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公开(公告)号：US20110051639A1
公开(公告)日：2011-03-03
申请号：US12546867
申请日：2009-08-25
申请人： Sthanunathan Ramakrishnan , Bijoy Bhukania , Jawaharlal Tangudu , Sarma S. Gunturi , Jaiganesh Balakrishnan , Rakesh Kumar , Abhijit Kumar Das , Yogesh Darwhekar
发明人： Sthanunathan Ramakrishnan , Bijoy Bhukania , Jawaharlal Tangudu , Sarma S. Gunturi , Jaiganesh Balakrishnan , Rakesh Kumar , Abhijit Kumar Das , Yogesh Darwhekar
CPC分类号： H04L12/12 , H04W24/00 , H04W28/18 , H04W52/028 , H04W84/12 , H04W84/18 , H04W88/02 , Y02D70/142 , Y02D70/144 , Y02D70/162 , Y02D70/23
摘要： A receiver in a packet based communication system includes a programmable block and a detection block that detects at least one of an operating condition of the receiver and a protocol condition of the communication system. Further, the receiver includes a control circuit coupled to the programmable block that controls the programmable block to transition to a set of radio modes according to at least one of the operating condition and the protocol condition.
摘要翻译： 基于分组的通信系统中的接收机包括可编程块和检测接收机的操作条件和通信系统的协议状态中的至少一个的检测块。 此外，接收机包括耦合到可编程块的控制电路，其根据操作条件和协议条件中的至少一个控制可编程块向一组无线电模式转变。
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公开(公告)号：US08477631B2
公开(公告)日：2013-07-02
申请号：US12546867
申请日：2009-08-25
申请人： Sthanunathan Ramakrishnan , Bijoy Bhukania , Jawaharlal Tangudu , Sarma S Gunturi , Jaiganesh Balakrishnan , Rakesh Kumar , Abhijit Kumar Das , Yogesh Darwhekar
发明人： Sthanunathan Ramakrishnan , Bijoy Bhukania , Jawaharlal Tangudu , Sarma S Gunturi , Jaiganesh Balakrishnan , Rakesh Kumar , Abhijit Kumar Das , Yogesh Darwhekar
IPC分类号： H04B7/00
CPC分类号： H04L12/12 , H04W24/00 , H04W28/18 , H04W52/028 , H04W84/12 , H04W84/18 , H04W88/02 , Y02D70/142 , Y02D70/144 , Y02D70/162 , Y02D70/23
摘要： A receiver in a packet based communication system includes a programmable block and a detection block that detects at least one of an operating condition of the receiver and a protocol condition of the communication system. Further, the receiver includes a control circuit coupled to the programmable block that controls the programmable block to transition to a set of radio modes according to at least one of the operating condition and the protocol condition.
摘要翻译： 基于分组的通信系统中的接收机包括可编程块和检测接收机的操作条件和通信系统的协议条件中的至少一个的检测块。 此外，接收机包括耦合到可编程块的控制电路，其根据操作条件和协议条件中的至少一个控制可编程块向一组无线电模式转变。
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公开(公告)号：US07796716B2
公开(公告)日：2010-09-14
申请号：US11828349
申请日：2007-07-26
申请人： Bijoy Bhukania , Raghu Ganesan , Naga Saty Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
发明人： Bijoy Bhukania , Raghu Ganesan , Naga Saty Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
CPC分类号： H04L27/2647 , H04B1/71 , H04L25/03006
摘要： A wireless device receives an input signal representing a signal of interest (e.g., one or more portions of a packet) on a wireless medium. The input signal may, in addition, contain narrowband interference signals. The wireless device removes the signal of interest from the input signal to produce a residue signal, and analyzes the residue signal to determine the presence of any interference bands in which narrowband interference signals may be present. The wireless device then removes the detected interference bands from the input signal. The residue signal may reveal the presence of interference signals, which might otherwise be hard to distinguish in the input signal. Thus, interference signals with power levels much lower than the power of the signal of interest may be detected and removed.
摘要翻译： 无线设备在无线介质上接收表示感兴趣的信号（例如，分组的一个或多个部分）的输入信号。 此外，输入信号可以包含窄带干扰信号。 无线设备从输入信号中去除感兴趣的信号以产生残余信号，并且分析残差信号以确定可能存在窄带干扰信号的任何干扰频带的存在。 无线设备然后从输入信号中去除检测到的干扰带。 残留信号可能显示干扰信号的存在，否则在输入信号中可能难以区分。 因此，可以检测和去除具有远低于感兴趣信号的功率的功率水平的干扰信号。
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公开(公告)号：US20080043888A1
公开(公告)日：2008-02-21
申请号：US11828349
申请日：2007-07-26
申请人： Bijoy Bhukania , Raghu Ganesan , Naga Satya Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
发明人： Bijoy Bhukania , Raghu Ganesan , Naga Satya Srikanth Puvvada , Sthanunathan Ramakrishnan , Jaiganesh Balakrishnan
CPC分类号： H04L27/2647 , H04B1/71 , H04L25/03006
摘要： A wireless device receives an input signal representing a signal of interest (e.g., one or more portions of a packet) on a wireless medium. The input signal may, in addition, contain narrowband interference signals. The wireless device removes the signal of interest from the input signal to produce a residue signal, and analyzes the residue signal to determine the presence of any interference bands in which narrowband interference signals may be present. The wireless device then removes the detected interference bands from the input signal. The residue signal may reveal the presence of interference signals, which might otherwise be hard to distinguish in the input signal. Thus, interference signals with power levels much lower than the power of the signal of interest may be detected and removed.
