公开(公告)号：US20120131080A1

公开(公告)日：2012-05-24

申请号：US12952193

申请日：2010-11-22

申请人： Maged F. Barsoum ,  Jinwen Xi ,  Dariush Dabiri

发明人： Maged F. Barsoum ,  Jinwen Xi ,  Dariush Dabiri

IPC分类号： G06F17/10

CPC分类号： H03H17/04 ,  H03H2218/06

摘要： Methods and systems for multi-input IIR filters with error feedback are disclosed. By using multiple-inputs to generate multiple outputs during each iteration, a multi-input IIR filter in accordance with the present invention has greatly increased throughput. Furthermore, the addition of a multi-variable error feedback unit in accordance with the present invention in a multiple-input IIR filter can greatly increase the accuracy of the multi-variable IIR Filter.

摘要翻译： 公开了具有误差反馈的多输入IIR滤波器的方法和系统。 通过在每次迭代期间通过使用多输入来产生多个输出，根据本发明的多输入IIR滤波器大大提高了吞吐量。 此外，在多输入IIR滤波器中添加根据本发明的多变量误差反馈单元可以大大提高多变量IIR滤波器的精度。

公开(公告)号：US08645446B2

公开(公告)日：2014-02-04

申请号：US12952193

申请日：2010-11-22

申请人： Maged F. Barsoum ,  Jinwen Xi ,  Dariush Dabiri

发明人： Maged F. Barsoum ,  Jinwen Xi ,  Dariush Dabiri

IPC分类号： G06F17/10

CPC分类号： H03H17/04 ,  H03H2218/06

摘要： Methods and systems for multi-input IIR filters with error feedback are disclosed. By using multiple-inputs to generate multiple outputs during each iteration, a multi-input IIR filter in accordance with the present invention has greatly increased throughput. Furthermore, the addition of a multi-variable error feedback unit in accordance with the present invention in a multiple-input IIR filter can greatly increase the accuracy of the multi-variable IIR Filter.

摘要翻译： 公开了具有误差反馈的多输入IIR滤波器的方法和系统。 通过在每次迭代期间通过使用多输入来产生多个输出，根据本发明的多输入IIR滤波器大大提高了吞吐量。 此外，在多输入IIR滤波器中添加根据本发明的多变量误差反馈单元可以大大提高多变量IIR滤波器的精度。

公开(公告)号：US08472514B2

公开(公告)日：2013-06-25

申请号：US12952178

申请日：2010-11-22

申请人： Dariush Dabiri ,  Maged F. Barsoum

发明人： Dariush Dabiri ,  Maged F. Barsoum

IPC分类号： H03H7/30

CPC分类号： H03H21/0021 ,  H03H21/0012

摘要： A circuit and method perform adaptive spectral enhancement at a frequency ω1 (also called “fundamental” frequency) on an input signal y which includes electromagnetic interference (EMI) at an unknown frequency, to generate a fundamental-enhanced signal φ1 (or its complement). The fundamental-enhanced signal φ1 (or complement) is thereafter used in a notching circuit (also called “fundamental notching” circuit) to generate a fundamental-notched signal y−φ1. The fundamental-notched signal y−φ1 is itself enhanced to generate a harmonic-enhanced signal φ2 that is used to notch the fundamental-notched signal y−φ1 again, in one or more additional notching circuits that are connected in series with the fundamental notching circuit. The result (“cascaded-harmonic-notched” signal) is relatively free of EMI noise (fundamental and harmonics), and is used as an error signal for an adaptation circuit that in turn identifies the fundamental frequency ω1. Use of a cascaded-harmonic-notched signal as the error signal improves speed of convergence of adaptation.

摘要翻译： 电路和方法在包括未知频率的电磁干扰（EMI）的输入信号y上以频率ω1（也称为“基本”频率）执行自适应频谱增强，以产生基本增强信号phi1（或其补码） 。 此后，在开槽电路（也称为“基本陷波”电路）中使用基本增强信号phi1（或补码）以产生基本缺陷信号y-phi1。 基本缺陷信号y-phi1本身被增强以产生用于在与基本开槽串联连接的一个或多个额外的开槽电路中再次陷波基波切割信号y-phi1的谐波增强信号phi2 电路。 结果（“级联谐波陷波”信号）相对没有EMI噪声（基波和谐波），并被用作自适应电路的误差信号，自适应电路又识别基频ω1。 使用级联谐波陷波信号作为误差信号提高适应性收敛速度。

