公开(公告)号：US08711958B2

公开(公告)日：2014-04-29

申请号：US13598161

申请日：2012-08-29

申请人： Rabih Chrabieh ,  Yang Liu

发明人： Rabih Chrabieh ,  Yang Liu

IPC分类号： H04L5/12

CPC分类号： H04L25/067 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0631 ,  H04L25/03891 ,  H04L2025/03426

摘要： The disclosure relates to a method for decoding a received signal in a MIMO communication system and in at least one layer, each layer carrying at least one data symbol belonging to a signal constellation. The method includes, for one of the at least one layer, a maximum likelihood detection step. This step includes: selecting one candidate value for the data symbol of the layer, and determining the Euclidian distance between the received signal Y and the data signal transmitted using said candidate value multiplied by said channel matrix H, weighted by the inverse of a noise covariance matrix C such as ∥Y−ΣiHixi∥C−12, expressed as: Σi≠n∥Hi∥C−12|xi|2−2(HiHC−1Y−0.5Σj≠i,nHiHC−1Hjxj)x*i+∥Hn∥C−12|xn|2−2(HnHC−1Y−Σj≠nHnHC−1Hjxj)x*n=Σi≠nαiR(xi)2−2βiRxi+αnR(xn)2−2βnRxn+Σi≠nαiI(ℑxi)2−2βiIℑxi+αnI(ℑxn)2−2βnIℑxn. The terms depending on αk are computed by adding to each of them a predetermined constant depending on the size of the constellation of the layer k, called a constellation dependent constant.

摘要翻译： 本公开涉及一种用于对MIMO通信系统中的接收信号进行解码的方法，并且在至少一个层中，每层承载属于信号星座的至少一个数据符号。 对于所述至少一个层中的一个，所述方法包括最大似然检测步骤。 该步骤包括：为层的数据符号选择一个候选值，并且确定接收信号Y与使用所述候选值发送的数据信号之间的欧几里德距离乘以所述信道矩阵H，由噪声协方差 矩阵C，例如∥Y-＆Sgr;iHixi‖C-12，表示为：＆Sgr; i≠n∥Hi| C-12 | xi | 2-2（HiHC-1Y-0.5＆Sgr; j≠i，nHiHC-1Hjxj ）x * i +∥Hn| C-12 | xn | 2-2（HnHC-1Y-＆Sgr; j≠nHnHC-1Hjxj）x * n =＆Sgr; i≠nαiR（xi）2-2＆bgr; iRxi +αnR（xn ）2-2＆bgr; nRxn +＆Sgr; i≠nαiI（ℑxi）2-2＆bgr; iIxixi +αnI（ℑxn）2-2＆bgr;nIℑxn。 通过根据αk的星座的大小将它们分配给预定的常数来计算取决于αk的项，称为星座依赖常数。

公开(公告)号：US08699598B2

公开(公告)日：2014-04-15

申请号：US10498947

申请日：2002-12-12

申请人： Christoph Balz

发明人： Christoph Balz

IPC分类号： H04L5/12

CPC分类号： H04L27/38 ,  H04L27/22

摘要： A method and device for graphically representing the I and/or Q components of digitally modulated high frequency signal are described, in which the I or Q components measured in a temporally successive manner are graphically represented side-by-side on a display device.

摘要翻译： 描述用于图形地表示数字调制高频信号的I和/或Q分量的方法和装置，其中以时间连续方式测量的I或Q分量在显示装置上并排地图形表示。

公开(公告)号：US08693562B2

公开(公告)日：2014-04-08

申请号：US10845471

申请日：2004-05-13

申请人： Jacques Meyer

发明人： Jacques Meyer

IPC分类号： H04L5/12

CPC分类号： H04L27/183 ,  H04L27/22

摘要： A process receives a composite signal transmitted via a nonlinear data transmission channel, with the composite signal having a first signal UL and a second signal LL. The process includes the following: demodulating and decoding the first signal UL by using a first demodulation and decoding chain in order to regenerate first information of the first signal UL; recoding and shaping to produce a continuous time waveform; applying a nonlinearity function based on a set of coefficients updated according to an adaptive correlation calculation process to the continuous time waveform; subtracting the result of the nonlinearity function from the composite signal in order to generate a result E; and demodulating and decoding the result E by using a second demodulation and decoding chain in order to regenerate second information of the second signal LL.