摘要翻译： 无线设备在无线介质上接收表示感兴趣的信号（例如，分组的一个或多个部分）的输入信号。 此外，输入信号可以包含窄带干扰信号。 无线设备从输入信号中去除感兴趣的信号以产生残余信号，并且分析残差信号以确定可能存在窄带干扰信号的任何干扰频带的存在。 无线设备然后从输入信号中去除检测到的干扰带。 残留信号可能显示干扰信号的存在，否则在输入信号中可能难以区分。 因此，可以检测和去除具有远低于感兴趣信号的功率的功率水平的干扰信号。
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5.发明申请Receiver Block Providing Signal Quality Information in a Communication System with Signal Constellation not Having multiple Symbols in Same Angle 审中-公开接收器块提供具有信号星座的通信系统中没有相同角度的多个符号的信号质量信息公开(公告)号：US20070030915A1
公开(公告)日：2007-02-08
申请号：US11161460
申请日：2005-08-04
CPC分类号： H04L27/22 , H04L1/206 , H04L25/067
摘要： An aspect of the present invention provides signal quality information representing the angular deviations (i.e., based on the phase angle difference between the received symbol and the corresponding decoded symbol (i.e., selected symbol point in a signal constellation)). As a result, a relatively more accurate signal quality information is provided to external component at least in systems in which the signal constellation do not have multiple symbols in the same angle. The computational complexity may also be reduced as a result.
摘要翻译： 本发明的一个方面提供了表示角度偏差的信号质量信息（即，基于接收符号和对应的解码符号之间的相位角差（即，信号星座中的所选符号点））。 结果，至少在信号星座不具有相同角度的多个符号的系统中，向外部组件提供相对更准确的信号质量信息。 结果也可能减少计算复杂度。
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公开(公告)号：US08582699B2
公开(公告)日：2013-11-12
申请号：US12698173
申请日：2010-02-02
IPC分类号： H04L27/08
CPC分类号： H03G3/3036 , H03M1/185 , H04B1/1036 , H04B17/309 , H04B17/345 , H04L27/08
摘要： Automatic gain control in a receiver. A method for controlling operating range of an analog-to-digital converter (ADC) by an automatic gain control circuit includes estimating a peak-to-average ratio corresponding to an analog signal from digital samples of the analog signal. The method includes determining a peak value corresponding to the analog signal based on the peak-to-average ratio. Further, the method includes maintaining magnitude of the analog signal at an input of the ADC and gain of the receiver based on the peak value.
摘要翻译： 接收机自动增益控制。 用于通过自动增益控制电路控制模数转换器（ADC）的操作范围的方法包括从模拟信号的数字样本估计对应于模拟信号的峰均比。 该方法包括基于峰均比来确定与模拟信号相对应的峰值。 此外，该方法包括基于峰值来维持ADC的输入处的模拟信号的幅度和接收机的增益。
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公开(公告)号：US20100119020A1
公开(公告)日：2010-05-13
申请号：US12505553
申请日：2009-07-20
摘要： An aspect of the present invention detects the presence of interference by examining an input signal received on an input path, and blanks the receiver if interference is detected. Information contained in the input signal may be recovered otherwise. In an embodiment, the duty cycle of a jamming signal is determined by examining the input signal, and a threshold strength having a positive correlation with the duty cycle is determined. If the strength of the jamming signal during the on-interval (start and end of the interference in each cycle) is greater than the threshold strength, then only the receiver is blanked. Otherwise, no blanking is performed, and only the gain of an amplifier in the path from the input path to a baseband processor is reduced. According to another aspect, one or more cycles of the interference is used to detect the start of interference and the receiver is blanked when interference is present.
摘要翻译： 本发明的一个方面通过检查在输入路径上接收到的输入信号来检测干扰的存在，如果检测到干扰，则对接收器进行空白。 包含在输入信号中的信息可以另外恢复。 在一个实施例中，通过检查输入信号来确定干扰信号的占空比，并确定与占空比正相关的阈值强度。 如果在间隔期间（每个周期的干扰的开始和结束）中的干扰信号的强度大于阈值强度，则仅接收机被消隐。 否则，不执行消隐，并且仅减少从输入路径到基带处理器的路径中的放大器的增益。 根据另一方面，使用干扰的一个或多个周期来检测干扰的开始，并且当存在干扰时接收机被消隐。
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公开(公告)号：US09042487B2
公开(公告)日：2015-05-26
申请号：US13584804
申请日：2012-08-13
CPC分类号： H04L27/3863 , H04B1/0039
摘要： Apparatus and methods disclosed herein perform gain, clipping, and phase compensation in the presence of I/Q mismatch in quadrature RF receivers. Gain and phase mismatch are exacerbated by differences in clipping between I & Q signals in low resolution ADCs. Signals in the stronger channel arm are clipped differentially more than weaker signals in the other channel arm. Embodiments herein perform clipping operations during iterations of gain mismatch calculations in order to balance clipping between the I and Q channel arms. Gain compensation coefficients are iteratively converged, clipping levels are established, and data flowing through the network is gain and clipping compensated. A compensation phase angle and phase compensation coefficients are then determined from gain and clipping compensated sample data. The resulting phase compensation coefficients are applied to the gain and clipping corrected receiver data to yield a gain, clipping, and phase compensated data stream.
