公开(公告)号：US08331508B2

公开(公告)日：2012-12-11

申请号：US12952150

申请日：2010-11-22

申请人： Dariush Dabiri

发明人： Dariush Dabiri

IPC分类号： H03D1/04

CPC分类号： H03H21/0021 ,  H03H21/0012

摘要： A narrowband interference (NBI) canceller is coupled to an A/D converter to receive an input signal and supply an NBI-canceled signal to an error correcting decoder. In the NBI canceller, a first arithmetic unit receives the input signal and a predicted-interference signal, and supplies a difference thereof as the interference-canceled signal. A slicer receives the interference-canceled signal and supplies a decision signal. A second arithmetic unit subtracts the decision signal from the input signal to generate a noise signal. A coarse frequency estimator receives the noise signal and analyzes the frequency spectrum to generate a coarse estimate of a fundamental frequency of the NBI. The coarse estimate is used by an adaptive narrowband interference predictor to generate the predicted-interference signal while adaptively tracking the narrowband interference. Use of the NBI canceller in a transceiver can eliminate link drop caused by operation of wireless devices that generate EMI in a cable.

摘要翻译： 窄带干扰（NBI）消除器耦合到A / D转换器以接收输入信号，并向纠错解码器提供NBI消除的信号。 在NBI消除器中，第一算术单元接收输入信号和预测干扰信号，并将其差作为干扰消除信号。 切片器接收干扰消除信号并提供判决信号。 第二算术单元从输入信号中减去判定信号以产生噪声信号。 粗略频率估计器接收噪声信号并分析频谱以产生NBI的基频的粗略估计。 自适应窄带干扰预测器使用粗略估计来产生预测干扰信号，同时自适应地跟踪窄带干扰。 在收发器中使用NBI消除器可以消除在电缆中产生EMI的无线设备的操作造成的链路丢失。

公开(公告)号：US08279912B2

公开(公告)日：2012-10-02

申请号：US11373928

申请日：2006-03-13

申请人： Dariush Dabiri ,  Jose Tellado ,  Sandeep Kumar Gupta

发明人： Dariush Dabiri ,  Jose Tellado ,  Sandeep Kumar Gupta

IPC分类号： H04B1/38 ,  H04B1/40 ,  H03K9/00

CPC分类号： H04L5/1423 ,  H04B3/23

摘要： Embodiments of a method and apparatus for reducing non-linear transmit signal components of a receive signal of a transceiver signal are disclosed. The method includes the transceiver simultaneously transmitting a transmit signal, and receiving the receive signal. A non-linear replica signal of non-linear transmission signal components that are created in the transceiver by a transmit signal DAC, and imposed onto the receive signal, is generated. The non-linear replica signal is subtracted from the received signal reducing the non-linear transmission signal components imposed onto the receive signal.

摘要翻译： 公开了一种用于减少收发信机的接收信号的非线性发送信号分量的方法和装置的实施例。 该方法包括收发机同时发送发送信号，并接收接收信号。 产生通过发送信号DAC在收发器中产生且施加到接收信号上的非线性传输信号分量的非线性复制信号。 从接收到的信号中减去非线性复制信号，减少施加在接收信号上的非线性传输信号分量。

公开(公告)号：US08248170B2

公开(公告)日：2012-08-21

申请号：US12952154

申请日：2010-11-22

申请人： Dariush Dabiri ,  Dongwoon Bai ,  Nils Graef ,  Wenwei Pan

发明人： Dariush Dabiri ,  Dongwoon Bai ,  Nils Graef ,  Wenwei Pan

IPC分类号： H03K3/03

CPC分类号： G06F1/022

摘要： A stabilized quadrature oscillator providing consistently high signal quality is disclosed. The stabilized quadrature oscillator includes an iterative quadrature oscillator and a quadrature signal stabilizer. The iterative quadrature oscillator generates an iterative cosine signal and an iterative sine signal using a stabilized cosine signal and a stabilized sine signal from the quadrature signal stabilizer. The quadrature signal stabilizer generates the stabilized cosine signal and the stabilized sine signal based on an energy measure of the iterative cosine signal and the iterative sine signal. Specifically, if the energy measure is less than a low threshold then the quadrature signal stabilizer generates the stabilized sine signal and the stabilized cosine signal to have a greater magnitude than the iterative sine signal and the iterative cosine signal, respectively. Conversely, if the energy measure is greater than a high threshold then the quadrature signal stabilizer generates the stabilized sine signal and the stabilized cosine signal to have a lesser magnitude than the iterative sine signal and the iterative cosine signal, respectively.

