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1. 发明授权

US08553814B2 Rapid sampling phase recovery 有权
标题翻译：快速采样相恢复
公开(公告)号：US08553814B2
公开(公告)日：2013-10-08
申请号：US12533568
申请日：2009-07-31
申请人： Albert Molina , Oisin Ó Cuanacháin , Ramon Sanchez
发明人： Albert Molina , Oisin Ó Cuanacháin , Ramon Sanchez
IPC分类号： H04L27/06
CPC分类号： H04L7/10 , H03L7/0807 , H03L7/093 , H03L7/1075 , H04L7/0331 , H04L7/048
摘要： In a communication receiver, timing recovery circuitry includes a loop filter associated with a timing recovery loop of a first communication device. The first communication device is in communication with a second communication device prior to a temporary power down/power up sequence in the first communication device. The loop filter is configured to: (i) temporarily disable at least a portion of the timing recovery loop after the temporary power down/power up sequence in the first communication device; and (ii) initiate a progression through a set of potential sampling phases to determine a given sampling phase at which the first communication device can recommence communication with the second communication device.
摘要翻译：在通信接收机中，定时恢复电路包括与第一通信设备的定时恢复环路相关联的环路滤波器。第一通信设备在第一通信设备中的临时断电/上电序列之前与第二通信设备通信。环路滤波器被配置为：（i）在第一通信设备中的临时断电/上电序列之后临时禁用定时恢复环路的至少一部分; 以及（ii）通过一组潜在的采样阶段启动进展，以确定第一通信设备可以重新开始与第二通信设备的通信的给定采样阶段。

2. 发明授权

US08015226B2 Methods and apparatus for performing reduced complexity discrete fourier transforms using interpolation 有权
标题翻译：使用插值执行复杂度降低的离散傅里叶变换的方法和装置
公开(公告)号：US08015226B2
公开(公告)日：2011-09-06
申请号：US11859437
申请日：2007-09-21
申请人： Kameran Azadet , Samer Hijazi , Sunitha Kopparthi , Albert Molina , Ramon Sanchez
发明人： Kameran Azadet , Samer Hijazi , Sunitha Kopparthi , Albert Molina , Ramon Sanchez
IPC分类号： G06F17/14
CPC分类号： G06F17/141
摘要： Methods and apparatus are provided for performing reduced complexity discrete Fourier transforms using interpolation An input sequence of length N is transformed by extending the input sequence to an extended input sequence of length M, where M is greater than N (a power of two greater than N); performing a discrete Fourier Transform (DFT), such as a power-of-two DFT, on the extended input sequence to obtain an interpolated sequence; and applying a conversion matrix to the interpolated sequence to obtain a DFT output for the input sequence of length N. The input sequence of length N can be extended to an extended input sequence of length M, for example, by employing a zero padding technique, a cyclic extension technique, a windowing of a cyclic extended sequence technique or a resampling-based interpolation technique to extend the input sequence. The conversion matrix is substantially a sparse matrix.
摘要翻译：提供的方法和装置用于使用插值来执行降低复杂度的离散付里叶变换通过将输入序列扩展为长度为M的扩展输入序列来变换长度为N的输入序列，其中M大于N（2的幂大于N ）; 在扩展输入序列上执行离散傅立叶变换（DFT），例如二次幂DFT，以获得内插序列; 以及将转换矩阵应用到内插序列以获得长度为N的输入序列的DFT输出。例如，通过采用零填充技术，长度N的输入序列可以扩展到长度为M的扩展输入序列，循环扩展技术，循环扩展序列技术的开窗或基于重新采样的插值技术来扩展输入序列。转换矩阵基本上是稀疏矩阵。

3. 发明申请

US20110026650A1 Rapid Sampling Phase Recovery 有权
标题翻译：快速采样相恢复
公开(公告)号：US20110026650A1
公开(公告)日：2011-02-03
申请号：US12533568
申请日：2009-07-31
申请人： Albert Molina , Oisin Ó Cuanacháin , Ramon Sanchez
发明人： Albert Molina , Oisin Ó Cuanacháin , Ramon Sanchez
IPC分类号： H04L7/00 , H04L27/06
CPC分类号： H04L7/10 , H03L7/0807 , H03L7/093 , H03L7/1075 , H04L7/0331 , H04L7/048
摘要： In a communication receiver, timing recovery circuitry includes a loop filter associated with a timing recovery loop of a first communication device. The first communication device is in communication with a second communication device prior to a temporary power down/power up sequence in the first communication device. The loop filter is configured to: (i) temporarily disable at least a portion of the timing recovery loop after the temporary power down/power up sequence in the first communication device; and (ii) initiate a progression through a set of potential sampling phases to determine a given sampling phase at which the first communication device can recommence communication with the second communication device.
摘要翻译：在通信接收机中，定时恢复电路包括与第一通信设备的定时恢复环路相关联的环路滤波器。第一通信设备在第一通信设备中的临时断电/上电序列之前与第二通信设备通信。环路滤波器被配置为：（i）在第一通信设备中的临时断电/上电序列之后临时禁用定时恢复环路的至少一部分; 以及（ii）通过一组潜在的采样阶段启动进展，以确定第一通信设备可以重新开始与第二通信设备的通信的给定采样阶段。

