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公开(公告)号：US08654874B1
公开(公告)日：2014-02-18
申请号：US13692772
申请日：2012-12-03
发明人： Peter Tze-Hwa Liu , Vladan Petrovic
IPC分类号： H04K1/10
CPC分类号： H04L27/2647 , H04L1/0057 , H04L1/006
摘要： A formatted data unit that was transmitted by a transmitter is received at a receiver. Received signal points are determined based on the received formatted data unit. Actual transmitted signal points corresponding to the received formatted data unit is determined at the receiver based on information known a priori by the receiver. An error is determined between the received signal points and the actual transmitted signal points determined at the receiver. An indicator of impulse noise is generated based on the error.
摘要翻译： 在接收器处接收由发送器发送的格式化数据单元。 接收到的信号点是根据接收的格式化数据单元确定的。 基于接收机先验知道的信息，在接收机确定与接收的格式化数据单元对应的实际发送信号点。 在接收信号点和在接收机处确定的实际发送信号点之间确定误差。 基于误差产生脉冲噪声的指标。
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2.发明授权Method and apparatus for compensating for IQ mismatch in radio frequency receivers 有权用于补偿射频接收机中的IQ失配的方法和装置公开(公告)号：US09197268B1
公开(公告)日：2015-11-24
申请号：US14670880
申请日：2015-03-27
发明人： Vladan Petrovic
摘要： A receiver including a physical layer module, a function module, a residual module, an IQ mismatch module, and a compensation module. The physical layer module is configured to (i) receive a signal, and (ii) downconvert the signal to generate a downconverted signal, wherein the downconverted signal has IQ mismatch. The function module is configured to determine (i) a first value based on a first function and a resultant signal, and (ii) a second value based on a second function. The residual module is configured to estimate a residual IQ mismatch based on the first value and the second value. The IQ mismatch module is configured to estimate an IQ mismatch coefficient based on the estimate of the residual IQ mismatch. The compensation module is configured to compensate for the IQ mismatch of the downconverted signal including generating the resultant signal based on the estimate of the IQ mismatch.
摘要翻译： 接收机，包括物理层模块，功能模块，残余模块，IQ失配模块和补偿模块。 物理层模块被配置为（i）接收信号，和（ii）下变频信号以产生下变频信号，其中下变频信号具有IQ不匹配。 功能模块被配置为基于第一功能和结果信号确定（i）第一值，以及（ii）基于第二功能的第二值。 残余模块被配置为基于第一值和第二值来估计残余IQ不匹配。 IQ失配模块被配置为基于残差IQ失配的估计来估计IQ失配系数。 补偿模块被配置为补偿下变频信号的IQ失配，包括基于IQ失配的估计来产生所得到的信号。
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3.发明授权Method and apparatus for adjusting a gain of a receiver in a wireless device 有权用于调整无线设备中的接收机的增益的方法和装置公开(公告)号：US09094843B1
公开(公告)日：2015-07-28
申请号：US14319133
申请日：2014-06-30
发明人： Vladan Petrovic , Manyuan Shen , Qing Zhao , Leilie Song
CPC分类号： H04W24/00 , G06F17/142 , H03G3/3089 , H04B1/69 , H04B17/21 , H04B17/318 , H04L5/0023 , H04L5/0048 , H04L27/265 , H04L27/3809 , H04W52/04 , H04W52/38 , H04W52/52
摘要： A system including a first power measuring module, a gain control module, and a signal processing module. The first power measuring module is configured to generate a first power measurement of a signal received by a receiver of a wireless device based on a plurality of reference signals received in the signal by the receiver of the wireless device. Each of the plurality of reference signals is transmitted at a predetermined power. The first power measurement is generated in frequency domain. The first power measurement is generated during a first frame of the signal received by the receiver of the wireless device. The gain control module is configured to adjust a gain of the receiver of the wireless device based on the first power measurement. The signal processing module is configured to process a second frame in the signal subsequent to the first frame at the adjusted gain.
摘要翻译： 一种包括第一功率测量模块，增益控制模块和信号处理模块的系统。 第一功率测量模块被配置为基于由无线设备的接收器在信号中接收的多个参考信号来生成由无线设备的接收机接收的信号的第一功率测量。 以预定的功率发送多个参考信号中的每一个。 在频域中产生第一功率测量。 在由无线设备的接收机接收的信号的第一帧期间产生第一功率测量。 增益控制模块被配置为基于第一功率测量来调整无线设备的接收机的增益。 信号处理模块被配置为处理在调整后的增益的第一帧之后的信号中的第二帧。
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4.发明授权公开(公告)号：US09247507B1
公开(公告)日：2016-01-26
申请号：US14691131
申请日：2015-04-20
发明人： Jihwan P. Choi , Hui-Ling Lou , Ying Cai , Leilei Song , Vladan Petrovic
CPC分类号： H04B7/0486 , H04W52/26 , H04W52/265 , H04W52/346 , H04W52/38 , H04W72/0453 , H04W84/12
摘要： Apparatus having corresponding methods and computer-readable media comprise: a transmitter configured to transmit, according to a first protocol, first wireless signals in a first frequency band; and a receiver configured to receive, according to a second protocol, second wireless signals in a second frequency band, wherein the second frequency band is adjacent to or overlaps the first frequency band; and an arbiter configured to allow the transmitter to transmit the first wireless signals according to the first protocol while the receiver receives the second wireless signals according to the second protocol responsive to at least one of i) a signal power level of the first wireless signals being less than a first signal power threshold; and ii) a signal power level of the second wireless signals being greater than a second signal power threshold.