摘要翻译： 处理接收经由非线性数据传输信道发送的复合信号，复合信号具有第一信号UL和第二信号LL。 该过程包括：通过使用第一解调和解码链来解调和解码第一信号UL，以便再生第一信号UL的第一信息; 记录和整形以产生连续的时间波形; 将基于根据自适应相关计算处理更新的系数集合的非线性函数应用于所述连续时间波形; 从复合信号中减去非线性函数的结果，以产生结果E; 并且通过使用第二解调和解码链对结果E进行解调和解码，以便再生第二信号LL的第二信息。

公开(公告)号：US08675756B2

公开(公告)日：2014-03-18

申请号：US13189769

申请日：2011-07-25

申请人： Angelo Poloni ,  Stefano Valle ,  Stefano Vincenti

发明人： Angelo Poloni ,  Stefano Valle ,  Stefano Vincenti

IPC分类号： H04L5/12 ,  H04L23/02

CPC分类号： H04L1/0045 ,  H03M13/255

摘要： A method for identifying a corrupted received signal that includes symbols is described. Each symbol may have a value of a Galois field associated therewith. The receiver may be configured to store a logarithm of normalized probability mass functions and corresponding Galois field values for each of the symbols. The normalized probability mass functions may be normalized with respect to a greatest probability mass function of a given symbol. The method may include comparing, for each symbol, a logarithm of normalized probability of an n-th best probability value with a respective threshold, counting a number of the logarithms that exceed the respective threshold and generating, for each symbol, a score corresponding to the number. The method may also include calculating a moving average of the scores, and comparing the moving average with an output threshold and flagging a just received symbol as corrupted based upon the comparison.

摘要翻译： 描述了用于识别包括符号的损坏的接收信号的方法。 每个符号可以具有与其相关联的伽罗瓦域的值。 接收机可以被配置为存储用于每个符号的归一化概率质量函数和对应的伽罗瓦域值的对数。 归一化概率质量函数可以相对于给定符号的最大概率质量函数进行归一化。 该方法可以包括对于每个符号比较具有相应阈值的第n个最佳概率值的归一化概率的对数，对超过相应阈值的对数进行计数，并且对于每个符号，生成对应于 号码。 该方法还可以包括计算分数的移动平均值，以及将移动平均值与输出阈值进行比较，并且基于比较标记刚被接收的符号被破坏。

公开(公告)号：US08670494B2

公开(公告)日：2014-03-11

申请号：US13145315

申请日：2009-05-13

申请人： Woo Suk Ko ,  Sang Chul Moon

发明人： Woo Suk Ko ,  Sang Chul Moon

IPC分类号： H04L5/12

CPC分类号： H04L27/34 ,  H04B7/022 ,  H04L1/0057 ,  H04L1/0071 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2628 ,  H04L27/265 ,  H04L69/22

摘要： The present invention relates to method of transmitting and receiving signals and a corresponding apparatus. One aspect of the present invention relates to an efficient layer 1 (L1) processing method for a transmitter and a receiver using data slices.

摘要翻译： 本发明涉及发送和接收信号的方法及相应的装置。 本发明的一个方面涉及使用数据片的发射机和接收机的有效层1（L1）处理方法。

公开(公告)号：US08665977B2

公开(公告)日：2014-03-04

申请号：US12550422

申请日：2009-08-31

申请人： Shau-Yu Cheng ,  Cheng-Yuan Lee ,  Wei-Chi Lai ,  Terng-Yin Hsu

发明人： Shau-Yu Cheng ,  Cheng-Yuan Lee ,  Wei-Chi Lai ,  Terng-Yin Hsu

IPC分类号： H04L5/12 ,  H04L23/02

CPC分类号： H04L25/03242 ,  H04L27/34

摘要： A MIMO detection method for a receiver in a MIMO system using N-QAM for modulation, the MIMO detection method including generating a plurality of symbol vector sets and a plurality of search radiuses, selecting a candidate symbol vector set corresponding to a highest level of a multilevel structure of N-QAM constellation, generating a search space corresponding to a lower level of the multilevel structure of N-QAM constellation according to the selected candidate symbol vector set, confirming which level the search space corresponds to, and generating a detection signal according to the search space when the level of the search space is the lowest level of the multilevel structure of the N-QAM constellation.

摘要翻译： 一种MIMO检测方法，用于使用N-QAM进行调制的MIMO系统中的接收机，所述MIMO检测方法包括：生成多个符号向量集合和多个搜索半径;选择对应于最高级别的候选符号向量集合 N-QAM星座的多级结构，根据所选择的候选符号向量集合产生对应于N-QAM星座的多级结构的较低级别的搜索空间，确定搜索空间对应于哪个级别，并产生检测信号 当搜索空间的级别是N-QAM星座的多级结构的最低级时，到搜索空间。

公开(公告)号：US08660199B2

公开(公告)日：2014-02-25

申请号：US13434040

申请日：2012-03-29

申请人： Myeong-Cheol Shin

发明人： Myeong-Cheol Shin

IPC分类号： H04L5/12

CPC分类号： H04L27/38 ,  H04L1/0047 ,  H04L1/0054 ,  H04L25/0224 ,  H04L25/0238 ,  H04L27/3444

摘要： To demodulate a quadrature amplitude modulation (QAM) signal, a reception point is determined corresponding to a symbol in the QAM signal that is received where the symbol is mapped to one reference point of a plurality of reference points in a rotated constellation and the plurality of reference points are represented by an in-phase (I) coordinate and a quadrature-phase (Q) coordinate. A plurality of candidate points corresponding to a portion of the plurality of reference points are selected based on distances between the reception point and the respective reference points. The reception point is demapped by calculating a plurality of log-likelihood ratios based on the plurality of candidate points, the plurality of log-likelihood ratios corresponding to bits of data represented by the reception point.

