公开(公告)号：US08160119B2

公开(公告)日：2012-04-17

申请号：US12296767

申请日：2007-04-13

Applicant: Pascal Chevalier ,  François Van De Wiele ,  Christophe Donnet

Inventor： Pascal Chevalier ,  François Van De Wiele ,  Christophe Donnet

IPC: H04B1/00

CPC classification number: H04B1/715 ,  H04B7/08 ,  H04B7/0825

Abstract: A method of fighting interference in a frequency-hopping communication system is disclosed. The system has at least one main sensor and one or more auxiliary sensors. According to at least one embodiment, frequency-hopping signals are received. The frequency-hopping signals are arranged to include useful bands and one or more guard bands inserted between the useful bands, and a ratio of the useful bands to the guard bands being chosen according to a predetermined value of probability of interference interception. Signals of the inserted guard bands having a signal level greater than a predetermined threshold are selected. A set of spatial-filtering weightings are calculated according to a correlation matrix of noise plus jammers alone on the signals selected. Baseband signals of the received frequency-hopping signals are filtered by the set of the calculated spatial-filtering weightings.

Abstract translation: 公开了一种在跳频通信系统中抗干扰的方法。 该系统具有至少一个主传感器和一个或多个辅助传感器。 根据至少一个实施例，接收跳频信号。 跳频信号被布置为包括有用频带和插入有用频带之间的一个或多个保护频带，并且根据干扰拦截概率的预定值选择有用频带与保护频带的比率。 选择具有大于预定阈值的信号电平的插入的保护频带的信号。 根据所选择的信号上的噪声加干扰器的相关矩阵来计算一组空间滤波权重。 所接收的跳频信号的基带信号被所计算的空间滤波权重集合滤波。

公开(公告)号：US07824978B2

公开(公告)日：2010-11-02

申请号：US11516067

申请日：2006-09-06

Applicant: Alain Chantre ,  Bertrand Martinet ,  Michel Marty ,  Pascal Chevalier

Inventor： Alain Chantre ,  Bertrand Martinet ,  Michel Marty ,  Pascal Chevalier

IPC: H01L29/082

CPC classification number: H01L29/66242 ,  H01L21/8249 ,  H01L29/0817 ,  H01L29/36 ,  H01L29/41708 ,  H01L29/42304 ,  H01L29/456 ,  H01L29/7378

Abstract: A bipolar transistor with very high dynamic performance, usable in an integrated circuit. The bipolar transistor has a single-crystal silicon emitter region with a thickness smaller than 50 nm. The base of the bipolar transistor is made of an SiGe alloy.

Abstract translation: 具有非常高动态性能的双极晶体管，可用于集成电路。 双极晶体管具有厚度小于50nm的单晶硅发射极区域。 双极晶体管的基极由SiGe合金制成。

公开(公告)号：US20080226003A1

公开(公告)日：2008-09-18

申请号：US11816906

申请日：2006-02-20

Applicant: Pascal Chevalier ,  Pipon Francois ,  Francois Delaveau

Inventor： Pascal Chevalier ,  Pipon Francois ,  Francois Delaveau

IPC: H04L7/00

CPC classification number: H04L7/0054 ,  H04J3/0602 ,  H04L7/041 ,  H04L7/042

Abstract: A method of synchronizing a substantially rectilinear signal being propagated through an unknown channel, in the presence of unknown substantially rectilinear interferences, received by an array of N sensors, in which a known training sequence s(nT) is used comprising K symbols and sampled at the symbol rate T (s(nT), 0≦n≦{tilde over (K)}1), characterized in that, based on observations x((n+l/p)T) over the duration of the training sequence, where p=T/Te is an integer and Te the sampling period, a virtual observation vector X((n+l/p)T)=[x((n+l/p)T)T, x((n+l/p)T)†]T is defined, as well as a decision criterion or decision statistic taking into account the second-order non-circular nature of the interferences, by using the first and second correlation matrices of the virtual observation vector X((n+l/p)T).

Abstract translation: 一种使由N个传感器阵列接收的未知基本上直线干扰的未知信道传播的基本直线信号同步的方法，其中使用已知的训练序列s（nT），其包括K个符号，并在 符号率T（s（nT），0 <= n <= K1），其特征在于，在训练序列的持续时间内，基于观察值x（（n + 1 / p）T），其中p = T / Te是整数，Te是采样周期，虚拟观测矢量X（（n + 1 / p）T）= [x（（n + 1 / p）T） n + 1 / p）T）定义，以及考虑到二阶非循环性质的决策标准或决策统计量 通过使用虚拟观测向量X（（n + 1 / p）T）的第一和第二相关矩阵来进行干扰。

公开(公告)号：US20070063314A1

公开(公告)日：2007-03-22

申请号：US11523770

申请日：2006-09-19

Applicant: Pascal Chevalier ,  Alain Chantre

Inventor： Pascal Chevalier ,  Alain Chantre

IPC: H01L27/082

CPC classification number: H01L29/66242 ,  H01L29/0649 ,  H01L29/1004 ,  H01L29/66287 ,  H01L29/732 ,  H01L29/7378

Abstract: A bipolar transistor having a base region resting by its lower surface on a collector region and surrounded with a first insulating layer, a base contact conductive region in contact with an external upper peripheral region of the base region, a second insulating region in contact with an intermediary upper peripheral region of the base region, an emitter region in contact with the central portion of the base region. The level of the central portion is higher than the level of the intermediary portion.