4. 发明申请

US20100304687A1 METHODS AND APPARATUS FOR SIMULTANEOUS ESTIMATION OF FREQUENCY OFFSET AND CHANNEL RESPONSE FOR MU-MIMO OFDMA 有权
标题翻译：用于MU-MIMO OFDMA的频率偏移和频道响应的同时估计的方法和装置
公开(公告)号：US20100304687A1
公开(公告)日：2010-12-02
申请号：US12474344
申请日：2009-05-29
申请人： Kameran Azadet , Samer Hijazi , Albert Molina , Ramon Sanchez
发明人： Kameran Azadet , Samer Hijazi , Albert Molina , Ramon Sanchez
IPC分类号： H04B17/00
CPC分类号： H04L27/2657 , H04L25/0202 , H04L27/2675 , H04L27/2695
摘要： Methods and apparatus are provided for simultaneous estimation of frequency offset and channel response for a communication system, such as a MU-MIMO communication system. An iterative method is provided for estimating frequency offset and channel response for a plurality of frequency resources. The channel response is estimated for a set of users sharing a given one of the frequency resources. In addition, the frequency offset is estimated for the users in the set, wherein the channel response and frequency offset of users not in the set are maintained at their latest updated values. Initially, the channel response of a user can be an ideal channel response and the frequency offset can be approximately zero.
摘要翻译：提供了用于同时估计诸如MU-MIMO通信系统的通信系统的频率偏移和信道响应的方法和装置。提供了一种用于估计多个频率资源的频率偏移和信道响应的迭代方法。对于共享给定的一个频率资源的一组用户估计信道响应。此外，针对集合中的用户估计频率偏移，其中不在集合中的用户的信道响应和频率偏移保持在其最新的更新值。最初，用户的信道响应可以是理想的信道响应，并且频率偏移可以近似为零。

5. 发明授权

US07020068B2 Echo and crosstalk cancellation 失效
标题翻译：回声和串扰消除
公开(公告)号：US07020068B2
公开(公告)日：2006-03-28
申请号：US09843909
申请日：2001-04-30
申请人： Philip Curran , Albert Molina , Brian Murray , Carl Murray
发明人： Philip Curran , Albert Molina , Brian Murray , Carl Murray
IPC分类号： H04B7/015
CPC分类号： H04B3/23
摘要： A cancellation system comprises a channel circuit (11) for each noise source, such as echo in a particular cable pair. There are only eighty taps per channel, in two blocks (n_echo_a, f_echo_a). Each block is preceded by a variable delay line comprising blocks of registers cascaded so that a delay value of 0 to 40 clock cycles can be chosen. The delay value is determined by determining an optimum position for each tap block. This is achieved by determining a maximum coefficient sum for a number of windows. Taps from other channels are used during training, so that there is a total of 160 taps for each channel during training to enable the optimum positions to be determined.
摘要翻译：消除系统包括用于每个噪声源的信道电路（11），例如特定电缆对中的回波。每个通道只有八十个水龙头，两个块（n_echo_a，f_echo_a）。每个块前面都有一个可变延迟线，它包括级联的寄存器块，从而可以选择0到40个时钟周期的延迟值。通过确定每个抽头块的最佳位置来确定延迟值。这是通过确定多个窗口的最大系数和来实现的。在训练期间使用来自其他通道的抽头，因此训练期间每个通道共有160个抽头，以确定最佳位置。