公开(公告)号：US20120014487A1

公开(公告)日：2012-01-19

申请号：US12952184

申请日：2010-11-22

申请人： Dariush Dabiri ,  Maged F. Barsoum

发明人： Dariush Dabiri ,  Maged F. Barsoum

IPC分类号： H04B1/10

CPC分类号： H03H21/0021 ,  H03H21/0012

摘要： An input signal that includes narrowband interference is spectrally enhanced by an adaptive circuit that supplies as output signal(s), portion(s) of NBI at one or more frequencies that change adaptively. The output signal(s) are used in one or more tone predictor(s) to generate, based on prior values of the NBI portion, one or more predicted tone signals that are subtracted from a received signal containing the NBI, and the result is used in the normal manner, e.g. decoded. The adaptive circuit and the one or more tone predictor(s), form a feed-forward NBI predictor wherein the received signal is supplied as the input signal of the adaptive circuit. The result of subtraction may be supplied to a slicer that slices the result, yielding a sliced signal which is subtracted from the received signal to generate a signal can be used as the input signal, to implement a feedback NBI predictor.

摘要翻译： 包括窄带干扰的输入信号由自适应电路进行光谱增强，该自适应电路以自适应变化的一个或多个频率提供NBI的一部分或多个输出信号。 在一个或多个音调预测器中使用输出信号以根据NBI部分的先前值生成从包含NBI的接收信号中减去的一个或多个预测音调信号，并且结果是 以正常方式使用，例如 解码。 自适应电路和一个或多个音调预测器形成前馈NBI预测器，其中接收信号作为自适应电路的输入信号提供。 减法的结果可以被提供给分片器的分片器，产生从接收信号中减去生成信号的分片信号可以用作输入信号，以实现反馈NBI预测器。

公开(公告)号：US20120013398A1

公开(公告)日：2012-01-19

申请号：US12952178

申请日：2010-11-22

申请人： Dariush Dabiri ,  Maged F. Barsoum

发明人： Dariush Dabiri ,  Maged F. Barsoum

IPC分类号： H03K5/1252

CPC分类号： H03H21/0021 ,  H03H21/0012

摘要： A circuit and method perform adaptive spectral enhancement at a frequency ω1 (also called “fundamental” frequency) on an input signal y which includes electromagnetic interference (EMI) at an unknown frequency, to generate a fundamental-enhanced signal φ1 (or its complement). The fundamental-enhanced signal φ1 (or complement) is thereafter used in a notching circuit (also called “fundamental notching” circuit) to generate a fundamental-notched signal y−φ1. The fundamental-notched signal y−φ1 is itself enhanced to generate a harmonic-enhanced signal φ2 that is used to notch the fundamental-notched signal y−φ1 again, in one or more additional notching circuits that are connected in series with the fundamental notching circuit. The result (“cascaded-harmonic-notched” signal) is relatively free of EMI noise (fundamental and harmonics), and is used as an error signal for an adaptation circuit that in turn identifies the fundamental frequency ω1. Use of a cascaded-harmonic-notched signal as the error signal improves speed of convergence of adaptation.

摘要翻译： 电路和方法在包括未知频率的电磁干扰（EMI）的输入信号y上对频率ω1（也称为“基本”频率）执行自适应频谱增强，以产生基本增强信号＆phgr; 1（或其 补充）。 1，然后在切口电路（也称为“基本陷波”电路）中使用基本增强的信号＆amp; 1（或补码）以产生基本缺口信号y-＆phgr; 1。 基本缺陷信号y-＆phgr; 1本身被增强以产生用于在连接的一个或多个附加的开槽电路中再次陷入基本缺口信号y-＆phgr 1的谐波增强信号 与基本的开槽电路串联。 结果（“级联谐波陷波”信号）相对没有EMI噪声（基波和谐波），并被用作自适应电路的误差信号，自适应电路进而识别基频ω1。 使用级联谐波陷波信号作为误差信号提高适应性收敛速度。

公开(公告)号：US08638892B2

公开(公告)日：2014-01-28

申请号：US12952184

申请日：2010-11-22

申请人： Dariush Dabiri ,  Maged F. Barsoum

发明人： Dariush Dabiri ,  Maged F. Barsoum

IPC分类号： H04B1/10

CPC分类号： H03H21/0021 ,  H03H21/0012

摘要： An input signal that includes narrowband interference is spectrally enhanced by an adaptive circuit that supplies as output signal(s), portion(s) of NBI at one or more frequencies that change adaptively. The output signal(s) are used in one or more tone predictor(s) to generate, based on prior values of the NBI portion, one or more predicted tone signals that are subtracted from a received signal containing the NBI, and the result is used in the normal manner, e.g. decoded. The adaptive circuit and the one or more tone predictor(s), form a feed-forward NBI predictor wherein the received signal is supplied as the input signal of the adaptive circuit. The result of subtraction may be supplied to a slicer that slices the result, yielding a sliced signal which is subtracted from the received signal to generate a signal can be used as the input signal, to implement a feedback NBI predictor.

