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公开(公告)号：US11296654B2
公开(公告)日：2022-04-05
申请号：US17171490
申请日：2021-02-09
发明人： Lionel Vogt
摘要： An electronic envelope detection circuit includes an input signal detecting circuit having at least one MOS transistor configured to receive a radiofrequency input signal and to deliver an internal signal on the basis of the input signal. The biasing point of the at least one transistor is controlled by the input signal and a control signal. A processing circuit that is coupled to the input signal detecting circuit is configured to deliver a low-frequency output signal on the basis of the internal signal and further deliver the control signal on the basis of the output signal. In operation, the value of the control signal decreases when the average power of the input signal increases, and vice versa.
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公开(公告)号：US10355903B2
公开(公告)日：2019-07-16
申请号：US16160250
申请日：2018-10-15
申请人： MaxLinear, Inc.
发明人： Sridhar Ramesh
摘要： Systems and methods are provided for peak to average power ratio (PAPR) reduction in multichannel transmissions. A plurality of frequency-domain symbols may be generated and assigned to a plurality of subcarriers associated with a multichannel transmission. The subcarriers may be assigned to a plurality of channels used for the multichannel transmission, with a number of the channels being different than a number of the subcarriers. A plurality of time-domain signals corresponding to the plurality of channels may be generated, and an adjustment may be applied to at least one time-domain signal, to generate a corresponding adjusted time-domain signal. The adjustment may be configured based on one or more characteristic associated with at least two of the frequency-domain symbols. Handling related information may be communicated form the transmit-side to the receive-side, such as using spare carriers, to enable handling an output corresponding to the plurality of time-domain signals.
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3.发明授权Method and apparatus for self-directed interference cancellation filter management 有权用于自定向干扰消除滤波器管理的方法和装置公开(公告)号：US09490855B1
公开(公告)日：2016-11-08
申请号：US14841798
申请日：2015-09-01
发明人： Roberto Rimini , Nicholas Michael Carbone , Taesang Yoo , Muhammad Abdelghaffar , Sung Hwang , Wooseok Nam
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04B17/336 , H04L12/26 , H04L25/03
CPC分类号： H04B1/1036 , H04B1/005 , H04B1/525 , H04B17/336 , H04L25/03006 , H04L43/16
摘要： Embodiments include systems and methods for managing an adaptive interference filter performed by a device processor of a mobile communication device. A device processor may determine whether a transmission power from the mobile communication device is greater than or equal to a transmit power threshold. The device processor may determine whether a ratio of interference in a received signal to a level of the received signal including noise (interference ratio) is greater than or equal to an interference ratio threshold in response to determining that the transmission power is greater than or equal to the transmit power threshold. The device processor may perform interference cancellation with the adaptive interference filter in response to determining that the interference ratio is greater than or equal to the interference ratio threshold. In some embodiments the adaptive interference filter may be a non-linear interference cancellation filter.
摘要翻译： 实施例包括用于管理由移动通信设备的设备处理器执行的自适应干扰滤波器的系统和方法。 设备处理器可以确定来自移动通信设备的传输功率是否大于或等于发射功率阈值。 设备处理器可以响应于确定发射功率大于或等于，确定接收信号中的干扰比与包括噪声（干扰比）的接收信号的电平是否大于或等于干扰比阈值 到发射功率阈值。 响应于确定干扰比大于或等于干扰比阈值，设备处理器可以利用自适应干扰滤波器执行干扰消除。 在一些实施例中，自适应干扰滤波器可以是非线性干扰消除滤波器。
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4.发明授权Method and apparatus to provide simultaneous sensing and transmission for dynamic spectrum access 有权提供用于动态频谱接入的同时感测和传输的方法和装置公开(公告)号：US09237043B1
公开(公告)日：2016-01-12
申请号：US14475931
申请日：2014-09-03
申请人： Raytheon Company
发明人： Mark J. Beals , David E. Mussmann
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04L25/03 , H04B1/12
CPC分类号： H04L25/03828 , H04B1/126 , H04B1/525
摘要： A multicarrier radio frequency (RF) transceiver implementing dynamic spectrum access (DSA) is capable of sensing a spectral environment and transmitting an RF signal at the same time. The transceiver can cancel an RF transmit signal component within a composite receive signal using a combination of analog and digital cancellation. In one embodiment, analog RF cancellation is performed to reduce the level of a transmit signal component of a composite receive signal before the signal reaches an RF receiver. The RF cancellation may be used to reduce the transmit signal component to a level that maintains the linear operation of the RF receiver. Digital cancellation may be performed to reduce transmit signal remnants within an output signal of the RF receiver. Digital cancellation may be performed on a subcarrier-by-subcarrier basis in some implementations.
