公开(公告)号：US07424067B2

公开(公告)日：2008-09-09

申请号：US10532155

申请日：2003-10-21

Applicant: Yves Vanderperren ,  Wim Dehane

Inventor： Yves Vanderperren ,  Wim Dehane

IPC: H04L27/00

CPC classification number: H04L27/2662 ,  H04L27/2657 ,  H04L27/2675

Abstract: A receiver and a method for receiving a signal including a carrier modulated with a known training sequence is described in which an estimate a carrier frequency offset is obtained from an autocorrelation signal by autocorrelation of the part of the received signal containing a known training sequence. The received signal is compensated with the frequency offset obtained to form a compensated received signal, and a timing reference for the received signal is obtained by cross-correlation of the compensated received signal with a known training sequence.

Abstract translation: 描述了一种用于接收包括用已知训练序列调制的载波的信号的接收机和方法，其中通过对包含已知训练序列的接收信号的部分进行自相关，从自相关信号获得载波频率偏移的估计。 接收到的信号用获得的频率补偿补偿以形成补偿的接收信号，并且通过补偿的接收信号与已知训练序列的互相关来获得接收信号的定时参考。

公开(公告)号：US07386071B2

公开(公告)日：2008-06-10

申请号：US11337029

申请日：2006-01-20

Applicant: Lucille Rouault ,  Sylvain Chaillou ,  Joseph Boutros

Inventor： Lucille Rouault ,  Sylvain Chaillou ,  Joseph Boutros

IPC: H03K9/04 ,  H04L27/06

CPC classification number: H04L25/4902 ,  H04B1/719

Abstract: The method is for decoding an incident UWB signal including successive incident pulses respectively received during successive Pulse Repetition Periods (PRP). The method includes determining a correlation matrix, whose terms respectively represent the correlation between all the M possible symbols transmitted in a current (PRP), and at least in the previous and in the next (PRP), and performing a correlation between an incident current pulse received during a current PRP and the M possible symbols transmitted in the current PRP and at least in the previous and in the next PRPs for obtaining a correlation vector. The method also includes preprocessing the correlation vector including reducing the effect of ISI from the correlation vector by using the correlation matrix, and decoding the preprocessed correlation vector for obtaining the bits of the transmitted symbol included in the incident received current pulse.

Abstract translation: 该方法用于解码包括在连续脉冲重复周期（PRP）期间分别接收的连续入射脉冲的入射UWB信号。 该方法包括确定相关矩阵，其相关矩阵分别表示在当前（PRP）中传输的所有M个可能符号与至少前一个和下一个（PRP）之间的相关性，并且执行入射电流 在当前PRP期间接收到的脉冲和在当前PRP中以及至少在前一个和下一个PRP中发送的M个可能符号以获得相关向量。 该方法还包括对相关矢量进行预处理，包括通过使用相关矩阵从相关矢量中减少ISI的影响，以及对预处理的相关矢量进行解码，以获得包含在入射接收电流脉冲中的发送符号的位。

公开(公告)号：US20080069260A1

公开(公告)日：2008-03-20

申请号：US11850934

申请日：2007-09-06

Applicant: Armin Wellig

Inventor： Armin Wellig

IPC: H04L7/00

CPC classification number: H04B1/7183 ,  H03M13/29 ,  H04J3/0658 ,  H04L7/0066

Abstract: A method is for estimating drift between a first clock used in a digital transmission processing of a first Ultra Wide Band (UWB) pulse train signal and a second clock used in a digital reception processing of a second UWB pulse train signal resulting from a transmission of the first UWB pulse train signal. The method may include sampling the second UWB pulse train signal, and calculating trellis information representative of a trellis having reference paths respectively associated to different reference values of the drift and including sample transitions of a sampled third signal from the sampled second UWB pulse train signal. The method may further include processing the sampled third signal along the trellis for obtaining a path metric for each processed reference path, and selecting the processed reference path having a greatest path metric, the drift being the reference value associated to the selected processed reference path.

Abstract translation: 一种用于估计在第一超宽带（UWB）脉冲串信号的数字传输处理中使用的第一时钟与在第二UWB脉冲串信号的传输的第二UWB脉冲串信号的数字接收处理中使用的第二时钟之间的漂移的方法 第一个UWB脉冲串信号。 该方法可以包括对第二UWB脉冲串信号进行采样，以及计算代表具有分别与漂移的不同参考值相关联的参考路径的网格的格状信息，并且包括来自采样的第二UWB脉冲串信号的采样第三信号的样本转换。 该方法还可以包括沿着网格处理采样的第三信号，以获得每个处理的参考路径的路径度量，以及选择具有最大路径量度的经处理参考路径，该漂移是与所选择的处理参考路径相关联的参考值。

公开(公告)号：US07286617B2

公开(公告)日：2007-10-23

申请号：US10364294

申请日：2003-02-10

Applicant: Yves Vanderperren ,  Wim Dehaene

Inventor： Yves Vanderperren ,  Wim Dehaene

IPC: H04L27/06

CPC classification number: H04L27/2662 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2675

Abstract: A receiver and a method for receiving a signal including a carrier modulated with a known training sequence is described in which an estimate a carrier frequency offset is obtained from an autocorrelation signal by autocorrelation of the part of the received signal containing a known training sequence. The received signal is compensated with the frequency offset obtained to form a compensated received signal, and a timing reference for the received signal is obtained by cross-correlation of the compensated received signal with a known training sequence.