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5.发明授权Method and apparatus for performing run-time compensation of I/Q mismatch in a baseband signal 有权用于在基带信号中执行I / Q失配的运行时间补偿的方法和装置公开(公告)号：US09231633B1
公开(公告)日：2016-01-05
申请号：US14643466
申请日：2015-03-10
发明人： Vladan Petrovic
CPC分类号： H04B1/30 , H04B2001/305
摘要： A downconversion downconverts a received signal. The downconverted signal includes IQ mismatch. A compensation module generates a compensated signal based on (i) the downconverted signal and (ii) an IQ mismatch compensation value. First and second mixers mix the compensated withal with first and second oscillating signals, respectively. First and second Fast Fourier Transform (FFT) modules perform FFTs on outputs of the first and second mixers to generate a first and second FFT signals, respectively. An IQ mismatch estimation module captures portions of the first and second FFT signals generated in response to the received signal including a first and second predetermined sequences. The IQ mismatch estimation module generates the IQ mismatch compensation value based on: the portions of the first and second FFT signals; the first predetermined sequence; and the second predetermined sequence.
摘要翻译： 下变频下变频接收信号。 下变频信号包括IQ失配。 补偿模块基于（i）下变频信号和（ii）IQ失配补偿值来产生补偿信号。 第一和第二混频器分别将补偿后的信号与第一和第二振荡信号混合。 第一和第二快速傅里叶变换（FFT）模块对第一和第二混频器的输出执行FFT以分别产生第一和第二FFT信号。 IQ失配估计模块捕获响应于包括第一和第二预定序列的接收信号而生成的第一和第二FFT信号的部分。 IQ失配估计模块基于：第一和第二FFT信号的部分产生IQ失配补偿值; 第一预定序列; 和第二预定序列。
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6.发明授权Devices for coexistence of transmitters and receivers operating based on different wireless protocols 有权用于基于不同无线协议操作的发射机和接收机共存的设备公开(公告)号：US09444537B1
公开(公告)日：2016-09-13
申请号：US15000175
申请日：2016-01-19
发明人： Jihwan P. Choi , Hui-Ling Lou , Ying Cai , Leilei Song , Vladan Petrovic
CPC分类号： H04B7/0486 , H04W52/26 , H04W52/265 , H04W52/346 , H04W52/38 , H04W72/0453 , H04W84/12
摘要： A device including a transmitter, a receiver and an arbiter. The transmitter transmits a first signal. The first signal has a fundamental frequency in a first frequency band of a first wireless protocol. The receiver receives a second signal. The second signal has a fundamental frequency in a second frequency band of a second wireless protocol. The first frequency band is adjacent to or at least partially overlaps the second frequency band. The arbiter allows the transmitter to transmit the first signal in the first frequency band while the receiver receives the second signal in the second frequency band. The arbiter also, if a power level of the first signal is less than a first threshold, changes: a modulation and coding scheme of the transmitter for the first signal; a modulation and coding scheme of the receiver for the second signal; or a multiple input and multiple output rank.
摘要翻译： 一种包括发射机，接收机和仲裁器的设备。 发射机发射第一个信号。 第一信号在第一无线协议的第一频带中具有基频。 接收器接收第二信号。 第二信号在第二无线协议的第二频带中具有基频。 第一频带与第二频带相邻或至少部分重叠。 仲裁器允许发射机在第一频带中发送第一信号，同时接收器接收第二频带中的第二信号。 如果第一信号的功率电平小于第一阈值，则仲裁器还改变：用于第一信号的发射机的调制和编码方案; 用于第二信号的接收机的调制和编码方案; 或多输入和多输出等级。
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公开(公告)号：US09407481B1
公开(公告)日：2016-08-02
申请号：US14070712
申请日：2013-11-04
发明人： Vladan Petrovic , Yakun Sun , Jungwon Lee
IPC分类号： H04L27/06
CPC分类号： H04L1/0052 , H04B7/0891 , H04L1/0046 , H04L1/0061 , H04L1/0067 , H04L1/0075 , H04L1/08 , H04L5/0053 , H04L5/0091 , H04L25/03891 , H04L27/06
摘要： Systems and methods for performing efficient blind decoding. A first plurality of decision metrics corresponding to a first repetition of periodic decoding information is stored. The first plurality of decision metrics is grouped into sequential portions. A plurality of combined versions of the sequential portions is stored into combining buffers arranged in sequence. Each combined version is associated with a different sequence of timing information. A first of the plurality of combined versions stored in a first of the combining buffers is combined with a second version of a second plurality of decision metrics that corresponds to a second repetition of the periodic decoding information. The second version is associated with timing information adjacent in the timing information sequence to the timing information associated with the first combined version. The data is decoded based on information in the combining buffers.
