公开(公告)号：WO2003098832A2

公开(公告)日：2003-11-27

申请号：PCT/BE2003/000087

申请日：2003-05-19

Applicant: STMICROELECTRONICS N.V. ,  STMICROELECTRONICS BELGIUM N.V. ,  PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04B3/23

CPC classification number: H04B3/23 ,  H04L25/03012 ,  H04L25/03159 ,  H04L27/2647

Abstract: An equalizer for a multi carrier transmission system, converts a transmitted multi carrier signal into sampled frequency domain signals, and suppresses time domain delay dispersion, on the sampled frequency domain signals. It exploits circulant decomposition of a Toeplitz matrix to enable the computationally heavy evaluation of a matrix multiplied by a vector, to be avoided. Increased precision arises from the frequency domain processing being equivalent to a longer time domain FIR filter than is normally practical. The amount of compensation for different carriers can be adjusted, which can lead to increased precision.

Abstract translation: 一种用于多载波传输系统的均衡器，将所发送的多载波信号转换成采样的频域信号，并对采样的频域信号抑制时域延迟色散。 它利用Toeplitz矩阵的循环分解，使得可以计算重估计矩阵乘以向量，以避免。 与通常实际相比，频域处理相当于更长时间的FIR滤波器产生的精度提高。 可以调整不同载体的补偿量，从而提高精度。

公开(公告)号：WO2008046804A1

公开(公告)日：2008-04-24

申请号：PCT/EP2007/060945

申请日：2007-10-15

Applicant: STMICROELECTRONICS N.V. ,  BERENS, Friedbert ,  RÜEGG, Andreas

Inventor： BERENS, Friedbert ,  RÜEGG, Andreas

IPC: H04B7/005

CPC classification number: H04W52/242 ,  H04B1/719 ,  H04L27/2601 ,  H04W52/10 ,  H04W52/246

Abstract: According to an embodiment, the method of managing the operation of a first apparatus belonging to a first communication system and adapted to exchange wit h i n said first communication system a multi-carriers modulated signal on several sub- carriers, comprises detecting (10) at said first apparatus (APP1) the eventual presence of an interfering signal emitted from a victim apparatus (APP2) on at least one sub-carrier, determining (11) at said first apparatus the path loss between both apparatuses, determining (12) from said path loss and from an allowed interference level at said victim apparatus a maximum allowed transmit power on said at least one sub-carrier of a multi-carriers modulated signal to be transmitted fro m said first apparatus, adjusting (13) within said first apparatus the processing of said multi-carriers modulated signal to be transmitted in accordance wit h said maximum allowed transmit power.

Abstract translation: 根据实施例，一种管理属于第一通信系统并适于与所述第一通信系统交换多个子载波上的多载波调制信号的第一装置的操作的方法包括：检测（10）在所述第一通信系统 第一装置（APP1）在至少一个子载波上最终存在从受害装置（APP2）发射的干扰信号，在所述第一装置处确定（11）两个装置之间的路径损耗，从所述路径确定（12） 在所述受害者设备的允许的干扰电平下，在所述第一设备上发送的多载波调制信号的所述至少一个子载波上的最大允许发射功率，在所述第一设备内调整（13）处理 的所述多载波调制信号，根据所述最大允许发射功率发射。

公开(公告)号：WO2005027400A1

公开(公告)日：2005-03-24

申请号：PCT/EP2004/012184

申请日：2004-09-15

Applicant: CEA, ETABLISSEMENT DE CARACTERE SCIENTIFIQUE TECHNIQUE ET INDUSTRIEL ,  STMICROELECTRONICS N.V. ,  ISSON, Olivier ,  PIERROT, Jean-Benoît

Inventor： ISSON, Olivier ,  PIERROT, Jean-Benoît

IPC: H04L7/04

CPC classification number: H04L27/2656 ,  H04L27/2675

Abstract: Detection method and device for a receiver in a digital communication system designed to process a frame comprising a periodic sub-set of length n, said method comprising the following steps: - determining a first vector u having a length n; - determining a second shifted vector v; - calculating a correlation function between said first and second vectors; - calculating a quadratic error function between said first and second vectors; - calculating a first cost function that is a linear combination of both preceding functions and, according to the sign of the result, - calculating a second cost function of frame beginning estimate; and - starting the communication system receiver.

