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1. 发明申请

US20130094550A1 SHARED FEEDBACK FOR ADAPTIVE TRANSMITTER PRE-DISTORTION 有权
标题翻译：用于自适应发射机预失真的共享反馈
公开(公告)号：US20130094550A1
公开(公告)日：2013-04-18
申请号：US13364065
申请日：2012-02-01
申请人： Philip D. Coan , Paul J. Draxler , Roberto Rimini , Thomas D. Marra , Gurkanwal Singh Sahota , Steven C. Ciccarelli , Shrenik Patel
发明人： Philip D. Coan , Paul J. Draxler , Roberto Rimini , Thomas D. Marra , Gurkanwal Singh Sahota , Steven C. Ciccarelli , Shrenik Patel
IPC分类号： H04L25/49 , H04B1/38
CPC分类号： H04L27/368 , H03F1/3247 , H03F3/195 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2201/3212 , H03F2203/7221 , H03F2203/7236 , H04B7/0825
摘要： A modem is described. The modem includes a transmitter. The transmitter includes a digital pre-distortion module and a power amplifier. The modem also includes one or more selected shared receivers. The one or more selected shared receivers generate a feedback signal for the digital pre-distortion module. The modem further includes a feedback switch. The feedback switch selectively couples the one or more selected shared receivers to an output of the transmitter.
摘要翻译：调制解调器被描述。调制解调器包括发射机。发射机包括数字预失真模块和功率放大器。调制解调器还包括一个或多个选择的共享接收器。一个或多个选择的共享接收器产生用于数字预失真模块的反馈信号。调制解调器还包括反馈开关。反馈开关将一个或多个选择的共享接收机选择性地耦合到发射机的输出。

2. 发明授权

US08964821B2 Shared feedback for adaptive transmitter pre-distortion 有权
标题翻译：自适应发射机预失真的共享反馈
公开(公告)号：US08964821B2
公开(公告)日：2015-02-24
申请号：US13364065
申请日：2012-02-01
申请人： Philip D. Coan , Paul J. Draxler , Roberto Rimini , Thomas D. Marra , Gurkanwal Singh Sahota , Steven C. Ciccarelli , Shrenik Patel
发明人： Philip D. Coan , Paul J. Draxler , Roberto Rimini , Thomas D. Marra , Gurkanwal Singh Sahota , Steven C. Ciccarelli , Shrenik Patel
IPC分类号： H04B1/38 , H04L5/16 , H04L27/36 , H03F1/32 , H03F3/195 , H03F3/24 , H03F3/68 , H03F3/72 , H04B7/08
CPC分类号： H04L27/368 , H03F1/3247 , H03F3/195 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2201/3212 , H03F2203/7221 , H03F2203/7236 , H04B7/0825
摘要： A modem is described. The modem includes a transmitter. The transmitter includes a digital pre-distortion module and a power amplifier. The modem also includes one or more selected shared receivers. The one or more selected shared receivers generate a feedback signal for the digital pre-distortion module. The modem further includes a feedback switch. The feedback switch selectively couples the one or more selected shared receivers to an output of the transmitter.
摘要翻译：调制解调器被描述。调制解调器包括发射机。发射机包括数字预失真模块和功率放大器。调制解调器还包括一个或多个选择的共享接收器。一个或多个选择的共享接收器产生用于数字预失真模块的反馈信号。调制解调器还包括反馈开关。反馈开关将一个或多个选择的共享接收机选择性地耦合到发射机的输出。

3. 发明申请

US20100260233A1 PHASE TRACKING IN FREQUENCY DOMAIN IN A WIRELESS COMMUNICATION SYSTEM 失效
标题翻译：无线通信系统中频域中的相位跟踪
公开(公告)号：US20100260233A1
公开(公告)日：2010-10-14
申请号：US12423363
申请日：2009-04-14
申请人： Le Nguyen Luong , Shrenik Patel , Stefan Franz
发明人： Le Nguyen Luong , Shrenik Patel , Stefan Franz
IPC分类号： H04B1/713 , H04L27/00
CPC分类号： H04L27/0014 , H04L27/2659 , H04L27/266 , H04L27/2675 , H04L2027/003 , H04L2027/0059 , H04L2027/0067 , H04L2027/0069
摘要： Techniques for correcting sampling frequency offset (SFO) and carrier frequency offset (CFO) in a wireless communication system are disclosed. An apparatus for correcting SFO and CFO may include a pilot tone extractor for extracting a plurality of pilot tones from one or more first symbols, a demodulator, an error signal generator, a loop filter, an angle generator, and a device for applying a correction phase to one or more symbols subsequent to the one or more first symbols. The demodulator is configured to demodulate the pilot tones. The error signal generator is configured to generate an error signal by summing and calculating the arctangent of the plurality of demodulated pilot tones. The loop filter is configured to generate an estimated phase rotation due to a residual CFO and the angle generator is configured to generate a correction phase for the plurality of tones.
摘要翻译：公开了用于在无线通信系统中校正采样频率偏移（SFO）和载波频率偏移（CFO）的技术。用于校正SFO和CFO的装置可以包括用于从一个或多个第一符号提取多个导频音调的导频音提取器，解调器，误差信号发生器，环路滤波器，角度发生器和用于应用校正的装置相位到一个或多个第一符号之后的一个或多个符号。解调器被配置为解调导频音调。误差信号发生器被配置为通过求和并计算多个解调导频音的反正切来产生误差信号。环路滤波器被配置为由于残余CFO而产生估计的相位旋转，并且角度发生器被配置为产生用于多个音调的校正相位。

