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51. 发明授权

US08878603B2 Method and device for detecting PWM wave 有权
标题翻译： PWM波检测方法及装置
公开(公告)号：US08878603B2
公开(公告)日：2014-11-04
申请号：US13530818
申请日：2012-06-22
申请人： Yu Liu , Xiaofeng Shen , Jianhua Zhang
发明人： Yu Liu , Xiaofeng Shen , Jianhua Zhang
IPC分类号： H03D3/00 , H03K9/08 , G01R29/027
CPC分类号： G01R29/0273 , G01R29/02
摘要： A device for detecting a PWM wave, comprising: a PWM wave generating module, configured to generate the PWM wave; a detecting module coupled to the PWM wave generating module, configured to receive the PWM wave and to determine an electric level of the PWM wave; a timer coupled to the detecting module, configured to start a counting when the detecting module receives the PWM wave, and to interrupt the counting when the counting reaches a predetermined value, the detecting module determining whether the electric level of the PWM wave is a high electric level or a low electric level when the counting is interrupted; and a calculating module coupled to the detecting module, configured to calculate a duty ratio of the PWM wave based on a number of high electric level and a number of low electric level of the PWM wave determined within one period of the PWM wave.
摘要翻译：一种用于检测PWM波的装置，包括：PWM波发生模块，用于产生PWM波; 耦合到所述PWM波发生模块的检测模块，被配置为接收所述PWM波并确定所述PWM波的电平; 耦合到所述检测模块的定时器，被配置为当所述检测模块接收到所述PWM波时开始计数，并且当所述计数达到预定值时中断所述计数，所述检测模块确定所述PWM波的电平是否为高计数中断时的电平或低电平; 以及耦合到所述检测模块的计算模块，被配置为基于在所述PWM波的一个周期内确定的所述PWM电波的数量和所述PWM波的低电平的数量来计算所述PWM波的占空比。

52. 发明授权

US08811538B1 IQ error correction 有权
标题翻译：智商纠错
公开(公告)号：US08811538B1
公开(公告)日：2014-08-19
申请号：US13832432
申请日：2013-03-15
申请人： Research in Motion Limited
发明人： Tajinder Manku
IPC分类号： H03D3/00
CPC分类号： H03D3/009
摘要： In a radio receiver having first and second mixers that mix a received communication signal to produce quadrature I and Q signals, measuring an output value of the I and Q signals. At a programmed processor: evaluating symmetry in the I and Q signals by calculating a symmetry test value; iteratively testing gain and phase shift correction values by applying the gain and phase shift correction values to the I and Q signals to identify a pair of gain and phase shift correction values that produces an improved symmetry test value; selecting the pair of gain and phase shift correction values; and applying the selected pair of gain and phase shift correction values to the I and Q signals from the first and second mixers. This abstract is not to be considered limiting.
摘要翻译：在具有混合接收到的通信信号以产生正交I和Q信号的第一和第二混频器的无线电接收机中，测量I和Q信号的输出值。在编程处理器中：通过计算对称性测试值来评估I和Q信号中的对称性; 通过将增益和相移校正值应用于I和Q信号来迭代地测试增益和相移校正值，以识别产生改进的对称性测试值的一对增益和相移校正值; 选择一对增益和相移校正值; 以及将所选择的一对增益和相移校正值应用于来自第一和第二混频器的I和Q信号。这个摘要不被认为是限制性的。

53. 发明授权

US08737533B2 Method and arrangements for estimating IQ-imbalance 有权
标题翻译：估计智商不平衡的方法和安排
公开(公告)号：US08737533B2
公开(公告)日：2014-05-27
申请号：US12937069
申请日：2009-04-08
申请人： Niklas Andgart , Leif Wilhelmsson
发明人： Niklas Andgart , Leif Wilhelmsson
IPC分类号： H03D3/00
CPC分类号： H04L27/3863 , H04L5/0007 , H04L5/0048 , H04L5/0066 , H04L25/0226 , H04L25/0228 , H04L25/0236 , H04L27/2613 , H04L27/2647
摘要： An arrangement for estimating IQ-imbalance of a received OFDM-signal is disclosed. The arrangement comprises an FFT-unit (410) adapted to transform the received OFDM-signal to a frequency domain. The frequency domain comprises a plurality of sub-carrier frequencies, and the transformed received OFDM-signal comprises pilot symbols on one or more sub-carrier frequencies and symbols other than pilot symbols on one or more other sub-carrier frequencies. The arrangement also comprises channel estimation circuitry (430, 445), and an IQ-imbalance estimation unit (440) adapted to estimate the IQ-imbalance based on at least one of the pilot symbols, a determined estimated channel value for the sub-carrier frequency of the at least one pilot symbol, an estimate of the transmitted information symbol on the corresponding mirror sub-carrier frequency associated with the at least one pilot symbol and an estimated channel value for the corresponding mirror sub-carrier frequency associated with the at least one pilot symbol. Wherein the corresponding mirror sub-carrier frequency comprises a symbol other than a pilot symbol. A corresponding method and a computer program product are also disclosed.
摘要翻译：公开了一种用于估计接收的OFDM信号的IQ不平衡的装置。该装置包括适于将所接收的OFDM信号变换为频域的FFT单元（410）。频域包括多个子载波频率，并且经变换的接收OFDM信号包括在一个或多个子载波频率上的导频符号和除一个或多个其它子载波频率上的导频符号之外的符号。该布置还包括信道估计电路（430,445）和适用于基于导频符号中的至少一个估计IQ不平衡的IQ不平衡估计单元（440），用于子载波的确定的估计信道值所述至少一个导频符号的频率，与所述至少一个导频符号相关联的对应的镜像子载波频率上的所发送的信息符号的估计以及与所述至少一个导频符号相关联的对应的镜像子载波频率的估计信道值一个导频符号。其中相应的镜像子载波频率包括除导频符号之外的符号。还公开了相应的方法和计算机程序产品。

