同的信令环境。 通过实现这种动态位校正阈值，可以同时获得足够的坏帧指示（BFI）检测和接收机灵敏度，这样可以使最终用户的感知音质提高。
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