6. 发明申请

US20140108477A1 VECTOR PROCESSOR HAVING INSTRUCTION SET WITH VECTOR CONVOLUTION FUNCTION FOR FIR FILTERING 有权
标题翻译：矢量处理器具有用于FIR滤波的矢量转换功能的指令
公开(公告)号：US20140108477A1
公开(公告)日：2014-04-17
申请号：US13701376
申请日：2012-10-26
申请人： Kameran Azadet , Meng-Lin Yu , Joseph H. Othmer , Joseph Williams , Albert Molina
发明人： Kameran Azadet , Meng-Lin Yu , Joseph H. Othmer , Joseph Williams , Albert Molina
IPC分类号： G06F5/01
CPC分类号： G06F9/3001 , G06F5/01 , G06F9/30036 , G06F17/15 , H03F1/0288 , H03F1/3241 , H03F1/3258 , H03F3/189 , H03F3/24 , H03F2200/336 , H03F2201/3209 , H03F2201/3212 , H03F2201/3224 , H03F2201/3233 , H03H17/06 , H03M3/30 , H04B1/0003 , H04B1/0475 , H04B1/62 , H04B2001/0408 , H04L1/0054 , H04L25/02 , H04L25/03 , H04L25/03178 , H04L25/03216 , H04L25/4917 , H04L27/2334
摘要： A vector processor is provided having an instruction set with a vector convolution function. The disclosed vector processor performs a convolution function between an input signal and a filter impulse response by obtaining a vector comprised of at least N1+N2-1 input samples; obtaining N2 time shifted versions of the vector (including a zero shifted version), wherein each time shifted version comprises Ni samples; and performing a weighted sum of the time shifted versions of the vector by a vector of Ni coefficients; and producing an output vector comprising one output value for each of the weighted sums. The vector processor performs the method, for example, in response to one or more vector convolution software instructions having a vector input. The vector can comprise a plurality of real or complex input samples and the filter impulse response can be expressed using a plurality of coefficients that are real or complex.
摘要翻译：提供了具有具有向量卷积函数的指令集的向量处理器。所公开的向量处理器通过获得包括至少N1 + N2-1个输入样本的向量来执行输入信号和滤波器脉冲响应之间的卷积函数; 获得矢量的N2时移版本（包括零位版本），其中每个时移版本包括Ni样本; 以及通过Ni系数的向量来执行向量的时移版本的加权和; 以及产生包括每个加权和的一个输出值的输出向量。矢量处理器例如响应于具有矢量输入的一个或多个向量卷积软件指令来执行该方法。矢量可以包括多个实数或复数输入样本，并且可以使用实数或复数的多个系数来表示滤波器脉冲响应。

7. 发明授权

US08595604B2 Methods and apparatus for search sphere linear block decoding 有权
标题翻译：搜索球线性块解码的方法和装置
公开(公告)号：US08595604B2
公开(公告)日：2013-11-26
申请号：US13247439
申请日：2011-09-28
申请人： Samer Hijazi , Carl Murray , Joseph H. Othmer , Albert Molina , Kameran Azadet
发明人： Samer Hijazi , Carl Murray , Joseph H. Othmer , Albert Molina , Kameran Azadet
IPC分类号： H03M13/00
CPC分类号： H03M13/451 , H03M13/13 , H03M13/6502
摘要： A search sphere-based linear block decoder is provided. A received vector, v, is decoded by computing a syndrome vector, S, corresponding to the received vector, v; (S=vH); obtaining a set of all possible error vectors, e, corresponding to the computed syndrome vector, S, wherein the set of all possible error vectors, e, is obtained from a pre-computed error table and has a specified maximum number of bit errors; calculating a set of all possible received vectors, x, based on the received vector, v, and the set of all possible error vectors, e; determining a k-bit code-vector x that is closest to the received vector, v; and determining an n-bit data-vector, d, associated with the k-bit code-vector x. The pre-computed error table can be generated by multiplying all possible error vectors by a Syndrome Matrix, to obtain all possible syndrome vectors associated with all possible error vectors.
摘要翻译：提供基于搜索范围的线性块解码器。通过计算对应于接收向量v的校正子向量S来解码接收向量v，（S = vH）; 获得对应于所计算的校正子向量S的所有可能的误差向量集合，其中所有可能的误差向量集合e从预先计算的误差表获得并且具有指定的最大数量的比特错误; 基于所接收的向量v和所有可能的误差向量的集合e来计算所有可能的接收向量x的集合; 确定最接近接收矢量的k位码矢量，v; 以及确定与所述k位码矢量x相关联的n位数据矢量d。可以通过将所有可能的误差向量乘以综合征矩阵来产生预计算误差表，以获得与所有可能的误差向量相关联的所有可能的校正子向量。