摘要翻译： 公开了一种提供一致的高信号质量的稳定的正交振荡器。 稳定的正交振荡器包括迭代正交振荡器和正交信号稳定器。 迭代正交振荡器使用稳定余弦信号和来自正交信号稳定器的稳定正弦信号产生迭代余弦信号和迭代正弦信号。 正交信号稳定器基于迭代余弦信号和迭代正弦信号的能量测量值产生稳定的余弦信号和稳定的正弦信号。 具体地说，如果能量测量小于低阈值，则正交信号稳定器分别产生稳定的正弦信号和稳定的余弦信号，以具有比迭代正弦信号和迭代余弦信号更大的幅度。 相反，如果能量测量值大于高阈值，则正交信号稳定器分别产生稳定正弦信号和稳定余弦信号，其幅度分别小于迭代正弦信号和迭代余弦信号。

公开(公告)号：US20120126903A1

公开(公告)日：2012-05-24

申请号：US12952154

申请日：2010-11-22

申请人： Dariush Dabiri ,  Dongwoon Bai ,  Nils Graef ,  Wenwei Pan

发明人： Dariush Dabiri ,  Dongwoon Bai ,  Nils Graef ,  Wenwei Pan

IPC分类号： H03B27/00

CPC分类号： G06F1/022

摘要： A stabilized quadrature oscillator providing consistently high signal quality is disclosed. The stabilized quadrature oscillator includes an iterative quadrature oscillator and a quadrature signal stabilizer. The iterative quadrature oscillator generates an iterative cosine signal and an iterative sine signal using a stabilized cosine signal and a stabilized sine signal from the quadrature signal stabilizer. The quadrature signal stabilizer generates the stabilized cosine signal and the stabilized sine signal based on an energy measure of the iterative cosine signal and the iterative sine signal. Specifically, if the energy measure is less than a low threshold then the quadrature signal stabilizer generates the stabilized sine signal and the stabilized cosine signal to have a greater magnitude than the iterative sine signal and the iterative cosine signal, respectively. Conversely, if the energy measure is greater than a high threshold then the quadrature signal stabilizer generates the stabilized sine signal and the stabilized cosine signal to have a lesser magnitude than the iterative sine signal and the iterative cosine signal, respectively.

摘要翻译： 公开了一种提供一致的高信号质量的稳定的正交振荡器。 稳定的正交振荡器包括迭代正交振荡器和正交信号稳定器。 迭代正交振荡器使用稳定余弦信号和来自正交信号稳定器的稳定正弦信号产生迭代余弦信号和迭代正弦信号。 正交信号稳定器基于迭代余弦信号和迭代正弦信号的能量测量值产生稳定的余弦信号和稳定的正弦信号。 具体地说，如果能量测量小于低阈值，则正交信号稳定器分别产生稳定的正弦信号和稳定的余弦信号，以具有比迭代正弦信号和迭代余弦信号更大的幅度。 相反，如果能量测量值大于高阈值，则正交信号稳定器分别产生稳定正弦信号和稳定余弦信号，其幅度分别小于迭代正弦信号和迭代余弦信号。

公开(公告)号：US07747923B2

公开(公告)日：2010-06-29

申请号：US10926699

申请日：2004-08-26

申请人： Dariush Dabiri ,  Jose Tellado

发明人： Dariush Dabiri ,  Jose Tellado

IPC分类号： H03M13/00

CPC分类号： H03M13/37 ,  H04L1/0045 ,  H04L1/0057

摘要： Embodiments of a method and apparatus for a transceiver decoding an Ethernet signal. The method includes receiving an Ethernet bit stream. The bit stream is at least one of low-complexity decoded by a low-complexity decoder of the transceiver or high-complexity decoded by a high-complexity decoder of the transceiver. If the bit stream fails a low-complexity decoding test, then the bit stream is high-complexity decoded. The low-complexity decoding and high complexity decoding are iteratively repeated until the bit stream passes the low-complexity decoding test.

摘要翻译： 用于收发器解码以太网信号的方法和装置的实施例。 该方法包括接收以太网比特流。 比特流是由收发器的低复杂度解码器解码的低复杂度中的至少一个或由收发器的高复杂度解码器解码的高复杂度的至少一个。 如果比特流失败了低复杂度的解码测试，则比特流是高复杂度的解码。 迭代重复低复杂度解码和高复杂度解码，直到比特流通过低复杂度解码测试。

公开(公告)号：US20090238102A1

公开(公告)日：2009-09-24

申请号：US12077672

申请日：2008-03-20

申请人： Dariush Dabiri

发明人： Dariush Dabiri

IPC分类号： H04B3/20

CPC分类号： H04B3/231

摘要： Embodiments of a method and apparatus for generating an estimated non-linear echo signal are disclosed. One method includes receiving a plurality of data inputs. The plurality of data inputs are partitioned into subsets. A weight vector is computed for each of the subsets. A vector of addresses to memory locations is computed for each of the subsets. Values of interpolants are accessed at the memory locations (interpolation sites) based on the vector of addresses for each of the subsets. The estimated non-linear echo signal based is calculated on the values of the interpolants and the weight vector corresponding to each subset.