54. 发明授权

US08674758B2 Method and apparatus for improved high order modulation 有权
标题翻译：用于改进高阶调制的方法和装置
公开(公告)号：US08674758B2
公开(公告)日：2014-03-18
申请号：US13327316
申请日：2011-12-15
申请人： Mustafa Eroz , Lin-Nan Lee
发明人： Mustafa Eroz , Lin-Nan Lee
IPC分类号： H04L27/36 , H03C1/00 , H03C3/00 , H03D1/00 , H03D3/00
CPC分类号： H04L27/34 , H04L1/004 , H04L1/0071 , H04L25/03312
摘要： Methods, systems and software are provided for high order signal modulation based on improved signal constellation and bit labeling designs for enhanced performance characteristics, including decreased power consumption. According to the improved signal constellation and bit labeling designs for enhanced performance characteristics, designs for 8-ary, 16-ary, 32-ary and 64-ary signal constellations are provided. According to an 8-ary constellation, improved bit labeling and bit coordinates are provided for a 1+7APSK signal constellation. According to a 16-ary constellation, improved bit labeling and bit coordinates are provided for a 6+10APSK signal constellation. According to three 32-ary constellations, improved bit labeling and bit coordinates are provided for a 16+16APSK signal constellation and two 4+12+16APSK signal constellations. According to two 64-ary constellations, improved bit labeling and bit coordinates are provided for an 8+16+20+20APSK signal constellation and a 12+16+16+20APSK signal constellation.
摘要翻译：提供了基于改进的信号星座图和位标签设计的用于高阶信号调制的方法，系统和软件，用于增强的性能特征，包括功耗降低。根据改进的信号星座和位标签设计，增强了性能特征，提供了8路，16路，32路和64路信号星座的设计。根据8位星座，为1 + 7APSK信号星座提供改进的比特标识和比特坐标。根据16位星座，为6 + 10APSK信号星座提供了改进的比特标识和比特坐标。根据三个32位星座，为16 + 16APSK信号星座和两个4 + 12 + 16APSK信号星座提供改进的比特标识和比特坐标。根据两个64进制星座，为8 + 16 + 20 + 20APSK信号星座和12 + 16 + 16 + 20A + +信号星座提供改进的比特标识和比特坐标。

55. 发明授权

US08654897B2 Receiving circuit, transmitting circuit, micro-controller and method for power line carrier communication 有权
标题翻译：电力线载波通信接收电路，发送电路，微控制器及方法
公开(公告)号：US08654897B2
公开(公告)日：2014-02-18
申请号：US13609240
申请日：2012-09-10
申请人： Yajun Hu , Song Pan , Jian Cui , Guangsheng Chen , Rui Wang
发明人： Yajun Hu , Song Pan , Jian Cui , Guangsheng Chen , Rui Wang
IPC分类号： H03D3/00 , H03K9/06
CPC分类号： H04M11/066 , H04B3/542
摘要： A receiving circuit, a transmitting circuit, a micro-controller, and a method for power line carrier communication. The receiving circuit includes: an analog amplifier, a receiving filter, an analog-to-digital converter, a digital mixer, a digital filter, and a digital demodulator connected successively. The transmitting circuit includes: a digital modulator, a gain controller, a digital-to-analog converter, a transmitting filter, and a transmitting amplifier connected successively. The micro-controller includes a central processor and the receiving circuit or the transmitting circuit. The method for power line carrier communication can be implemented based on the receiving circuit or the micro-controller. The receiving circuit, the transmitting circuit, the micro-controller, and the method for power line carrier communication provided by present invention solve the defect of supporting only one modulation or demodulation mode in a conventional power line carrier communication system, and can process a power line carrier signal in different modulation or demodulation modes.
摘要翻译：接收电路，发送电路，微控制器和电力线载波通信的方法。接收电路包括：连续连接的模拟放大器，接收滤波器，模数转换器，数字混频器，数字滤波器和数字解调器。发送电路包括：数字调制器，增益控制器，数 - 模转换器，发送滤波器和连续连接的发送放大器。微控制器包括中央处理器和接收电路或发射电路。电力线载波通信的方法可以基于接收电路或微控制器实现。本发明提供的接收电路，发射电路，微控制器和电力线载波通信方法解决了传统电力线载波通信系统中仅支持一种调制或解调模式的缺陷，并且可以处理功率线载波信号在不同的调制或解调模式。