8. 发明授权

US08515376B2 Receiver and method for estimating a plurality of estimated transfer functions corresponding to wireless channels in a multiple-input system 有权
标题翻译：用于估计与多输入系统中的无线信道相对应的多个估计传递函数的接收器和方法
公开(公告)号：US08515376B2
公开(公告)日：2013-08-20
申请号：US13617229
申请日：2012-09-14
申请人： Kameran Azadet , Samer Hijazi , Sunitha Kopparthi , Albert Molina , Ramon Sanchez
发明人： Kameran Azadet , Samer Hijazi , Sunitha Kopparthi , Albert Molina , Ramon Sanchez
IPC分类号： H04B1/06
CPC分类号： H04L25/0202 , H04L1/0631 , H04L1/20 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/021 , H04L25/022 , H04L25/023 , H04L25/025
摘要： In one embodiment, a receiver is provided for use in a multiple-input system that includes a receiving antenna receiving a time-domain signal corresponding to a plurality of signals transmitted from a plurality of transmitting antennas. The receiver includes: (a) a transform unit adapted to transform the time-domain signal into a frequency-domain signal; (b) a channel estimation unit adapted to estimate, based on the frequency-domain signal and a frequency-domain pilot signal, a combined transfer function corresponding to a plurality of transfer functions of respective channels between the plurality of transmitting antennas and the receiving antenna; and (c) a channel separation unit including a plurality of frequency-domain convolution units that separate the combined transfer function into a plurality of estimated channel transfer functions.
摘要翻译：在一个实施例中，提供接收机用于多输入系统，该多输入系统包括接收天线，其接收与从多个发射天线发射的多个信号相对应的时域信号。接收机包括：（a）适于将时域信号变换为频域信号的变换单元; （b）信道估计单元，适于基于频域信号和频域导频信号估计与多个发射天线和接收天线之间的各个信道的多个传递函数相对应的组合传递函数 ; 以及（c）信道分离单元，其包括将所述组合传递函数分离成多个估计信道传递函数的多个频域卷积单元。

9. 发明申请

US20060219853A1 Adjustable article hanging assembly 审中-公开
标题翻译：可调式悬挂装置
公开(公告)号：US20060219853A1
公开(公告)日：2006-10-05
申请号：US11099025
申请日：2005-04-05
申请人： Albert Molina , Piergiorgio Ciriaci
发明人： Albert Molina , Piergiorgio Ciriaci
IPC分类号： A47K1/00
CPC分类号： A47G7/044 , A47K2201/00
摘要： An adjustable hanging assembly for suspending an article from a surface is provided which includes an elongated strap member, a buckle coupled to a first part of the elongated member and capable of locking a second part of the elongated member such that a portion of the elongated member defines a substantially closed shape adapted to hold the article. The shape and size of the closed shape is adjustable by changing the location the buckle locks the second part of the elongated member. The hanging assembly also includes a mounting bracket coupled to the buckle or the elongated member and includes a mounting member adapted to be attached to the surface. One embodiment includes a ratchet buckle with a pawl that interacts with a plurality of notches on the elongated member to adjust and lock the elongated member as the second part of the elongated member passes through the buckle.
摘要翻译：提供了一种用于从表面悬挂物品的可调式悬挂组件，其包括细长带状构件，联接到细长构件的第一部分并能够锁定细长构件的第二部分的带扣，使得细长构件的一部分限定适于保持物品的基本上封闭的形状。通过改变带扣锁定细长构件的第二部分的位置来调节封闭形状的形状和尺寸。悬挂组件还包括联接到带扣或细长构件的安装支架，并且包括适于附接到表面的安装构件。一个实施例包括具有棘爪的棘轮带扣，其与细长构件上的多个凹口相互作用，以在细长构件的第二部分穿过带扣时调节和锁定细长构件。

10. 发明授权

US09942078B2 Methods and apparatus for simultaneous estimation of frequency offset and channel response for MU-MIMO OFDMA 有权
公开(公告)号：US09942078B2
公开(公告)日：2018-04-10
申请号：US12474344
申请日：2009-05-29
申请人： Kameran Azadet , Samer Hijazi , Albert Molina , Ramon Sanchez
发明人： Kameran Azadet , Samer Hijazi , Albert Molina , Ramon Sanchez
IPC分类号： H04L27/26 , H04L25/02
CPC分类号： H04L27/2657 , H04L25/0202 , H04L27/2675 , H04L27/2695
摘要： Methods and apparatus are provided for simultaneous estimation of frequency offset and channel response for a communication system, such as a MU-MIMO communication system. An iterative method is provided for estimating frequency offset and channel response for a plurality of frequency resources. The channel response is estimated for a set of users sharing a given one of the frequency resources. In addition, the frequency offset is estimated for the users in the set, wherein the channel response and frequency offset of users not in the set are maintained at their latest updated values. Initially, the channel response of a user can be an ideal channel response and the frequency offset can be approximately zero.

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