摘要翻译： 实现动态频谱接入（DSA）的多载波射频（RF）收发机能够同时感测频谱环境和发射RF信号。 收发器可以使用模拟和数字消除的组合来消除复合接收信号内的RF发射信号分量。 在一个实施例中，执行模拟RF消除以在信号到达RF接收器之前降低复合接收信号的发射信号分量的电平。 RF取消可以用于将发送信号分量减小到维持RF接收机的线性操作的水平。 可以执行数字消除以减少RF接收机的输出信号内的发射信号残余。 在一些实现中，可以在逐副载波的基础上执行数字消除。
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公开(公告)号：US09191258B2
公开(公告)日：2015-11-17
申请号：US14143743
申请日：2013-12-30
申请人： FUJITSU LIMITED
发明人： Takashi Seyama , Takashi Dateki
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04L27/26 , H04L25/02
CPC分类号： H04L27/2647 , H04J11/0023 , H04L5/005 , H04L25/0204 , H04L25/0224
摘要： A reception device including: an antenna configured to receive a radio signal including a radio frame that includes a plurality of symbols, and a processor configured to perform a first processing for estimating a first interference noise power for one or more first specified symbols of the plurality of symbols, each of the one or more first specified symbols including each of one or more reference signals respectively, and to perform a second processing for estimating a second interference noise power for one or more second specified symbols of the plurality of symbols, each of the one or more second specified symbols including no reference signal, the second interference noise power differing from the first interference noise power.
摘要翻译： 一种接收装置，包括：天线，被配置为接收包括包括多个符号的无线电帧的无线电信号;以及处理器，被配置为执行用于估计所述多个符号中的一个或多个第一特定符号的第一干扰噪声功率的第一处理 的符号，分别包括一个或多个参考信号中的每一个的一个或多个第一指定符号中的每一个，并且执行用于估计多个符号中的一个或多个第二指定符号的第二干扰噪声功率的第二处理， 所述一个或多个第二指定符号不包括参考信号，所述第二干扰噪声功率不同于所述第一干扰噪声功率。
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6.发明授权Adaptive frequency-domain reference noise canceller for multicarrier communications systems 有权适用于多载波通信系统的频域参考噪声消除器公开(公告)号：US09160381B2
公开(公告)日：2015-10-13
申请号：US14099763
申请日：2013-12-06
申请人： Broadcom Corporation
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04L25/02 , H04L5/00
CPC分类号： H04B1/10 , H04L5/00 , H04L25/022 , H04L25/0226
摘要： A method and apparatus to align data blocks in a data signal and a reference signal to increase cross-correlation between the data signal and the reference signal as compared to the unaligned data and reference signals and cancel interference in the data signal in the frequency-domain under changing conditions and in the presence of the data signal.
摘要翻译： 一种将数据信号和参考信号中的数据块对准以增加数据信号与参考信号之间的互相关的方法和装置，与未对准的数据和参考信号相比较，并且消除频域中的数据信号中的干扰 在变化的条件和数据信号的存在下。
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7.发明授权Method and apparatus for impulsive noise mitigation using adaptive blanker based on BPSK modulation system 有权基于BPSK调制系统的自适应滤波器的脉冲噪声抑制方法和装置公开(公告)号：US09118370B2
公开(公告)日：2015-08-25
申请号：US14255319
申请日：2014-04-17
申请人： Electronics and Telecommunications Research Institute , Industry-University Cooperation Foundation Hanyang University
发明人： Seung Keun Park , Sang Bong Jeon , Su Na Choi , Haewoon Nam , Hyungkook Oh
CPC分类号： H04B1/0475 , H04B1/1027
摘要： A method for impulsive noise mitigation using an adaptive blanker based on BPSK modulation system includes estimating narrowband Middleton parameters of impulsive noise from signals received for a fixed time period; calculating a threshold using the estimated narrowband Middleton parameters; operating the first blanker to suppress impulsive noise from the signal received at a given point of time through the comparison of the SNR value of the received signal and the threshold. Further, the method includes operating the second blanker to suppress impulsive noise from the received signal through the comparison of the summation of the threshold and the SNR value with an absolute value of the received signal, when the SNR value is above the threshold.
