公开(公告)号：US08582633B2

公开(公告)日：2013-11-12

申请号：US12952172

申请日：2010-11-22

申请人： Dariush Dabiri ,  Dongwoon Bai

发明人： Dariush Dabiri ,  Dongwoon Bai

IPC分类号： H04B3/46

CPC分类号： H04B1/1027 ,  H04B17/26 ,  H04B17/345

摘要： One or more processing units confirm existence of narrow band interference in a signal by using an estimate f of the frequency, to check for one or more harmonics. In illustrative embodiments, the estimate f is automatically identified as a second harmonic if a predetermined criterion is satisfied by the signal (in the frequency domain) at either of two frequencies namely (A) frequency f/2 and (B) frequency (M−f)/2 and whichever of these two frequencies is stronger is identified as the fundamental frequency. In several such embodiments, the estimate f is automatically identified as a third harmonic if a predetermined criterion is satisfied by the signal (in the frequency domain) at any of three frequencies namely (C) frequency f/3 and (D) frequency (M−t)/3 and (E) frequency (M+f)/3. If the predetermined criteria are not met at all five frequencies (A)-(E) then f is identified as the fundamental frequency.

摘要翻译： 一个或多个处理单元通过使用频率的估计f来确认信号中的窄带干扰的存在，以检查一个或多个谐波。 在说明性实施例中，如果在两个频率（A）频率f / 2和（B）频率（Mf）中的任一个处的信号（在频域中）满足预定标准，则估计f被自动识别为二次谐波。 / 2，这两个频率中的任一个更强，被确定为基频。 在几个这样的实施例中，如果在三个频率中的任何一个（即，（C）频率f / 3和（D）频率（Mt））处的信号（在频域中）满足预定标准，则估计f被自动识别为三次谐波 ）/ 3和（E）频率（M + f）/ 3。 如果在所有五个频率（A） - （E）不满足预定标准，则f被识别为基频。

公开(公告)号：US20120128049A1

公开(公告)日：2012-05-24

申请号：US12952172

申请日：2010-11-22

申请人： Dariush Dabiri ,  Dongwoon Bai

发明人： Dariush Dabiri ,  Dongwoon Bai

IPC分类号： H04B17/00 ,  H04B1/10

CPC分类号： H04B1/1027 ,  H04B17/26 ,  H04B17/345

摘要： One or more processing units confirm existence of narrow band interference in a signal by using an estimate f of the frequency, to check for one or more harmonics. In illustrative embodiments, the estimate f is automatically identified as a second harmonic if a predetermined criterion is satisfied by the signal (in the frequency domain) at either of two frequencies namely (A) frequency f/2 and (B) frequency (M−f)/2 and whichever of these two frequencies is stronger is identified as the fundamental frequency. In several such embodiments, the estimate f is automatically identified as a third harmonic if a predetermined criterion is satisfied by the signal (in the frequency domain) at any of three frequencies namely (C) frequency f/3 and (D) frequency (M−t)/3 and (E) frequency (M+f)/3. If the predetermined criteria are not met at all five frequencies (A)-(E) then f is identified as the fundamental frequency.

摘要翻译： 一个或多个处理单元通过使用频率的估计f来确认信号中的窄带干扰的存在，以检查一个或多个谐波。 在说明性实施例中，如果在两个频率（A）频率f / 2和（B）频率（M-1）中的任一个下，信号（在频域中）满足预定标准，则估计f被自动识别为二次谐波。 f）/ 2和这两个频率之中较强者被确定为基频。 在几个这样的实施例中，如果在三个频率中的任一个（即，（C）频率f / 3和（D）频率（M））的信号（在频域中）满足预定标准，则估计f被自动识别为三次谐波 -t）/ 3和（E）频率（M + f）/ 3。 如果在所有五个频率（A） - （E）不满足预定标准，则f被识别为基频。

公开(公告)号：US20120128048A1

公开(公告)日：2012-05-24

申请号：US12952164

申请日：2010-11-22

申请人： Dariush Dabiri

发明人： Dariush Dabiri

IPC分类号： H04B17/00

CPC分类号： H04B3/46 ,  H04B17/345

摘要： One or more processing units are programmed to select from among M tones in a frequency domain representation of a signal, a set of tones including at least a strongest tone (relative to background noise) and a tone adjacent thereto. From among M complex numbers in the frequency domain representation of the signal, a set of complex numbers are identified and denoted as a vector Z, corresponding to the selected set of tones. Vector Z is then multiplied with each of M columns of a matrix G which is predetermined to identify a sub-resolution maxima in Z. The M products that result from the vector multiplication of Z and G are used to determine and store in memory at least one or both of: (A) a flag indicating presence or absence of narrowband interference in the signal; and (B) an estimate of a frequency of the narrowband interference.

