公开(公告)号：US08345930B2

公开(公告)日：2013-01-01

申请号：US12758208

申请日：2010-04-12

申请人： Amir Tamrakar ,  Harpreet Singh Sawhney ,  Qian Yu ,  Ajay Divakaran

发明人： Amir Tamrakar ,  Harpreet Singh Sawhney ,  Qian Yu ,  Ajay Divakaran

IPC分类号： G06K9/00

CPC分类号： G06T7/0002 ,  G06T7/44 ,  G06T7/593 ,  G06T7/62 ,  G06T7/77 ,  G06T2207/20016 ,  G06T2207/30128

摘要： A computer-implemented method for estimating a volume of at least one food item on a food plate is disclosed. A first and second plurality of images are received from different positions above a food plate, wherein angular spacing between the positions of the first plurality of images is greater than angular spacing between the positions of the second plurality of images. A first set of poses of each of the first plurality of images is estimated. A second set of poses of each of the second plurality of images is estimated based on at least the first set of poses. A pair of images taken from each of the first and second plurality of images is rectified based on at least the first and second set of poses. A 3D point cloud is reconstructed based on at least the rectified pair of images. At least one surface of the at least one food item above the food plate is estimated based on at least the reconstructed 3D point cloud. The volume of the at least one food item is estimated based on the at least one surface.

摘要翻译： 公开了一种用于估计食品板上的至少一种食品的体积的计算机实现的方法。 从食品牌上方的不同位置接收第一和第二多个图像，其中第一多个图像的位置之间的角度间隔大于第二多个图像的位置之间的角度间隔。 估计第一多个图像中的每一个的第一组姿势。 基于至少第一组姿势来估计第二组多个图像中的每一个的第二组姿势。 从第一和第二多个图像中的每一个拍摄的一对图像至少基于第一和第二组姿势进行整改。 至少基于整流图像对来重构3D点云。 基于至少重构的3D点云来估计食物板上方的至少一个食物的至少一个表面。 基于至少一个表面来估计至少一个食物的体积。

公开(公告)号：US20120106600A1

公开(公告)日：2012-05-03

申请号：US12939067

申请日：2010-11-03

申请人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

发明人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

IPC分类号： H04B1/38 ,  H04L25/03 ,  H03F1/26

CPC分类号： H03F1/3241 ,  H03F3/19 ,  H03F2201/3224 ,  H04B2001/0425

摘要： RF predistortion apparatus for making linear the output signal of non-linear components such as RF power amplifiers. The apparatus comprises an RF input line for carrying an RF signal connected to an envelop detector for finding the envelop of the RF signal, a power detector for finding the power of the RF signal and a quadrature modulator. The apparatus also comprises a coefficient vector input line for carrying an input signal that carries one or more coefficients to a digitally controlled analog subsystem (DCAS). The DCAS having circuitry for processing both the output of the envelop detector and the output of the power detector by selecting one or more coefficients from the coefficient vector input line for generating a weighted summation of the power of the RF signal and a weighted summation of the envelop voltage of the RF signal that are output to the quadrature modulator. The quadrature modulator has circuitry for mixing the RF input signal with the output of the DCAS to generate a signal for predistorting the RF input signal feeding the power amplifier.

摘要翻译： 射频预失真装置，用于对诸如RF功率放大器之类的非线性分量的输出信号进行线性化。 该装置包括用于承载连接到包络检测器的RF信号用于找到RF信号的包络的RF输入线，用于找到RF信号的功率的功率检测器和正交调制器。 该装置还包括一个用于承载一个或多个系数到数字控制的模拟子系统（DCAS）的输入信号的系数向量输入线。 DCAS具有用于通过从系数向量输入线中选择一个或多个系数来处理包络检测器的输出和功率检测器的输出的电路，用于产生RF信号的功率的加权求和和 输出到正交调制器的RF信号的包络电压。 正交调制器具有用于将RF输入信号与DCAS的输出混合以产生用于预失真馈送功率放大器的RF输入信号的信号的电路。

