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：US07804908B2

公开(公告)日：2010-09-28

申请号：US11686545

申请日：2007-03-15

Applicant: Chiara Cattaneo ,  Philippe Rouzet ,  Régis Cattenoz ,  Patrick Conti

Inventor： Chiara Cattaneo ,  Philippe Rouzet ,  Régis Cattenoz ,  Patrick Conti

IPC: H04K1/10

CPC classification number: H04L27/2626 ,  H04L27/368

Abstract: A calibration is performed tone per tone during interframe spacing. A peak detection is used for measuring the level of the corresponding signal, and a gain correction coefficient is stored for correcting the digital complex modulation coefficients provided by the mapping.

Abstract translation: 在帧间间隔期间，每个音调执行校准。 使用峰值检测来测量相应信号的电平，并且存储增益校正系数以校正由映射提供的数字复调制系数。

公开(公告)号：US08396145B2

公开(公告)日：2013-03-12

申请号：US12474403

申请日：2009-05-29

Applicant: Miguel Kirsch ,  Régis Cattenoz ,  Stéphane Tanrikulu ,  Chiara Martinelli-Cattaneo

Inventor： Miguel Kirsch ,  Régis Cattenoz ,  Stéphane Tanrikulu ,  Chiara Martinelli-Cattaneo

IPC: H04K1/10

CPC classification number: H04L5/0007 ,  H04B1/1036 ,  H04J11/0066 ,  H04L5/0044 ,  H04L5/0062 ,  H04L27/2626

Abstract: A transmission band of an analog signal including successive symbols to be transmitted is notched, where each symbol includes sub-carriers to be modulated. In particular, in each symbol the sub-carriers corresponding to a part of the transmission band to be notched are suppressed. In addition, in each symbol a chosen part of the remaining sub-carriers to be modulated is also suppressed.

Abstract translation: 包括要发送的连续符号的模拟信号的发送频带被切断，其中每个符号包括要被调制的子载波。 特别地，在每个符号中，抑制对应于要切换的传输频带的一部分的子载波。 此外，在每个符号中，还要抑制待调制的剩余子载波的选定部分。

公开(公告)号：US07720163B2

公开(公告)日：2010-05-18

申请号：US11612846

申请日：2006-12-19

Applicant: Miguel Kirsch ,  Régis Cattenoz ,  Stéphane Tanrikulu ,  Chiara Cattaneo ,  Fédérico Corsi

Inventor： Miguel Kirsch ,  Régis Cattenoz ,  Stéphane Tanrikulu ,  Chiara Cattaneo ,  Fédérico Corsi

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04L27/2626 ,  H04B1/719 ,  H04L25/03343 ,  H04L27/2607

Abstract: The transmission band of an analog signal to be transmitted is notched, including sub-carriers to be modulated from digital modulation coefficients respectively associated with the sub-carriers. The method includes providing an initial digital signal from successive frequency-domain groups each containing the digital modulation coefficients respectively associated to the sub-carriers. The initial signal is filtered with a frequency resolution greater than the frequency resolution of the frequency-domain groups to remove frequencies corresponding to the sub-carriers to be removed. The filtered signal is windowed using a windowing mask having a representation in the frequency-domain including a main lobe and secondary lobes. The power spectrum of the lobes decrease faster than the inverse of the frequency squared.

Abstract translation: 要发送的模拟信号的发送频带被切断，包括要从分别与子载波相关联的数字调制系数调制的子载波。 该方法包括提供来自连续频域组的初始数字信号，每个包含分别与子载波相关联的数字调制系数。 以大于频域组的频率分辨率的频率分辨率对初始信号进行滤波，以去除与要移除的子载波相对应的频率。 使用具有在包括主瓣和副瓣的频域中的表示的加窗掩模来对经滤波的信号进行加窗。 波瓣的功率谱比频率平方的反比降低得更快。

公开(公告)号：US07054349B2

公开(公告)日：2006-05-30

申请号：US10255741

申请日：2002-09-26

Applicant: Chiara Cattaneo ,  Didier Helal ,  Thierry Arnaud ,  Fritz Lebowsky ,  Régis Cattenoz

Inventor： Chiara Cattaneo ,  Didier Helal ,  Thierry Arnaud ,  Fritz Lebowsky ,  Régis Cattenoz

IPC: H04B1/707

CPC classification number: H04B1/7183 ,  H04B1/71637

Abstract: An incident pulse signal of the ultra wideband type conveys digital information that is coded using pulses having a known theoretical shape. A decoding device includes an input for receiving the incident signal, and for delivering a base signal. A comparator receives the base signal and delivers an intermediate signal representative of the sign of the base signal with respect to a reference. A sampling circuit samples the intermediate signal for delivering a digital signal. A digital processing circuit correlates the digital signal with a reference correlation signal corresponding to a theoretical base signal arising from the reception of a theoretical pulse having the known theoretical shape.