摘要翻译： 一个或多个处理单元被编程为在信号的频域表示中从M个音调中选择一组音调，其包括至少最强音（相对于背景噪声）和与其相邻的音调。 在信号的频域表示中的M个复数中，识别一组复数，并将其表示为对应于所选择的一组音调的向量Z。 然后将向量Z乘以预定的矩阵G的每个M列，以标识Z中的子分辨率最大值。由Z和G的矢量相乘产生的M个乘积至少用于确定和存储在存储器中 一个或两个：（A）指示信号中存在或不存在窄带干扰的标志; 和（B）对窄带干扰的频率的估计。

公开(公告)号：US20110261863A1

公开(公告)日：2011-10-27

申请号：US12765097

申请日：2010-04-22

申请人： Gaurav Chandra ,  Moshe Malkin ,  Dariush Dabiri

发明人： Gaurav Chandra ,  Moshe Malkin ,  Dariush Dabiri

IPC分类号： H04B1/40

CPC分类号： H04B3/23 ,  H04L5/1461 ,  H04M9/082

摘要： Embodiments of a method and apparatus of reducing transmit signal components of a receive signal of a transceiver are disclosed. One method includes generating a transmit signal by passing a pre-driver transmit signal through a transmit driver. An echo cancellation signal is generated by passing the pre-driver transmit signal through an echo cancellation driver. A residual echo signal is generated by passing a pre-driver residual echo cancellation signal through a residual echo cancellation driver. The transceiver simultaneously transmits the transmit signal, and receiving the receive signal. At least a portion of an echo signal of the receive signal is canceled by summing the echo cancellation signal with the receive signal. At least another portion of the cancellation echo signal of the receive signal is canceled by summing the residual echo cancellation signal with the receive signal.

摘要翻译： 公开了一种降低收发器的接收信号的发射信号分量的方法和装置的实施例。 一种方法包括通过将预驱动器发送信号通过发送驱动器来产生发送信号。 通过将预驱动器发送信号通过回波消除驱动器来产生回波消除信号。 通过将预驱动器残留回声消除信号通过残余回声消除驱动器来产生残留回波信号。 收发器同时发送发送信号，并接收接收信号。 通过将回波消除信号与接收信号相加来消除接收信号的回波信号的至少一部分。 接收信号的消除回波信号的至少另一部分通过将残差回波消除信号与接收信号相加来消除。

公开(公告)号：US07634710B2

公开(公告)日：2009-12-15

申请号：US12217962

申请日：2008-07-10

申请人： Dariush Dabiri ,  Nitin Barot

发明人： Dariush Dabiri ,  Nitin Barot

IPC分类号： H03M13/00 ,  H03M13/03

CPC分类号： H03M13/1137 ,  H03M13/1111 ,  H03M13/114 ,  H03M13/616

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.

摘要翻译： 公开了用于解码信号的方法和装置的实施例。 该方法包括接收调制信号，产生表示信号的比特以及每个比特的相关可靠性。 该方法还包括使用第一分量代码来执行第一级解码比特，并且使用第二分量代码再次执行解码的第一阶段，以及使用第一分量代码执行第二阶段解码。 第一和第二阶段的解码用于产生比特流。 另一种方法包括接收调制信号，生成表示信号的位，以及每位的相关可靠性。 该方法还包括执行用于解码比特的N个级的第一级，第一级使用M个分量代码中的第一个，并且同时执行多个N个级的解码，多个N个级中的每一个使用不同的一个 的M组件代码。 使用多个N级解码来生成比特流。

公开(公告)号：US20080304576A1

公开(公告)日：2008-12-11

申请号：US12217962

申请日：2008-07-10

申请人： Dariush Dabiri ,  Nitin Barot

发明人： Dariush Dabiri ,  Nitin Barot

IPC分类号： H04B1/66

CPC分类号： H03M13/1137 ,  H03M13/1111 ,  H03M13/114 ,  H03M13/616

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.