56. 发明授权

US08604840B2 Frequency synthesizer noise reduction 失效
标题翻译：频率合成器降噪
公开(公告)号：US08604840B2
公开(公告)日：2013-12-10
申请号：US12491922
申请日：2009-06-25
申请人： Mahmoud R. Ahmadi , Jafar Savoj
发明人： Mahmoud R. Ahmadi , Jafar Savoj
IPC分类号： G01R29/00 , H03D3/00 , H03D9/00 , G01R25/00 , H03H11/16 , H03K5/13
CPC分类号： H03L7/0891 , H03L7/1976
摘要： A method for reducing noise in a frequency synthesizer includes selecting a design variable k, calibrating a feedback time delay (Td), such that Td=kTVCO, where TVCO is the period of the synthesizer output signal. The method further includes estimating an instantaneous quantization error to a number of bits equal to q, defining a reference bias current of Icp/(k2q), where Icp is a charge pump current signal, and applying the estimated instantaneous quantization error to a current array to produce a down modification signal (ΔI). The current array is biased by the reference bias current. The down modification signal (ΔI) is summed with the charge pump current signal Icp to modulate a down current portion of the charge pump current signal Icp.
摘要翻译：一种用于降低频率合成器中的噪声的方法，包括选择设计变量k，校准反馈时间延迟（Td），使得T d = kTVCO，其中TVCO是合成器输出信号的周期。该方法还包括将瞬时量化误差估计为等于q的位数，定义Icp /（k2q）的参考偏置电流，其中Icp是电荷泵电流信号，并将估计的瞬时量化误差应用于电流阵列以产生下变频信号（DeltaI）。电流阵列被参考偏置电流偏置。降频修正信号（ΔI）与电荷泵电流信号Icp相加，以调制电荷泵电流信号Icp的下降电流部分。

57. 发明授权

US08565352B2 Digital IQ imbalance compensation for dual-carrier double conversion receiver 有权
标题翻译：双载波双转换接收机的数字IQ不平衡补偿
公开(公告)号：US08565352B2
公开(公告)日：2013-10-22
申请号：US13045386
申请日：2011-03-10
申请人： Chester Park , Niklas Andgart
发明人： Chester Park , Niklas Andgart
IPC分类号： H03D3/00
CPC分类号： H04L27/3863 , H04B1/28 , H04B1/30 , H04B17/21 , H04L5/001 , H04L27/2634 , H04L27/2647
摘要： Digital IQ imbalance compensation is utilized for a dual-carrier double conversion receiver. First, the effect of IQ imbalance on OFDM-based digital baseband is analyzed, showing that, in the presence of IQ imbalance, the baseband signal of each carrier is obtained from its own branch as well as the other branch. Second, IQ imbalance parameters of interest are estimated using pilot signals and compensated using only digital baseband processing.
摘要翻译：数字IQ不平衡补偿用于双载波双转换接收机。首先分析了IQ不平衡对基于OFDM的数字基带的影响，表明在存在IQ不平衡的情况下，每个载波的基带信号从其自身的分支以及另一个分支获得。第二，使用导频信号估计IQ不平衡参数，并仅使用数字基带处理进行补偿。