Abstract translation: 描述了一种用于接收包括用已知训练序列调制的载波的信号的接收机和方法，其中通过对包含已知训练序列的接收信号的部分进行自相关，从自相关信号获得载波频率偏移的估计。 接收到的信号用获得的频率补偿补偿以形成补偿的接收信号，并且通过补偿的接收信号与已知训练序列的互相关来获得接收信号的定时参考。

公开(公告)号：US07277508B2

公开(公告)日：2007-10-02

申请号：US10693674

申请日：2003-10-24

Applicant: Friedbert Berens ,  Ettore Messina ,  Miguel Kirsch

Inventor： Friedbert Berens ,  Ettore Messina ,  Miguel Kirsch

IPC: H03D1/00 ,  H03M13/03

CPC classification number: H03M13/3911 ,  H03M13/2957 ,  H03M13/612 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0066

Abstract: A method is provided for decoding a turbo-code encoded signal in a receiver. According to the method, the signal is received from a transmission channel, and the signal is digitally turbo-code decoded. Additionally, a quality information representative of conditions of the channel state estimation is dynamically determined, and the quality information is dynamically compared with a predetermined criteria for defining good or bad estimation conditions. A Maximum-A-Posteriori algorithm in the logarithmic domain is dynamically selected for good estimation conditions, or an approximation of the Maximum-A-Posteriori algorithm in the logarithmic domain is dynamically selected for bad estimation conditions. Also provided is a receiver that implements such a decoding method.

Abstract translation: 提供了一种用于对接收机中的turbo码编码信号进行解码的方法。 根据该方法，从传输信道接收信号，并且信号被数字turbo码解码。 此外，动态地确定代表信道状态估计的条件的质量信息，并且将质量信息与用于定义好的或不良的估计条件的预定标准动态地比较。 动态地选择对数域中的最大后验算法，以获得良好的估计条件，或者对于不良估计条件动态地选择对数域中的最大后验算法的近似值。 还提供了一种实现这种解码方法的接收机。

公开(公告)号：US20070217488A1

公开(公告)日：2007-09-20

申请号：US11685356

申请日：2007-03-13

Applicant: Lydi Smaini ,  Pierre Baudin

Inventor： Lydi Smaini ,  Pierre Baudin

IPC: H04L5/16

CPC classification number: H04B1/525

Abstract: A correction signal is generated by applying an adjustable gain/attenuation value and an adjustable phase value to a transmission signal sampled on the transmission channel after the transmission frequency transposition. The correction signal is subtracted from the signal present on the receive channel before performing the receiver frequency transposition. Digital information representative of the subtracted signal is generated, and the value of gain/attenuation and the value of phase are adjusted in such a manner as to reduce or minimize the digital information.

Abstract translation: 通过将可调节的增益/衰减值和可调节的相位值应用于在传输频率转置之后在传输信道上采样的传输信号来产生校正信号。 在执行接收机频率转置之前，从接收信道上存在的信号中减去校正信号。 产生代表减法信号的数字信息，并且以减少或最小化数字信息的方式调整增益/衰减值和相位值。

公开(公告)号：US07254534B2

公开(公告)日：2007-08-07

申请号：US10622021

申请日：2003-07-17

Applicant: Michael Ansorge ,  Giuseppina Biundo Lotito ,  Benito Carnero

Inventor： Michael Ansorge ,  Giuseppina Biundo Lotito ,  Benito Carnero

IPC: G10L19/12

CPC classification number: G10L19/12

Abstract: The speech is sampled in such a way as to obtain successive voice frames each including a predetermined number of samples, and with each voice frame are determined parameters of a code-excited linear prediction model. The parameters include a long-term excitation digital word vi extracted from an adaptive coded directory LTD, and an associated long-term gain Ga, as well as a short-term excitation word cj extracted from a fixed coded directory STD and an associated short-term gain Gc. The product of the long-term excitation extracted word times the associated long-term gain is summed SM with the product of the short-term excitation extracted word times the associated short-term gain. The summed digital word is filtered in a low-pass filter FLCT having a cutoff frequency greater than a quarter of the sampling frequency and less than a half of the latter, and the adaptive coded directory is updated with the filtered word.