摘要翻译： 使用基于BPSK调制系统的自适应消隐器的脉冲噪声抑制方法包括：从固定时间段内接收的信号估计脉冲噪声的窄带米德尔顿参数; 使用估计的窄带米德尔顿参数计算阈值; 通过比较接收信号的SNR值和阈值，操作第一消隐器以抑制从给定时间点接收到的信号的脉冲噪声。 此外，当SNR值高于阈值时，该方法包括操作第二消隐器以通过将阈值和SNR值的求和与接收信号的绝对值进行比较来抑制来自接收信号的脉冲噪声。
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8.发明授权Radio frequency (RF) receivers with whitened digital clocks and related methods 有权具有白化数字时钟和相关方法的射频（RF）接收机公开(公告)号：US09042499B2
公开(公告)日：2015-05-26
申请号：US14062958
申请日：2013-10-25
发明人： Michael R. May , Scott T. Haban
CPC分类号： H04B1/12 , H04B15/06 , H04B2215/067
摘要： Radio frequency (RF) receivers having whitened digital clocks and related methods are disclosed. Disclosed embodiments generate whitened clocks having random variations that are used to operate digital processing blocks so that interference created by the whitened clocks is seen as white noise within the received RF signal spectrum. RF input signals are received by RF front-ends (RFFEs) that output analog signals associated with channels within the RF input signals. These analog signals are converted to digital information and processed by digital receive path circuitry that outputs digital data associated with the channel. The digital receive path circuitry includes a whitened clock generator that generates a whitened clock having random variations and which a digital processing block that operates based upon the whitened clock. Further, the RFFE and the digital receive path circuitry are located within a single integrated circuit.
摘要翻译： 公开了具有白化数字时钟和相关方法的射频（RF）接收机。 公开的实施例产生具有用于操作数字处理块的随机变化的白化时钟，使得由白化时钟产生的干扰在接收的RF信号频谱内被视为白噪声。 RF输入信号由RF前端（RFFE）接收，RF前端输出与RF输入信号内的信道相关的模拟信号。 这些模拟信号被转换成数字信息并由数字接收路径电路进行处理，该电路输出与该信道相关联的数字数据。 数字接收路径电路包括白化时钟发生器，其产生具有随机变化的白化时钟，以及基于白化时钟操作的数字处理块。 此外，RFFE和数字接收路径电路位于单个集成电路内。
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9.发明授权Method and device for suppressing interference in communication networks using frequency switched transmit diversity coding 有权用于使用频率交换发射分集编码来抑制通信网络中的干扰的方法和装置公开(公告)号：US08948323B2
公开(公告)日：2015-02-03
申请号：US13646338
申请日：2012-10-05
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04B7/04 , H04B7/08
CPC分类号： H04B7/0456 , H04B7/0854
摘要： Devices and methods for suppressing interference in inter-cell and intra-cell network communication. First and second received signals are received at a communication device, the first and second received signals comprising, respectively, reference signals and data signals. Estimated channel vectors are calculated from the first received signals, and estimated data covariance matrices are calculated from the second received signals. A plurality of combining weight vectors are determined based on the estimated channel vectors and the estimated data covariance matrices. The second received signals are then combined with the plurality of combining weight vectors to obtain a plurality of combined signals, wherein interference in the second received signals has been suppressed in the plurality of combined signals.
摘要翻译： 用于抑制小区间和小区内网络通信中的干扰的装置和方法。 在通信设备处接收第一和第二接收信号，第一和第二接收信号分别包括参考信号和数据信号。 从第一接收信号计算估计的信道向量，并且从第二接收信号计算估计的数据协方差矩阵。 基于估计的信道向量和估计的数据协方差矩阵来确定多个组合权重向量。 然后将第二接收信号与多个组合权重向量组合以获得多个组合信号，其中在多个组合信号中已经抑制了第二接收信号中的干扰。
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公开(公告)号：US08923455B2
公开(公告)日：2014-12-30
申请号：US13669481
申请日：2012-11-06
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08 , H04B17/00 , H04W24/10
摘要： A method includes, in a mobile communication terminal, receiving from at least first and second base stations, which cooperate in a coordinated transmission scheme, signals that are transmitted over respective first and second communication channels. Respective channel measures are calculated for the communication channels based on the received signals. First and second feedback data, which are indicative of the respective channel measures of the first and second communication channels, are formulated such that the first feedback data has a first data size and the second feedback data has a second data size, different from the first data size. The first and second feedback data are transmitted from the mobile communication terminal to at least one of the base stations.
摘要翻译： 一种方法包括在移动通信终端中，从协调传输方案中协作的至少第一和第二基站接收在各个第一和第二通信信道上发送的信号。 基于接收到的信号，为通信信道计算各个信道量度。 表示第一和第二通信信道的相应信道测量值的第一和第二反馈数据被配置为使得第一反馈数据具有第一数据大小，并且第二反馈数据具有与第一数据大小不同的第二数据大小 数据大小。 第一和第二反馈数据从移动通信终端发送到至少一个基站。
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