摘要翻译： 在正交RF接收机中存在I / Q失配的情况下，本文公开的装置和方法执行增益，限幅和相位补偿。 由于低分辨率ADC中I＆Q信号之间的限幅差异，增益和相位失配加剧。 更强的信道臂中的信号比另一个信道臂中的较弱的信号差分地被削波。 本文实施例在增益失配计算的迭代期间执行削波操作，以平衡I和Q通道臂之间的限幅。 增益补偿系数迭代收敛，建立限幅电平，流经网络的数据得到增益和限幅补偿。 然后从增益和削波补偿采样数据确定补偿相位角和相位补偿系数。 所得到的相位补偿系数被应用于增益和限幅校正的接收机数据，以产生增益，限幅和相位补偿的数据流。
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9.发明申请公开(公告)号：US20140044158A1
公开(公告)日：2014-02-13
申请号：US13584804
申请日：2012-08-13
CPC分类号： H04L27/3863 , H04B1/0039
摘要： Apparatus and methods disclosed herein perform gain, clipping, and phase compensation in the presence of I/Q mismatch in quadrature RF receivers. Gain and phase mismatch are exacerbated by differences in clipping between I & Q signals in low resolution ADCs. Signals in the stronger channel arm are clipped differentially more than weaker signals in the other channel arm. Embodiments herein perform clipping operations during iterations of gain mismatch calculations in order to balance clipping between the I and Q channel arms. Gain compensation coefficients are iteratively converged, clipping levels are established, and data flowing through the network is gain and clipping compensated. A compensation phase angle and phase compensation coefficients are then determined from gain and clipping compensated sample data. The resulting phase compensation coefficients are applied to the gain and clipping corrected receiver data to yield a gain, clipping, and phase compensated data stream.
摘要翻译： 在正交RF接收机中存在I / Q失配的情况下，本文公开的装置和方法执行增益，限幅和相位补偿。 由于低分辨率ADC中I＆Q信号之间的限幅差异，增益和相位失配加剧。 更强的信道臂中的信号比另一个信道臂中的较弱的信号差分地被削波。 本文实施例在增益失配计算的迭代期间执行削波操作，以平衡I和Q通道臂之间的限幅。 增益补偿系数迭代收敛，建立限幅电平，流经网络的数据得到增益和限幅补偿。 然后从增益和削波补偿采样数据确定补偿相位角和相位补偿系数。 所得到的相位补偿系数被应用于增益和限幅校正的接收机数据，以产生增益，限幅和相位补偿的数据流。
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10.发明申请METHOD AND SYSTEM FOR FALSE FREQUENCY LOCK FREE AUTONOMOUS SCAN IN A RECEIVER 有权方法和系统在接收机中进行无差错自由无障碍扫描公开(公告)号：US20110111714A1
公开(公告)日：2011-05-12
申请号：US12616260
申请日：2009-11-11
CPC分类号： H04B17/318
摘要： Method and system for false lock free autonomous scan in a receiver is disclosed. The method includes identifying a presence of a desired signal to avoid false frequency lock in a Frequency Modulation receiver. The method includes receiving a signal. The method further includes identifying the desired signal, if a first energy is above a first threshold. The method also includes identifying the desired signal, if an Intermediate Frequency count is below a second threshold. The method includes identifying the desired signal, if a second energy of the signal is above a third threshold. The method includes identifying the desired signal, if an absolute difference between a first Received Signal Strength Indication (RSSI) value and a second RSSI value of the signal is below a fourth threshold. The method includes determining a third energy. The method includes identifying the desired signal, if the third energy is below a fifth threshold.
摘要翻译： 公开了一种用于接收机中无锁自主扫描的方法和系统。 该方法包括识别期望信号的存在以避免频率调制接收机中的错误频率锁定。 该方法包括接收信号。 如果第一能量高于第一阈值，该方法还包括识别期望信号。 如果中频频率低于第二阈值，该方法还包括识别期望的信号。 如果信号的第二能量高于第三阈值，则该方法包括识别所需信号。 如果信号的第一接收信号强度指示（RSSI）值和第二RSSI值之间的绝对差低于第四阈值，则该方法包括识别所需信号。 该方法包括确定第三能量。 如果第三能量低于第五阈值，则该方法包括识别所需信号。
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