Abstract translation: 一种双极晶体管，具有由集电极区域的下表面固定并被第一绝缘层包围的基极区域，与基极区域的外部上部周边区域接触的基极接触导电区域，与第一绝缘区域接触的第二绝缘区域 基极区域的中间上部周边区域，与基极区域的中心部分接触的发射极区域。 中央部分的高度高于中间部分的高度。

公开(公告)号：US20050215021A1

公开(公告)日：2005-09-29

申请号：US11091950

申请日：2005-03-28

Applicant: Alain Chantre ,  Pascal Chevalier

Inventor： Alain Chantre ,  Pascal Chevalier

IPC: H01L21/331 ,  H01L21/8222 ,  H01L29/10 ,  H01L29/737

CPC classification number: H01L29/66242 ,  H01L29/1004 ,  H01L29/7378

Abstract: A method forms a bipolar transistor in a semiconductor substrate of a first conductivity type. The method includes: forming on the substrate a single-crystal silicon-germanium layer; forming a heavily-doped single-crystal silicon layer of a second conductivity type; forming a silicon oxide layer; opening a window in the silicon oxide and silicon layers; forming on the walls of the window a silicon nitride spacer; removing the silicon-germanium layer from the bottom of the window; forming in the cavity resulting from the previous removal a heavily-doped single-crystal semiconductor layer of the second conductivity type; and forming in said window the emitter of the transistor.

Abstract translation: 一种方法在第一导电类型的半导体衬底中形成双极晶体管。 该方法包括：在衬底上形成单晶硅锗层; 形成第二导电类型的重掺杂单晶硅层; 形成氧化硅层; 在硅氧化物和硅层中开一个窗口; 在窗的壁上形成氮化硅间隔物; 从窗户的底部去除硅 - 锗层; 在先前去除的过程中形成在第二导电类型的重掺杂单晶半导体层的空腔中; 并在所述窗口中形成晶体管的发射极。

公开(公告)号：US06807517B2

公开(公告)日：2004-10-19

申请号：US10060249

申请日：2002-02-01

Applicant: Pascal Chevalier ,  Marc Chenu-Tournier ,  Claude Adnet ,  Pascal Larzabal

Inventor： Pascal Chevalier ,  Marc Chenu-Tournier ,  Claude Adnet ,  Pascal Larzabal

IPC: H04B1500

CPC classification number: H04L25/0228 ,  H04L25/0204

Abstract: A method for estimating one or more parameters of a propagation channel, with a priori knowledge of at least one signal, in a system having one or more sensors. The method includes correlating one or more signals received by the sensors with the known signal, sampling the received signals at a sampling period and selecting a number of samples per concatenation, and determining at least one parameter of the propagation channel which enables the most efficient reconstruction of the signals via a maximum likelihood method.

Abstract translation: 一种用于在具有一个或多个传感器的系统中估计具有至少一个信号的先验知识的传播信道的一个或多个参数的方法。 该方法包括将由传感器接收的一个或多个信号与已知信号相关联，在采样周期对接收到的信号进行采样，并且选择每个级联的采样数量，以及确定能够实现最有效重构的传播信道的至少一个参数 的信号通过最大似然法。

公开(公告)号：US06240098B1

公开(公告)日：2001-05-29

申请号：US09011477

申请日：1998-02-20

Applicant: Joël Thibault ,  Pascal Chevalier ,  François Pipon ,  Jean-Jacques Monot ,  Gilbert Multedo

Inventor： Joël Thibault ,  Pascal Chevalier ,  François Pipon ,  Jean-Jacques Monot ,  Gilbert Multedo

IPC: H04Q700

CPC classification number: H04W88/08 ,  H04B7/04 ,  H04B7/0617 ,  H04B7/086

Abstract: A method and apparatus for spatial multiplexing and demultiplexing of radio signals. A multichannel transmitter and receiver is integrated in a base station and coupled to an antenna array. Using digital radio signals containing previously known or non-Gaussian sequences and arranged in frames, the spatial information about each mobile unit is estimated on the basis of the signal received by the receiver for the reception and transmission frequencies. This is done by known sequences or by blind source separation methods. The respective paths of each mobile unit with the power above a predetermined threshold is isolated by spatial filtering in the presence of multiple channel paths in order to provide spatial demultiplexing. Simultaneously, the intended signal is transmitted in the direction of the main path of each mobile unit while protecting each mobile unit from signals transmitted in the direction of other mobile units by spatial filtering with cancelling constraints in order to provide spatial multiplexing.