摘要翻译： 公开了一种用于产生估计的非线性回波信号的方法和装置的实施例。 一种方法包括接收多个数据输入。 多个数据输入被划分成子集。 为每个子集计算权重向量。 为每个子集计算地址到存储器位置的向量。 基于每个子集的地址向量，在存储器位置（内插位置）访问内插器的值。 基于对应于每个子集的内插值和权重向量的值计算基于估计的非线性回波信号。

公开(公告)号：US20060218458A1

公开(公告)日：2006-09-28

申请号：US11090109

申请日：2005-03-25

申请人： Dariush Dabiri ,  Nitin Barot

发明人： Dariush Dabiri ,  Nitin Barot

IPC分类号： H03M13/00

CPC分类号： H03M13/1137 ,  H03M13/1111 ,  H03M13/114

摘要： Embodiments of a method and apparatus for decoding signals are disclosed. The method includes receiving modulated signals, generating bits representing the signals, and associated reliability of each bit. The method further includes executing a first stage of decoding the bits using a first component code, and simultaneously executing the first stage of decoding again using a second component code, and executing a second stage of decoding using the first component code. The first and second stages of decoding are used to generate the bit stream. Another method includes receiving modulated signals, generating bits representing the signals, and associated reliability of each bit. The method further includes executing a first stage of N stages for decoding the bits, the first stage using a first of M component codes, and simultaneously executing a plurality of the N stages of decoding, each of the plurality of N stages using a different one of the M component codes. The plurality of N stages of decoding are used to generate the bit stream.

公开(公告)号：US06009446A

公开(公告)日：1999-12-28

申请号：US18185

申请日：1998-02-04

申请人： Dariush Dabiri

发明人： Dariush Dabiri

IPC分类号： H03H17/02 ,  G06F17/10

CPC分类号： H03H17/02

摘要： Digital filtration is accomplished by splitting the incoming signal into phases. Each phase is then converted into a weighted sum reflecting the design of a prototype filter. Then the data is again split into phases at which time specific points may be interpolated and the data accumulated until a filtered signal has resulted. All of the steps can be easily modified after manufacture so that the filtration can handle variable bandwidth systems at low data rates, as well as implement a wide variety of filtering structures.

摘要翻译： 数字过滤是通过将输入信号分成相进行的。 然后将每个相转换成反映原型滤波器设计的加权和。 然后数据再次分为相位，此时可以内插特定点，并且累积数据直到滤波信号得到。 所有的步骤都可以在制造后轻松修改，以便过滤能够以低数据速率处理可变带宽系统，以及实现各种过滤结构。

公开(公告)号：US08650464B1

公开(公告)日：2014-02-11

申请号：US13225337

申请日：2011-09-02

申请人： Po Tong ,  Ivana Djurdjevic ,  Damien Latremouille ,  Francesco Caggioni ,  Dariush Dabiri

发明人： Po Tong ,  Ivana Djurdjevic ,  Damien Latremouille ,  Francesco Caggioni ,  Dariush Dabiri

IPC分类号： H03M13/00

CPC分类号： H03M13/2927 ,  H03M13/2721 ,  H03M13/2921

摘要： A circuit and method form a codeword including parity and message bits, as follows. Each codeword has a first part in a current sequence (e.g. a current OTN-row) that is to be now transmitted and second part spread across multiple past sequences (e.g. previously prepared and transmitted OTN-rows). The codewords are grouped into multiple groups such that each codeword within a group has no bit in common with another codeword in that group. Moreover, each codeword has a bit in common with a different codeword in a different group.

摘要翻译： 电路和方法形成包括奇偶校验和消息位的码字，如下。 每个码字具有当前序列（例如，当前OTN行）中的第一部分，其将被发送，并且第二部分在多个过去序列（例如，预先准备和发送的OTN行）之间扩展。 码字被分组成多个组，使得组内的每个码字不具有与该组中的另一个码字相同的位。 此外，每个码字具有与不同组中的不同码字相同的位。

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。