公开(公告)号：US20100142633A1

公开(公告)日：2010-06-10

申请号：US12514515

申请日：2007-06-23

申请人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

发明人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

IPC分类号： H04L27/28

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639

摘要： A transmission method in a multiple-input multiple-output (MIMO) communication system, a transmitter in a MIMO communication system and a MIMO communication system are provided. The method comprises the steps of: receiving feedback data representing channel state information from respective receivers of the MIMO communication system; grouping the receivers into one or more groups based on the received feedback data; obtaining a precoding matrix for each group of receivers based on the received feedback data such that precoding vectors or sub-matrices in the precoding matrix associated with respective receivers of said each group of receivers are orthogonal to each other; and applying the precoding matrix to input signals for transmission to said each group of receivers.

摘要翻译： 提供了多输入多输出（MIMO）通信系统中的传输方法，MIMO通信系统中的发射机和MIMO通信系统。 该方法包括以下步骤：从MIMO通信系统的各接收机接收表示信道状态信息的反馈数据; 基于接收到的反馈数据将接收机分组成一个或多个组; 基于所接收的反馈数据获得每组接收机的预编码矩阵，使得与所述每组接收机的各接收机相关联的预编码矩阵中的预编码向量或子矩阵彼此正交; 以及将预编码矩阵应用于输入信号以传输到所述每组接收机。

公开(公告)号：US07266145B2

公开(公告)日：2007-09-04

申请号：US10321876

申请日：2002-12-17

申请人： Venugopal Balasubramonian ,  Jishnu Bhattacharjee ,  Edem Ibragimov ,  Debanjan Mukherjee ,  Abhijit Phanse ,  Abhijit G. Shanbhag ,  Qian Yu

发明人： Venugopal Balasubramonian ,  Jishnu Bhattacharjee ,  Edem Ibragimov ,  Debanjan Mukherjee ,  Abhijit Phanse ,  Abhijit G. Shanbhag ,  Qian Yu

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L25/03057 ,  H03H21/0012 ,  H03H2021/0096 ,  H04L7/0029 ,  H04L7/0062 ,  H04L7/0079 ,  H04L2025/0349 ,  H04L2025/03611

摘要： An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, thereby producing more adaptive filter tap coefficient signals for significantly improved and robust signal equalization.

摘要翻译： 一种具有前馈滤波器的自适应信号均衡器，其中反馈误差信号和相应的输入数据信号在时间上使用信号插值动态对准，此外，控制前驱/后沿滤波器抽头配置，由此产生更多的自适应滤波器抽头系数信号， 显着改善和鲁棒的信号均衡。

公开(公告)号：US07120193B2

公开(公告)日：2006-10-10

申请号：US11070485

申请日：2005-03-02

申请人： Edem Ibragimov ,  Qian Yu ,  Prashant Choudhary

发明人： Edem Ibragimov ,  Qian Yu ,  Prashant Choudhary

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L25/03057 ,  H03H21/0012 ,  H03H2021/0096 ,  H04L25/03063 ,  H04L25/0307 ,  H04L2025/0349 ,  H04L2025/03509 ,  H04L2025/03611

摘要： A decision feedback equalizer with dynamic feedback control for use in an adaptive signal equalizer. Timing within the decision feedback loop is dynamically controlled to optimize recovery of the data signal by the output signal slicer.

摘要翻译： 具有用于自适应信号均衡器的动态反馈控制的判决反馈均衡器。 动态控制决策反馈环路内的定时，以优化输出信号限幅器对数据信号的恢复。

公开(公告)号：US08737509B2

公开(公告)日：2014-05-27

申请号：US13141743

申请日：2010-01-06

申请人： Qian Yu ,  Lei Huang ,  Masayuki Hoshino ,  Daichi Imamura

发明人： Qian Yu ,  Lei Huang ,  Masayuki Hoshino ,  Daichi Imamura

IPC分类号： H04L1/02

CPC分类号： H04B7/0456 ,  H04B7/002 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0691 ,  H04B7/10 ,  H04L25/0224 ,  H04L25/0248 ,  H04L25/03898 ,  H04L25/03961 ,  H04L2025/03808