Abstract translation: 设计用于处理包括长度为n的周期性子集的帧的数字通信系统中的接收机的检测方法和装置，所述方法包括以下步骤： - 确定具有长度n的第一向量u; - 确定第二移位矢量v; - 计算所述第一和第二向量之间的相关函数; - 计算所述第一和第二向量之间的二次误差函数; - 计算作为前述功能的线性组合的第一成本函数，并且根据结果的符号， - 计算帧开始估计的第二成本函数; 和 - 启动通信系统接收器。

公开(公告)号：WO2004036861A2

公开(公告)日：2004-04-29

申请号：PCT/BE2003/000178

申请日：2003-10-21

Applicant: STMICROELECTRONICS N.V. ,  VANDERPERREN, Yves ,  DEHAENE, Wim

Inventor： VANDERPERREN, Yves ,  DEHAENE, Wim

IPC: H04L27/26

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

Abstract: A receiver and a method for receiving a signal comprising 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：WO2003098832A3

公开(公告)日：2003-11-27

申请号：PCT/BE2003/000087

申请日：2003-05-19

Applicant: STMICROELECTRONICS N.V. ,  STMICROELECTRONICS BELGIUM N.V. ,  PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04L27/26

Abstract: An equalizer for a multi carrier transmission system, converts a transmitted multi carrier signal into sampled frequency domain signals, and suppresses time domain delay dispersion, on the sampled frequency domain signals. It exploits circulant decomposition of a Toeplitz matrix to enable the computationally heavy evaluation of a matrix multiplied by a vector, to be avoided. Increased precision arises from the frequency domain processing being equivalent to a longer time domain FIR filter than is normally practical. The amount of compensation for different carriers can be adjusted, which can lead to increased precision.

公开(公告)号：US09325488B2

公开(公告)日：2016-04-26

申请号：US14817996

申请日：2015-08-04

Applicant: STMicroelectronics N.V.

Inventor： Steven R. Norsworthy ,  Jason Rupert Redgrave

IPC: H04L7/00 ,  H03H17/06 ,  H04L7/02

CPC classification number: H04L7/0008 ,  H03H17/0614 ,  H03H17/0628 ,  H03H2218/04 ,  H04L7/0025 ,  H04L7/005 ,  H04L7/02

Abstract: An interpolator or decimator includes an elastic storage element in the signal path between first and second clock domains. The elastic element may, for example, be a FIFO which advantageously allows short term variation in sample clocks to be absorbed. A feedback mechanism controls a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified interpolator and decimator.

Abstract translation: 内插器或抽取器包括在第一和第二时钟域之间的信号路径中的弹性存储元件。 弹性元件可以例如是有利地允许采样时钟的短期变化被吸收的FIFO。 反馈机制控制基于Δ-Σ调制的模N计数器的采样时钟发生器。 与Δ-Σ调制器和计数器结合的弹性元件产生噪声形式的频率锁定环，而没有额外的组件，导致了非常简化的内插器和抽取器。

公开(公告)号：US20140078471A1

公开(公告)日：2014-03-20

申请号：US14026310

申请日：2013-09-13

Applicant: STMicroelectronics N.V.