摘要翻译： 公开了用于解码信号的方法和装置的实施例。 该方法包括接收调制信号，产生表示信号的比特以及每个比特的相关可靠性。 该方法还包括使用第一分量代码来执行第一级解码比特，并且使用第二分量代码再次执行解码的第一阶段，以及使用第一分量代码执行第二阶段解码。 第一和第二阶段的解码用于产生比特流。 另一种方法包括接收调制信号，生成表示信号的位，以及每位的相关可靠性。 该方法还包括执行用于解码比特的N个级的第一级，第一级使用M个分量代码中的第一个，并且同时执行多个N个级的解码，多个N个级中的每一个使用不同的一个 的M组件代码。 使用多个N级解码来生成比特流。

公开(公告)号：US07461328B2

公开(公告)日：2008-12-02

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 ,  H03M13/03

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.

摘要翻译： 公开了用于解码信号的方法和装置的实施例。 该方法包括接收调制信号，产生表示信号的比特以及每个比特的相关可靠性。 该方法还包括使用第一分量代码来执行第一级解码比特，并且使用第二分量代码再次执行解码的第一阶段，以及使用第一分量代码执行第二阶段解码。 第一和第二阶段的解码用于产生比特流。

公开(公告)号：US6167098A

公开(公告)日：2000-12-26

申请号：US8109

申请日：1998-01-16

申请人： Christopher Keate ,  Ravi Bhaskaran ,  Dariush Dabiri

发明人： Christopher Keate ,  Ravi Bhaskaran ,  Dariush Dabiri

IPC分类号： H04B1/12 ,  H04L25/08 ,  H04L25/06

CPC分类号： H04B1/123

摘要： Digital interference rejection of a signal is accomplished by first converting the signal to digital. Then a second signal is generated and mixed with the first signal. This combined signal is then filtered. The signal can then be scaled as needed, resulting in a finely tuned, interference free signal.

公开(公告)号：US5996112A

公开(公告)日：1999-11-30

申请号：US785391

申请日：1997-01-21

申请人： Dariush Dabiri ,  Daniel A. Luthi ,  Advait M. Mogre

发明人： Dariush Dabiri ,  Daniel A. Luthi ,  Advait M. Mogre

IPC分类号： G06F11/10 ,  H03D1/00

CPC分类号： H03M13/4169 ,  H03M13/4192 ,  H04L1/0052 ,  H04L1/0054

摘要： This invention concerns a novel Viterbi decoding apparatus and method in which a survivor path unit (SPU) implements the traceback method with a RAM which stores path information in a manner which allows fast read access without requiring physical partitioning of the RAM. This results in an implementation that requires less chip area than conventional solutions.

摘要翻译： 本发明涉及一种新颖的维特比解码装置和方法，其中幸存路径单元（SPU）利用RAM来实现回溯方法，该RAM以允许快速读取访问的方式存储路径信息，而不需要RAM的物理划分。 这导致了与常规解决方案相比需要更少芯片面积的实现。

公开(公告)号：US5815515A

公开(公告)日：1998-09-29

申请号：US822412

申请日：1997-03-21

申请人： Dariush Dabiri

发明人： Dariush Dabiri

IPC分类号： H03M13/41 ,  H03M13/12

CPC分类号： H03M13/4107

摘要： This invention concerns a novel Viterbi decoding apparatus and method in which a novel survivor weight unit (SWU) implements a normalized survivor weight calculation method with permutations. This method permutes a vector of survivor weights in a manner which permits calculation of weights by specialized dual add-compare-select units. The specialization of the butterfly computation unit allows for a reduction of storage and computation requirements.

摘要翻译： 本发明涉及一种新颖的维特比解码装置和方法，其中新的幸存者权重单元（SWU）实现具有排列的归一化幸存者权重计算方法。 该方法以允许通过专门的双加法比较选择单元计算权重的方式来排列幸存者权重向量。 蝴蝶计算单元的专业化可以减少存储和计算需求。