摘要： In a MIMO system using a cross-polarized antenna structure, even if no ideal XPD can be obtained, the interference between different polarized waves can be reduced to allow an effective precoding to be executed. When a MIMO communication is performed between a transmitter (250) and a receiver (260) each using a cross-polarized antenna structure, a channel estimating and precoding selection section (214) of the receiver (260) performs a channel estimation of MIMO channels from the transmitter to the receiver, decides a precoding matrix (P) of a projection matrix for mutually orthogonalizing or substantially orthogonalizing the channel response matrixes for respective different polarized waves, and feeds the determined precoding matrix (P) back to the transmitter (250). In the transmitter (250), a precoding processing section (208) applies the precoding matrix (P) to the spatial stream corresponding to one of the polarized waves to perform a precoding, thereby allowing the transmitter (250) to transmit the polarized waves with the orthogonality therebetween maintained.

摘要翻译： 在使用交叉极化天线结构的MIMO系统中，即使不能获得理想的XPD，也可以减小不同极化波之间的干扰，从而实现有效的预编码。 当在每个使用交叉极化天线结构的发射机（250）和接收机（260）之间执行MIMO通信时，接收机（260）的信道估计和预编码选择部分（214）执行MIMO信道的信道估计 从发射机到接收机，决定用于相互正交化或基本正交化各个不同极化波的信道响应矩阵的投影矩阵的预编码矩阵（P），并将所确定的预编码矩阵（P）馈送给发射机（250） 。 在发射机（250）中，预编码处理部（208）将预编码矩阵（P）应用于与一个偏振波相对应的空间流，以执行预编码，从而允许发射机（250）发射偏振波 保持其间的正交性。

公开(公告)号：US08532592B1

公开(公告)日：2013-09-10

申请号：US13407511

申请日：2012-02-28

申请人： Qian Yu ,  Abhijit G. Shanbhag ,  Yan Wang

发明人： Qian Yu ,  Abhijit G. Shanbhag ,  Yan Wang

IPC分类号： H04B1/04

CPC分类号： H03F1/3241 ,  H03F1/3247 ,  H04B17/13

摘要： A mixed-signal adaptive integrated circuit may comprise a primary function circuit, a digitally controlled analog sub-system cooperatively connected with the primary function circuit, and an on-chip signal analyzer. The on-chip signal analyzer may be arranged to analyze RF signals. The signal analyzer may comprise at least one multiplexor for selecting selected RF signals for comparison and analysis, and may comprise a digital signal processor (DSP) for analyzing the selected RF signals and adjusting at least one operational parameter of the digitally controlled analog sub-system responsive to the analysis.

摘要翻译： 混合信号自适应集成电路可以包括与主要功能电路协作连接的主要功能电路，数字控制的模拟子系统和片上信号分析器。 片上信号分析器可以被布置成分析RF信号。 信号分析器可以包括用于选择用于比较和分析的所选RF信号的至少一个多路复用器，并且可以包括用于分析所选择的RF信号并调整数字控制的模拟子系统的至少一个操作参数的数字信号处理器（DSP） 响应分析。

公开(公告)号：US08464120B2

公开(公告)日：2013-06-11

申请号：US12445275

申请日：2006-10-10

申请人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

发明人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

IPC分类号： G06F11/00

CPC分类号： H04B7/068 ,  H03M13/114 ,  H03M13/116 ,  H03M13/118 ,  H03M13/356 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/007 ,  H04L1/0625

摘要： A method for data transmission in a multiple input multiple output (MIMO) system, the method including, receiving multiple input data streams; performing low density parity check (LDPC) encoding of the input data streams utilizing a parity check matrix, the parity check matrix including a plurality of sub-parity check matrices for encoding respective ones of the input data streams; and performing space time encoding for transmitting the LDPC encoded input data streams over a plurality of antennas.