摘要翻译： 为了对正交幅度调制（QAM）信号进行解调，接收点被确定为与在符号映射到旋转星座中的多个参考点的一个参考点的接收的QAM信号中的符号相对应，并且多个 参考点由同相（I）坐标和正交相位（Q）坐标表示。 基于接收点和各个参考点之间的距离来选择对应于多个参考点的一部分的多个候选点。 通过基于多个候选点计算多个对数似然比，对接收点进行解映射，多个对数似然比对应于由接收点表示的数据的比特。

公开(公告)号：US08654631B2

公开(公告)日：2014-02-18

申请号：US12579924

申请日：2009-10-15

申请人： John Alson Hicks, III

发明人： John Alson Hicks, III

IPC分类号： H04L5/12

CPC分类号： G06F11/2007 ,  G06F11/2005 ,  G06F11/2012 ,  H04L41/0681 ,  H04L41/5067 ,  H04L43/0811 ,  H04L43/10 ,  H04L45/28

摘要： A method, computer readable medium and apparatus for providing a back-up internet protocol (IP) connection are disclosed. For example, the method monitors a primary IP connection to a subscriber premises, detects a failure or a degradation of the primary IP connection to the subscriber premises and activates a back-up IP connection to the subscriber premises.

摘要翻译： 公开了一种用于提供备用因特网协议（IP）连接的方法，计算机可读介质和装置。 例如，该方法监视到用户房屋的主IP连接，检测到用户房屋的主IP连接的故障或劣化，并激活到用户房屋的备用IP连接。

公开(公告)号：US08599944B2

公开(公告)日：2013-12-03

申请号：US12305559

申请日：2007-06-19

申请人： Junji Sato ,  Shigeru Kobayashi ,  Suguru Fujita

发明人： Junji Sato ,  Shigeru Kobayashi ,  Suguru Fujita

IPC分类号： H04L5/12 ,  H04B1/00 ,  H04B7/212

CPC分类号： H04L25/4902 ,  H03C1/36 ,  H04B1/7174 ,  H04B1/7176 ,  H04L27/04

摘要： Provided is a pulse modulation circuit capable of generating a pulse modulation signal with a steep rise and a desired pulse width at a desired timing not depending on a transmission signal sequence. In this circuit, a control signal generation unit (110) generates a first control signal if transmission data (S11) is “1” and a second control signal if the transmission data (S11) is “0.” The control signal generation unit (110) controls an oscillator (1200) of an intermittently operating circuit (120) to be at an oscillation state for outputting a desired first oscillation signal while the first control signal is turned ON and controls the oscillator (1200) to be at an idling state for outputting a second oscillation signal having a lower amplitude than the first oscillation signal while the second control signal is turned ON.

摘要翻译： 提供了一种脉冲调制电路，其能够在不依赖于发送信号序列的期望定时产生具有陡峭上升和期望脉冲宽度的脉冲调制信号。 在该电路中，如果发送数据（S11）为“1”，则控制信号生成单元（110）生成第一控制信号，如果发送数据（S11）为“0”，则生成第二控制信号。 控制信号生成单元（110）将间歇运行电路（120）的振荡器（1200）控制为在第一控制信号接通时输出期望的第一振荡信号的振荡状态，并且控制振荡器（1200） 处于空闲状态，用于在第二控制信号接通时输出具有比第一振荡信号更低的振幅的第二振荡信号。

公开(公告)号：US08582677B2

公开(公告)日：2013-11-12

申请号：US12479996

申请日：2009-06-08

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04L5/12

CPC分类号： H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/03197 ,  H04L25/03242 ,  H04L27/3416 ,  H04L27/38 ,  H04L2025/0342 ,  H04L2025/03426

摘要： There is provided a communication apparatus, including a transmission pattern generation unit that generates a transmission pattern according to a modulation method, a metric calculation unit that calculates an inter-signal distance between a received signal vector of received signals and an estimation vector, which is a product of channel information and the transmission pattern, a maximum likelihood pattern determination unit that determines a maximum likelihood signal pattern from the inter-signal distance calculated by the metric calculation unit, and an error estimation unit that estimates a phase error component and an amplitude error component contained in the received signal vector. The metric calculation unit calculates the inter-signal distance between the received signal vector and the estimation vector by using the phase error component and/or the amplitude error component estimated by the error estimation unit.

摘要翻译： 提供了一种通信装置，包括根据调制方法生成传输模式的传输模式生成单元，计算接收信号的接收信号矢量与估计向量之间的信号间距离的度量计算单元， 信道信息和传输模式的乘积，最大似然模式确定单元，其根据由度量计算单元计算的信号间距离确定最大似然信号模式;以及误差估计单元，其估计相位误差分量和振幅 包含在接收信号矢量中的误差分量。 度量计算单元通过使用由误差估计单元估计的相位误差分量和/或振幅误差分量来计算接收信号矢量与估计矢量之间的信号间距离。