Inventor： Laurent CUISENIER ,  Frederique ROFFET

IPC: G02B27/22 ,  G03B21/14

CPC classification number: G02B27/22 ,  G02B27/646 ,  G03B21/14 ,  H04N9/3173 ,  H04N9/3185 ,  H04N9/3194

Abstract: It is proposed a method for the projection of a sequence of images onto a projection surface by a handheld device having an embedded projector, said method comprising, for an input image to be projected of said sequence of images: a step of evaluation wherein a spatial position variation is evaluated with respect to a reference spatial position of said handheld device; and said spatial position variation is defined by a spatial orientation variation and a spatial vector variation; said spatial vector variation being determined by 3 independent coordinates; and at least one of said 3 independent coordinates is provided by a stereoscopic sensor; a step of compensation wherein a compensated image is generated from said input image to be projected depending on said spatial position variation; and a step of projecting onto said projection surface said compensated image.

Abstract translation: 提出了一种用于通过具有嵌入式投影仪的手持式设备将一系列图像投影到投影表面上的方法，所述方法包括：用于投影所述图像序列的输入图像：评估步骤，其中空间 相对于所述手持装置的参考空间位置评估位置变化; 并且所述空间位置变化由空间取向变化和空间矢量变化来定义; 所述空间矢量变化由3个独立坐标确定; 并且所述3个独立坐标中的至少一个由立体传感器提供; 补偿步骤，其中根据所述空间位置变化从所述要投影的所述输入图像生成补偿图像; 以及将所述补偿图像投影到所述投影面上的步骤。

公开(公告)号：US20040254969A1

公开(公告)日：2004-12-16

申请号：US10745948

申请日：2003-12-24

Applicant: STMicroelectronics N.V.

Inventor： Fabio Pisoni

IPC: G06F015/00

CPC classification number: H04L27/2662 ,  H04L27/2657

Abstract: A clock offset compensation arrangement may include a fractional interpolator for applying a trigonometric interpolation to a sampled input signal according to a clock offset signal. It uses transform-based processing in the frequency domain. Compared to a polynomial type interpolation it may be easier to implement, and may achieve a closer approximation to an ideal interpolation. It may reduce the effects of non-linear type errors introduced by truncation of higher powers. The arrangement may be applied to receivers or transmitters of multi-carrier modems, as well as other applications which use rate adaptation or synchronization.

Abstract translation: 时钟偏移补偿装置可以包括用于根据时钟偏移信号对采样的输入信号应用三角插值的分数内插器。 它在频域中使用基于变换的处理。 与多项式类型插值相比，它可能更容易实现，并且可以实现更接近于理想插值的近似。 它可以减少由截断较高功率引入的非线性类型误差的影响。 该布置可以应用于多载波调制解调器的接收机或发射机，以及使用速率适配或同步的其他应用。

公开(公告)号：US20040213325A1

公开(公告)日：2004-10-28

申请号：US10794768

申请日：2004-03-05

Applicant: STMicroelectronics N.V.

Inventor： Lydi Smaini ,  Didier Helal

IPC: H04B001/69

CPC classification number: H04B1/7174 ,  H04L25/4902

Abstract: Successive groups of N bits are delivered at a delivery frequency Fe greater than a predetermined frequency PRF. At least one of the successive groups includes at least one subgroup of at least one bit defining at least one digital cue of position and of shape of at least one base pulse within a window of length 1/PRF. This digital cue is converted into the base pulse, and the base pulse is filtered using a high-pass filter for providing a pulse of the ultra wideband type within the window with a temporal accuracy equal to 1/N*Fe.

Abstract translation: N个比特的连续组以大于预定频率PRF的传送频率Fe传送。 连续组中的至少一个包括至少一个位的至少一个子群，其限定长度为1 / PRF的窗口内的至少一个基本脉冲的位置和形状的至少一个数字提示。 该数字提示被转换成基本脉冲，并且使用高通滤波器对基本脉冲进行滤波，以便以等于1 / N * Fe的时间精度在窗口内提供超宽带类型的脉冲。

公开(公告)号：US20040151259A1

公开(公告)日：2004-08-05

申请号：US10693674

申请日：2003-10-24

Applicant: STMICROELECTRONICS N.V.

Inventor： Friedbert Berens ,  Ettore Messina ,  Miguel Kirsch

IPC: H04L027/06

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。