Abstract translation: 对语音进行采样，以获得每个包括预定数量的采样的连续语音帧，并且每个语音帧是确定码激励线性预测模型的参数。 这些参数包括从自适应编码目录LTD提取的长期激励数字字v i i和相关联的长期增益Ga，以及从固定的解码器提取的短期激励词cj 编码目录STD和相关联的短期增益Gc。 长期激励提取词乘以相关长期增益的乘积与短期激励提取词乘积相关的短期增益的乘积SM相加。 相加的数字字在具有大于采样频率的四分之一的截止频率并且小于后者的一半的低通滤波器FLCT中被滤波，并且用滤波的字更新自适应编码目录。

公开(公告)号：US07254369B2

公开(公告)日：2007-08-07

申请号：US10233055

申请日：2002-08-30

Applicant: David Chappaz

Inventor： David Chappaz

IPC: H04B17/00 ,  G01S13/78 ,  G01P21/00

CPC classification number: H04L25/0212 ,  G01S11/026

Abstract: Estimating the speed of movement of a mobile terminal includes estimating the impulse response of the transmission channel at a given instant, and estimating the time derivative of the estimated impulse response. Estimating the speed also includes determining of a ratio of the energy of the estimated impulse response to the energy of the estimated time derivative.

Abstract translation: 估计移动终端的移动速度包括估计在给定时刻的传输信道的脉冲响应，以及估计估计的脉冲响应的时间导数。 估计速度还包括确定估计的脉冲响应的能量与估计的时间导数的能量的比率。

公开(公告)号：US07254202B2

公开(公告)日：2007-08-07

申请号：US10814824

申请日：2004-03-31

Applicant: Chiara Cattaneo ,  Nils Rinaldi ,  Matteo Frigerio ,  Régis Cattenoz

Inventor： Chiara Cattaneo ,  Nils Rinaldi ,  Matteo Frigerio ,  Régis Cattenoz

IPC: H04L7/00

CPC classification number: H04B1/7183 ,  H04B2001/6908

Abstract: An incident signal contains a preamble including a training sequence having a series of pulses whose polarity and time shifts are defined by respective polarity code and time-hopping code. A method includes a digital cross-correlation of the received signal with the training sequence. The cross-correlation algebraically sums in accordance with the polarity code windows of the received signal. The starting points of the windows are determined by the time-hopping code. The cross-correlation further includes detecting the end point of the preamble from the result of the digital cross-correlation. When the size of the receiving buffer, i.e., the size of the window is smaller than the number N of samples of each replica of the training sequence, it is particularly advantageous that the digital cross-correlation be performed iteratively in a block-by-block fashion. The computation of each block is split into M slices which are computed by algebraically summing windows N/M samples long.

Abstract translation: 入射信号包含前导码，其包括具有一系列脉冲的训练序列，其极性和时间偏移由相应的极性码和跳时码定义。 一种方法包括接收信号与训练序列的数字互相关。 互相关代数根据接收信号的极性码窗口相加。 窗口的起点由跳时码决定。 互相关还包括从数字互相关的结果检测前同步码的终点。 当接收缓冲器的大小（即，窗口的大小）小于训练序列的每个副本的样本数N时，特别有利的是，数字互相关是逐个逐行执行的， 块时尚。 每个块的计算被分成M个片段，它们通过对N / M个样本长的代数求和来计算。

公开(公告)号：US20060206778A1

公开(公告)日：2006-09-14

申请号：US11366167

申请日：2006-03-02

Applicant: Norbert Wehn ,  Frank Kienle ,  Torben Brack

Inventor： Norbert Wehn ,  Frank Kienle ,  Torben Brack

IPC: H03M13/00

CPC classification number: H03M13/1165 ,  H03M13/1137 ,  H03M13/635 ,  H03M13/6516 ,  H03M13/6566

Abstract: The LDPC decoder includes a processor for updating messages exchanged iteratively between variable nodes and check nodes of a bipartite graph of the LDPC code. The decoder architecture is a partly parallel architecture clocked by a clock signal. The processor includes P processing units. First variable nodes and check nodes are mapped on the P processing units according to two orthogonal directions. The decoder includes P main memory banks assigned to the P processing units for storing all the messages iteratively exchanged between the first variable nodes and the check nodes. Each main memory bank includes at least two single port memory partitions and one buffer the decoder also includes a shuffling network and a shift memory.

Abstract translation: LDPC解码器包括用于更新在LDPC码的二分图的可变节点和校验节点之间迭代交换的消息的处理器。 解码器架构是由时钟信号计时的部分并行架构。 处理器包括P处理单元。 第一个可变节点和校验节点根据两个正交方向映射在P个处理单元上。 解码器包括分配给P处理单元的P个主存储器组，用于存储在第一可变节点和校验节点之间迭代交换的所有消息。 每个主存储器包括至少两个单端口存储器分区和一个缓冲器。 解码器还包括洗牌网络和移位存储器。