58. 发明申请

US20130216004A1 RECEIVER HAVING INPHASE-QUADRATURE IMBALANCE COMPENSATION AND INPHASE-QUADRATURE IMBALANCE COMPENSATION METHOD THEREOF 有权
标题翻译：具有相位不平衡补偿和相位不平衡补偿方法的接收器
公开(公告)号：US20130216004A1
公开(公告)日：2013-08-22
申请号：US13443281
申请日：2012-04-10
申请人： Terng-Yin Hsu , Wei-Chi Lai , Shao-Ying Yeh , Tsung-Yu Tsai
发明人： Terng-Yin Hsu , Wei-Chi Lai , Shao-Ying Yeh , Tsung-Yu Tsai
IPC分类号： H03D3/00
CPC分类号： H03D3/009 , H03D2200/0082 , H04L27/2647 , H04L27/3863 , H04L2027/0083
摘要： A receiver having Inphase-Quadrature (I-Q) imbalance compensation and an I-Q imbalance compensation method thereof are provided. The receiver calculates a cross-ratio parameter according to a first ideal receiving value and a first ideal conjugate receiving mirror of a first receiving signal and a second ideal receiving value and a second ideal conjugate receiving mirror of a second receiving signal. The receiver calculates an I-Q imbalance compensation parameter according to the cross-ratio parameter, the first ideal receiving value, the first ideal conjugate receiving mirror, the second ideal receiving value, the second ideal conjugate receiving mirror, the first receiving signal and the second receiving signal. The receiver compensates a third receiving signal according to the I-Q imbalance compensation parameter.
摘要翻译：提供具有同相正交（I-Q）不平衡补偿和I-Q不平衡补偿方法的接收机。接收机根据第一接收信号的第一理想接收值和第一接收信号的第一理想共轭接收镜和第二接收信号的第二理想接收值和第二理想共轭接收镜来计算交叉比参数。接收机根据交比参数，第一理想接收值，第一理想共轭接收镜，第二理想接收值，第二理想共轭接收镜，第一接收信号和第二接收器来计算IQ不平衡补偿参数信号。接收机根据I-Q不平衡补偿参数补偿第三个接收信号。

59. 发明授权

US08503354B2 Control signaling techniques for wireless networks 有权
标题翻译：无线网络的控制信令技术
公开(公告)号：US08503354B2
公开(公告)日：2013-08-06
申请号：US13161127
申请日：2011-06-15
申请人： Klaus Doppler , Lars Lindh
发明人： Klaus Doppler , Lars Lindh
IPC分类号： H03D3/00
CPC分类号： H04L12/66 , H04L1/1607 , H04L1/1854 , H04L2001/0097
摘要： Various example embodiments are disclosed relating to wireless networks, such as relay networks or multi-hop networks, and also relating to control signaling techniques for wireless networks. In an example embodiment, a method or technique may include transmitting (e.g., data or control) frames in a downlink direction and control frames in an uplink direction during a first phase, and transmitting (e.g., data or control) frames in an uplink direction and control frames in a downlink direction during a second phase.
摘要翻译：公开了与诸如中继网络或多跳网络的无线网络有关的各种示例实施例，并且还涉及用于无线网络的控制信令技术。在一个示例实施例中，一种方法或技术可以包括在第一阶段期间在下行链路方向上发送（例如，数据或控制）帧并且在上行链路方向上控制帧，以及在上行链路方向上发送（例如，数据或控制）帧以及在第二阶段期间在下行链路方向上控制帧。

60. 发明申请

US20130154755A1 METHOD AND APPARATUS FOR IMPROVED HIGH ORDER MODULATION 有权
标题翻译：改进高阶调制的方法和装置
公开(公告)号：US20130154755A1
公开(公告)日：2013-06-20
申请号：US13327316
申请日：2011-12-15
申请人： Mustafa Eroz , Lin-Nan Lee
发明人： Mustafa Eroz , Lin-Nan Lee
IPC分类号： H03C3/00 , H03D3/00
CPC分类号： H04L27/34 , H04L1/004 , H04L1/0071 , H04L25/03312
摘要： Methods, systems and software are provided for high order signal modulation based on improved signal constellation and bit labeling designs for enhanced performance characteristics, including decreased power consumption. According to the improved signal constellation and bit labeling designs for enhanced performance characteristics, designs for 8-ary, 16-ary, 32-ary and 64-ary signal constellations are provided. According to an 8-ary constellation, improved bit labeling and bit coordinates are provided for a 1+7APSK signal constellation. According to a 16-ary constellation, improved bit labeling and bit coordinates are provided for a 6+10APSK signal constellation. According to three 32-ary constellations, improved bit labeling and bit coordinates are provided for a 16+16APSK signal constellation and two 4+12+16APSK signal constellations. According to two 64-ary constellations, improved bit labeling and bit coordinates are provided for an 8+16+20+20APSK signal constellation and a 12+16+16+20APSK signal constellation.
摘要翻译：提供了基于改进的信号星座图和位标签设计的用于高阶信号调制的方法，系统和软件，用于增强的性能特征，包括功耗降低。根据改进的信号星座和位标签设计，增强了性能特征，提供了8路，16路，32路和64路信号星座的设计。根据8位星座，为1 + 7APSK信号星座提供改进的比特标识和比特坐标。根据16位星座，为6 + 10APSK信号星座提供了改进的比特标识和比特坐标。根据三个32位星座，为16 + 16APSK信号星座和两个4 + 12 + 16APSK信号星座提供改进的比特标识和比特坐标。根据两个64进制星座，为8 + 16 + 20 + 20APSK信号星座和12 + 16 + 16 + 20A + +信号星座提供了改进的比特标识和比特坐标。

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