摘要翻译： 包括窄带干扰的输入信号由自适应电路进行光谱增强，该自适应电路以自适应变化的一个或多个频率提供NBI的一部分或多个输出信号。 在一个或多个音调预测器中使用输出信号以根据NBI部分的先前值生成从包含NBI的接收信号中减去的一个或多个预测音调信号，并且结果是 以正常方式使用，例如 解码。 自适应电路和一个或多个音调预测器形成前馈NBI预测器，其中接收信号作为自适应电路的输入信号提供。 减法的结果可以被提供给分片器的分片器，产生从接收信号中减去生成信号的分片信号可以用作输入信号，以实现反馈NBI预测器。

公开(公告)号：US20130083862A1

公开(公告)日：2013-04-04

申请号：US13618630

申请日：2012-09-14

申请人： Maged F. Barsoum ,  Christopher R. Jones

发明人： Maged F. Barsoum ,  Christopher R. Jones

IPC分类号： H04B15/00

CPC分类号： H04W24/02 ,  H04B15/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/3405 ,  H04L27/3483

摘要： Communication systems are described that use geometrically shaped constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. In several embodiments, the geometrically shaped is optimized based upon a capacity measure such as parallel decoding capacity or joint capacity. In many embodiments, a capacity optimized geometrically shaped constellation can be used to replace a conventional constellation as part of a firmware upgrade to transmitters and receivers within a communication system. In a number of embodiments, the geometrically shaped constellation is optimized for an Additive White Gaussian Noise channel or a fading channel. In numerous embodiments, the communication uses adaptive rate encoding and the location of points within the geometrically shaped constellation changes as the code rate changes.

摘要翻译： 描述了与在类似SNR频带内操作的常规星座相比，使用具有增加的容量的几何形状星座的通信系统。 在几个实施例中，基于诸如并行解码容量或联合容量的容量测量来优化几何形状。 在许多实施例中，可以使用容量优化的几何形状的星座来代替传统的星座作为固件升级到通信系统内的发射机和接收机的一部分。 在多个实施例中，针对加性高斯白噪声信道或衰落信道对几何形状的星座进行了优化。 在许多实施例中，通信使用自适应速率编码和几何形状星座中的点的位置随着码率的变化而改变。

公开(公告)号：US20110228869A1

公开(公告)日：2011-09-22

申请号：US13118921

申请日：2011-05-31

申请人： Maged F. Barsoum ,  Christoper R. Jones

发明人： Maged F. Barsoum ,  Christoper R. Jones

IPC分类号： H04B15/00 ,  H04L23/02 ,  H04L27/10

CPC分类号： H04W24/02 ,  H04B15/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/3405 ,  H04L27/3483

摘要： Communication systems are described that use geometrically shaped constellations that have increased capacity compared to conventional constellations operating within a similar SNR band. In several embodiments, the geometrically shaped is optimized based upon a capacity measure such as parallel decoding capacity or joint capacity. In many embodiments, a capacity optimized geometrically shaped constellation can be used to replace a conventional constellation as part of a firmware upgrade to transmitters and receivers within a communication system. In a number of embodiments, the geometrically shaped constellation is optimized for an Additive White Gaussian Noise channel or a fading channel. In numerous embodiments, the communication uses adaptive rate encoding and the location of points within the geometrically shaped constellation changes as the code rate changes. One embodiment of the invention includes a transmitter configured to transmit signals to a receiver via a communication channel, wherein the transmitter, includes a coder configured to receive user bits and output encoded bits at an expanded output encoded bit rate, a mapper configured to map encoded bits to symbols in a symbol constellation, a modulator configured to generate a signal for transmission via the communication channel using symbols generated by the mapper. In addition, the receiver includes a demodulator configured to demodulate the received signal via the communication channel, a demapper configured to estimate likelihoods from the demodulated signal, a decoder that is configured to estimate decoded bits from the likelihoods generated by the demapper. Furthermore, the symbol constellation is a capacity optimized geometrically spaced symbol constellation that provides a given capacity at a reduced signal-to-noise ratio compared to a signal constellation that maximizes dmin.