摘要翻译： 一种用于多输入多输出（MIMO）系统中数据传输的方法，所述方法包括：接收多个输入数据流; 使用奇偶校验矩阵对输入数据流进行低密度奇偶校验（LDPC）编码，所述奇偶校验矩阵包括用于编码各个输入数据流的多个子奇偶校验矩阵; 以及执行空间时间编码以在多个天线上发送LDPC编码的输入数据流。

公开(公告)号：US08340006B2

公开(公告)日：2012-12-25

申请号：US12296856

申请日：2006-04-12

申请人： Qian Yu ,  Hiramatsu Katsuhiko ,  Ping Luo

发明人： Qian Yu ,  Hiramatsu Katsuhiko ,  Ping Luo

IPC分类号： H04B7/00

CPC分类号： H04L1/0637 ,  H04B7/0669 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/007

摘要： A method and system for transmitting data in a wireless communications system using multiple transmit antennas. The method comprises the steps of receiving a plurality of data sequences, each assigned with a priority level; encoding each of said plurality of data sequences in accordance with the assigned priority level to form a plurality of coded data sequences, the coded data sequences comprising systematic data and parity data; interleaving said plurality of coded data sequences to form a plurality of interleaved data sequences; multiplexing said plurality of interleaved data sequences to form a plurality of multiplexed data sequences; and mapping said plurality of multiplexed data sequences to form a plurality of mapped data sequences for subsequent transmission of said mapped data sequences from said multiple transmit antennas.

摘要翻译： 一种用于在使用多个发射天线的无线通信系统中发送数据的方法和系统。 该方法包括以下步骤：接收分配有优先级的多个数据序列; 根据所分配的优先级编码所述多个数据序列中的每一个以形成多个编码数据序列，所述编码数据序列包括系统数据和奇偶校验数据; 交织所述多个编码数据序列以形成多个交错数据序列; 多路复用所述多个交错数据序列以形成多个复用数据序列; 以及映射所述多个多路复用数据序列以形成多个映射数据序列，用于随后从所述多个发射天线发送所述映射的数据序列。

公开(公告)号：US08225168B2

公开(公告)日：2012-07-17

申请号：US12445277

申请日：2007-10-01

申请人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

发明人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

IPC分类号： H03M13/00 ,  H03M13/03 ,  G06F11/00 ,  H04L5/12 ,  H04L27/06 ,  H04B17/00

CPC分类号： H04B7/068 ,  H03M13/114 ,  H03M13/116 ,  H03M13/118 ,  H03M13/356 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/007 ,  H04L1/0625

摘要： A method for data transmission in a multiple input multiple output (MIMO) system. The method for data transmission includes receiving multiple input data streams and performing low density parity check (LDPC) encoding of the input data streams utilizing a parity check matrix. The parity check matrix comprises a plurality of sub-parity check matrices for encoding respective associated ones of the input data streams and performing space time encoding for transmitting the LDPC encoded input data streams over a plurality of antennas. The performing of the LDPC encoding of the input data streams includes generating one or more connection matrices, each connection matrix for injecting information of one of the input data streams into the encoding of another one of the input data streams. Each connection matrix is a zero matrix if a lowest parity check protection level based on the sub-parity check matrix for the one of the input data streams is equal to or lower than an assigned parity check protection level for the one input data stream, and a non zero matrix otherwise.

摘要翻译： 一种用于多输入多输出（MIMO）系统中数据传输的方法。 用于数据传输的方法包括利用奇偶校验矩阵来接收多个输入数据流并执行输入数据流的低密度奇偶校验（LDPC）编码。 奇偶校验矩阵包括多个子奇偶校验矩阵，用于对各个相关的输入数据流进行编码，并执行空间时间编码，以在多个天线上发送LDPC编码的输入数据流。 执行输入数据流的LDPC编码包括生成一个或多个连接矩阵，每个连接矩阵用于将输入数据流中的一个的信息注入到另一个输入数据流的编码中。 如果基于用于输入数据流之一的子奇偶校验矩阵的最低奇偶校验保护级别等于或低于所述一个输入数据流的分配的奇偶校验保护级别，则每个连接矩阵是零矩阵，以及 否则为非零矩阵。