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公开(公告)号：US09838156B1
公开(公告)日：2017-12-05
申请号：US15206837
申请日：2016-07-11
发明人： Vladan Petrovic , Yakun Sun , Jungwon Lee
IPC分类号： H04L1/00
CPC分类号： H04L1/0052 , H04B7/0891 , H04L1/0046 , H04L1/0061 , H04L1/0067 , H04L1/0075 , H04L1/08 , H04L5/0053 , H04L5/0091 , H04L25/03891 , H04L27/06
摘要： Systems and methods for performing efficient blind decoding. A first plurality of decision metrics corresponding to a first repetition of periodic decoding information is stored. The first plurality of decision metrics is grouped into sequential portions. A plurality of combined versions of the sequential portions is stored into combining buffers arranged in sequence. Each combined version is associated with a different sequence of timing information. A first of the plurality of combined versions stored in a first of the combining buffers is combined with a second version of a second plurality of decision metrics that corresponds to a second repetition of the periodic decoding information. The second version is associated with timing information adjacent in the timing information sequence to the timing information associated with the first combined version. The data is decoded based on information in the combining buffers.
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9.发明授权Method and apparatus for assessing a condition of a wireless channel in view of feedback under strong and sporadic interference received over the wireless channel 有权考虑到通过无线信道接收的强和零星干扰下的反馈来评估无线信道的状况的方法和装置公开(公告)号：US09596615B1
公开(公告)日：2017-03-14
申请号：US14319552
申请日：2014-06-30
发明人： Yakun Sun , Leilei Song , Hui-Ling Lou , Vladan Petrovic , Yi-Ling Chao
CPC分类号： H04B17/336 , H04L1/0026
摘要： A wireless communication device including an interference module and a feedback generation module. The interference module is configured to detect interference on a communication channel, identify types of the interference detected on the communication channel, and provide information about the types of the interference detected on the communication channel. The feedback generation module is configured to receive a request, from a transmitter, for feedback about a condition of the communication channel, and, based on the request and the information about the types of the interference detected on the communication channel, determine a measurement region of the communication channel, generate the feedback about the condition of the communication channel using measurements taken, by a receiver, in the measurement region as determined by the feedback generation module, and provide the feedback to the transmitter.
摘要翻译： 一种包括干扰模块和反馈生成模块的无线通信设备。 干扰模块被配置为检测通信信道上的干扰，识别在通信信道上检测到的干扰类型，并提供关于在通信信道上检测到的干扰的类型的信息。 反馈生成模块被配置为从发送器接收关于通信信道的状况的反馈的请求，并且基于该请求和关于在通信信道上检测到的干扰的类型的信息，确定测量区域 通过接收机在由反馈生成模块确定的测量区域中进行的测量产生关于通信信道条件的反馈，并将反馈提供给发射机。
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10.发明授权System and method for estimating noise in a wireless signal using order statistics in the time domain 有权使用时域中的顺序统计来估计无线信号中的噪声的系统和方法公开(公告)号：US09277421B1
公开(公告)日：2016-03-01
申请号：US14558770
申请日：2014-12-03
发明人： Vladan Petrovic , Christian R. Berger , Zhipei Chi
CPC分类号： H04W24/00 , H04B1/1036 , H04B15/00 , H04B17/354 , H04W52/225
摘要： Systems, methods, and other embodiments associated with estimating noise in a receiver device based on related properties of order statistics are described. According to one embodiment, a method includes generating an initial set of magnitude squared values from a time domain impulse response of a receiver device. The method also includes generating an initial noise power estimate based on a modified set of magnitude squared values and generating a threshold value based on the initial noise power estimate. The method generates a final noise power estimate by averaging values of the initial set of magnitude squared values that are less than the threshold value and removing a thresholding bias from the resulting average.
摘要翻译： 描述了基于订单统计的相关属性来估计接收机设备中的噪声的系统，方法和其它实施例。 根据一个实施例，一种方法包括从接收机设备的时域脉冲响应生成初始的幅度平方值集合。 该方法还包括基于经修改的幅度平方值的值生成初始噪声功率估计，并且基于初始噪声功率估计生成阈值。 该方法通过平均小于阈值的初始的幅度平方值的值来产生最终噪声功率估计，并从所得到的平均值中去除阈值偏差。
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