4. 发明授权

US08744336B2 Interference detection apparatus and method 失效
标题翻译：干扰检测装置及方法
公开(公告)号：US08744336B2
公开(公告)日：2014-06-03
申请号：US12199113
申请日：2008-08-27
申请人： Shrenik Patel , Prasad Gudem , Saraswathi Palakurty
发明人： Shrenik Patel , Prasad Gudem , Saraswathi Palakurty
IPC分类号： H04K3/00
CPC分类号： H04K3/82 , H04B1/1027 , H04B1/109
摘要： Techniques for detecting jammers in a received signal are described. A jammer detector includes a jammer filter for attenuating transmit signals leaked into the receive path, a pulse generator for converting the interference signals into discrete-level pulses, and a pulse processor for determining the presence of jammers in the discrete-level pulses. In an exemplary embodiment, the pulse processor is configured to further discriminate among close-in jammers that are close to the desired receive frequency, far-away jammers, and jammers arising from the transmit signals leaked into the receive path. In another exemplary embodiment, hysteresis is provided in the pulse generator to enable the generation of reliable pulses. Further aspects include configuring the jammer detector for operation in a plurality of frequency bands and/or according to a plurality of communications standards.
摘要翻译：描述用于检测接收信号中的干扰的技术。干扰检测器包括用于衰减泄漏到接收路径中的发射信号的干扰滤波器，用于将干扰信号转换成离散电平脉冲的脉冲发生器，以及用于确定离散电平脉冲中干扰的存在的脉冲处理器。在示例性实施例中，脉冲处理器被配置为进一步区分接近期望接收频率的接近干扰信号，远距离干扰信号以及从泄漏到接收路径中的发射信号产生的干扰。在另一个示例性实施例中，在脉冲发生器中提供迟滞以使能产生可靠的脉冲。另外的方面包括将干扰检测器配置为在多个频带中操作和/或根据多个通信标准。

5. 发明授权

US08265181B2 Phase tracking in frequency domain in a wireless communication system 失效
标题翻译：无线通信系统中频域的相位跟踪
公开(公告)号：US08265181B2
公开(公告)日：2012-09-11
申请号：US12423363
申请日：2009-04-14
申请人： Le Nguyen Luong , Shrenik Patel , Stefan Franz
发明人： Le Nguyen Luong , Shrenik Patel , Stefan Franz
IPC分类号： H04L27/28
CPC分类号： H04L27/0014 , H04L27/2659 , H04L27/266 , H04L27/2675 , H04L2027/003 , H04L2027/0059 , H04L2027/0067 , H04L2027/0069
摘要： Techniques for correcting sampling frequency offset (SFO) and carrier frequency offset (CFO) in a wireless communication system are disclosed. An apparatus for correcting SFO and CFO may include a pilot tone extractor for extracting a plurality of pilot tones from one or more first symbols, a demodulator, an error signal generator, a loop filter, an angle generator, and a device for applying a correction phase to one or more symbols subsequent to the one or more first symbols. The demodulator is configured to demodulate the pilot tones. The error signal generator is configured to generate an error signal by summing and calculating the arctangent of the plurality of demodulated pilot tones. The loop filter is configured to generate an estimated phase rotation due to a residual CFO and the angle generator is configured to generate a correction phase for the plurality of tones.
摘要翻译：公开了用于在无线通信系统中校正采样频率偏移（SFO）和载波频率偏移（CFO）的技术。用于校正SFO和CFO的装置可以包括用于从一个或多个第一符号提取多个导频音调的导频音提取器，解调器，误差信号发生器，环路滤波器，角度发生器和用于应用校正的装置相位到一个或多个第一符号之后的一个或多个符号。解调器被配置为解调导频音调。误差信号发生器被配置为通过求和并计算多个解调导频音的反正切来产生误差信号。环路滤波器被配置为由于残余CFO而产生估计的相位旋转，并且角度发生器被配置为产生用于多个音调的校正相位。

6. 发明申请

US20100052968A1 INTERFERENCE DETECTION APPARATUS AND METHOD 失效
标题翻译：干扰检测装置和方法
公开(公告)号：US20100052968A1
公开(公告)日：2010-03-04
申请号：US12199113
申请日：2008-08-27
申请人： Shrenik Patel , Prasad Gudem , Saraswathi Palakurty
发明人： Shrenik Patel , Prasad Gudem , Saraswathi Palakurty
IPC分类号： G01S7/38
CPC分类号： H04K3/82 , H04B1/1027 , H04B1/109
摘要： Techniques for detecting jammers in a received signal are described. A jammer detector includes a jammer filter for attenuating transmit signals leaked into the receive path, a pulse generator for converting the interference signals into discrete-level pulses, and a pulse processor for determining the presence of jammers in the discrete-level pulses. In an exemplary embodiment, the pulse processor is configured to further discriminate among close-in jammers that are close to the desired receive frequency, far-away jammers, and jammers arising from the transmit signals leaked into the receive path. In another exemplary embodiment, hysteresis is provided in the pulse generator to enable the generation of reliable pulses. Further aspects include configuring the jammer detector for operation in a plurality of frequency bands and/or according to a plurality of communications standards.
摘要翻译：描述用于检测接收信号中的干扰的技术。干扰检测器包括用于衰减泄漏到接收路径中的发射信号的干扰滤波器，用于将干扰信号转换成离散电平脉冲的脉冲发生器，以及用于确定离散电平脉冲中干扰的存在的脉冲处理器。在示例性实施例中，脉冲处理器被配置为进一步区分接近期望接收频率的接近干扰信号，远距离干扰信号和从泄漏到接收路径中的发射信号产生的干扰。在另一个示例性实施例中，在脉冲发生器中提供迟滞以使能产生可靠的脉冲。另外的方面包括将干扰检测器配置为在多个频带中操作和/或根据多个通信标准。

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