摘要翻译： 描述了与在类似SNR频带内操作的常规星座相比，使用具有增加的容量的几何形状星座的通信系统。 在几个实施例中，基于诸如并行解码容量或联合容量的容量测量来优化几何形状。 在许多实施例中，可以使用容量优化的几何形状的星座来代替传统的星座作为固件升级到通信系统内的发射机和接收机的一部分。 在多个实施例中，针对加性高斯白噪声信道或衰落信道对几何形状的星座进行了优化。 在许多实施例中，通信使用自适应速率编码和几何形状星座中的点的位置随着码率的变化而改变。 本发明的一个实施例包括：发射机，被配置为经由通信信道向接收机发送信号，其中所述发射机包括被配置为以扩展的输出编码比特率接收用户比特并输出编码比特的编码器，配置成映射编码的 比特到符号星座中的符号，调制器被配置为生成用于通过通信信道传输的信号，使用由映射器产生的符号。 此外，接收机包括被配置为经由通信信道解调接收信号的解调器，被配置为从解调信号估计似然性的解映射器，被配置为从由解映射器生成的似然值估计解码比特的解码器。 此外，符号星座是容量优化的几何间隔的符号星座，与最大化dmin的信号星座相比，以降低的信噪比提供给定容量。

公开(公告)号：US07978777B2

公开(公告)日：2011-07-12

申请号：US12156989

申请日：2008-06-05

申请人： Maged F. Barsoum ,  Christopher R. Jones

发明人： Maged F. Barsoum ,  Christopher R. Jones

IPC分类号： H04L5/12

CPC分类号： H04W24/02 ,  H04B15/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/3405 ,  H04L27/3483

摘要： Communication systems having transmitter, includes a coder configured to receive user bits and output encoded bits at an expanded output encoded bit rate, a mapper configured to map encoded bits to symbols in a symbol constellation, a modulator configured to generate a signal for transmission via the communication channel using symbols generated by the mapper. In addition, the receiver includes a demodulator configured to demodulate the received signal via the communication channel, a demapper configured to estimate likelihoods from the demodulated signal, a decoder that is configured to estimate decoded bits from the likelihoods generated by the demapper. Furthermore, the symbol constellation is a capacity optimized geometrically spaced symbol constellation that provides a given capacity at a reduced signal-to-noise ratio compared to a signal constellation that maximizes dmin.

摘要翻译： 具有发射机的通信系统包括：编码器，被配置为以扩展的输出编码比特率接收用户比特并输出编码比特;映射器，被配置为将编码的比特映射到符号星座图中的符号;调制器，被配置为产生经由 通信通道使用由映射器生成的符号。 此外，接收机包括被配置为经由通信信道解调接收信号的解调器，被配置为从解调信号估计似然性的解映射器，被配置为从由解映射器生成的似然值估计解码比特的解码器。 此外，符号星座是容量优化的几何间隔的符号星座，与最大化dmin的信号星座相比，以降低的信噪比提供给定容量。

公开(公告)号：US20090041135A1

公开(公告)日：2009-02-12

申请号：US11834712

申请日：2007-08-07

申请人： Mahmoud H. Ismail ,  Waleed Younis ,  Maged F. Barsoum ,  Nabil Yousef

发明人： Mahmoud H. Ismail ,  Waleed Younis ,  Maged F. Barsoum ,  Nabil Yousef

IPC分类号： H04L27/28

CPC分类号： H04L27/2656 ,  H04L27/2678

摘要： Detecting Null symbols in a video data frame comprises sending OFDM symbols through a sliding windowed correlation process having a correlation window length proportional to a cyclic prefix length and a delay equal to a FFT size of the symbols, wherein output peaks of the process occur where two similar portions of the symbols coincide; checking peaks in windows sized equal to a duration of a symbol; determining whether the peaks are located in the middle of the windows; determining whether a shift has occurred in the location of the peak of a current window compared to in a second immediately previous window; determining whether the peak in a first immediately previous window is weak compared to that in a second immediately previous window; and declaring that a Null symbol exists in the first previous window when the shift has occurred and the determination of a weak peak exists.

摘要翻译： 检测视频数据帧中的空符号包括通过具有与循环前缀长度成比例的相关窗口长度和等于符号的FFT大小的延迟的滑动窗口相关处理来发送OFDM符号，其中过程的输出峰值发生在两个 符号的相似部分重合; 检查窗口大小等于符号持续时间的峰值; 确定峰是否位于窗的中间; 确定当前窗口的峰值位置与第二个紧接在前的窗口相比是否发生位移; 确定在第一紧邻前一窗口中的峰值是否比在第二紧接的前一窗口中的峰值弱; 并且当发生移位并且存在弱峰值的确定时，声明在第一先前窗口中存在空符号。