Abstract translation: 一种用于无线电信号的空间复用和解复用的方法和装置。 多通道发射机和接收机集成在基站中并耦合到天线阵列。 使用包含先前已知的或非高斯序列并且被布置在帧中的数字无线电信号，基于由接收机接收的用于接收和发送频率的信号来估计关于每个移动单元的空间信息。 这是通过已知的序列或通过盲源分离方法完成的。 具有高于预定阈值的功率的每个移动单元的相应路径在存在多个信道路径的情况下通过空间滤波来隔离，以便提供空间解复用。 同时，在每个移动单元的主路径的方向上发送预期信号，同时通过具有消除约束的空间滤波来保护每个移动单元不受其它移动单元的方向的信号的影响，以提供空间复用。

公开(公告)号：US5870430A

公开(公告)日：1999-02-09

申请号：US773128

申请日：1996-12-26

Applicant: Fran.cedilla.ois Pipon ,  Pascal Chevalier ,  Pierre Vila

Inventor： Fran.cedilla.ois Pipon ,  Pascal Chevalier ,  Pierre Vila

IPC: H04L1/06 ,  H04L25/03 ,  H03H7/30

CPC classification number: H04L1/06 ,  H04L25/03057

Abstract: The process according to the invention consists, in order to reduce the number of coefficients of the filters of the spatial part and the temporal part connected to the output of the spatial part, in jointly adapting the coefficients of the filters of each part using an adaptive algorithm according to the paths selected on the basis of a determined criterion. The coefficients are periodically recalculated at the rate of the known symbols in the learning sequences in order to minimize the estimation error apparent between a response signal (d(t)) and the receiver output signal (z(t)).

Abstract translation: 根据本发明的方法包括，为了减少空间部分的滤波器的数量和连接到空间部分的输出的时间部分的系数，使用自适应的方式共同调整每个部分的滤波器的系数 根据确定的标准选择的路径的算法。 以学习序列中的已知符号的速率周期性地重新计算系数，以使响应信号（d（t））和接收器输出信号（z（t））之间显现的估计误差最小化。

公开(公告)号：US08693602B2

公开(公告)日：2014-04-08

申请号：US13508036

申请日：2010-11-03

Applicant: Pascal Chevalier ,  Florian Dupuy

Inventor： Pascal Chevalier ,  Florian Dupuy

IPC: H04B1/12 ,  H04B15/00 ,  H04W4/20 ,  H04J1/12

CPC classification number: H04L25/0232 ,  H04B7/0854 ,  H04L1/0668 ,  H04L27/02 ,  H04L2025/03426

Abstract: Method and system for separating a plurality of users in a communication system including two transmitter antennas and N receiver antennas, said signals transmitted by said users containing symbols an, x( ) corresponding to the vector of the envelopes of the output signals of the 1 to N receiver antennas after a shaping filtering operation, characterized in that it uses a linear mean square filter extended over an observation vector {tilde over (x)}=[x(2n−1)T x(2n)T x(2n−1)H x(2n)H]T where x(2n−1) and x(2n) correspond to the (N×1) (N≧1) observations at the symbol times 2n−1 and 2n.

Abstract translation: 用于在包括两个发射机天线和N个接收机天线的通信系统中分离多个用户的方法和系统，所述用户发送的所述信号包含与1的输出信号的包络的矢量对应的符号a，x（） N个接收机天线在整形滤波操作之后，其特征在于它使用在观测矢量上延伸的线性均方滤波器{（x）} = [x（2n-1）T x（2n）T x（2n-1） ）H x（2n）H] T其中x（2n-1）和x（2n）对应于在符号时间2n-1和2n处的（N×1）（N≥1）观测值。

公开(公告)号：US20100061425A1

公开(公告)日：2010-03-11

申请号：US12296767

申请日：2007-04-13

Applicant: Pascal Chevalier ,  Francois Van De Wiele ,  Christophe Donnet

Inventor： Pascal Chevalier ,  Francois Van De Wiele ,  Christophe Donnet

IPC: H04B1/713

CPC classification number: H04B1/715 ,  H04B7/08 ,  H04B7/0825

Abstract: A method for fighting interference in a communication system is disclosed where the links are of frequency-hopping type. The signal has several frequency time slots. The system has at least one main sensor and one or more auxiliary sensors, one or more guard band are inserted between the useful bands of the frequency-hopping signal. The total area of the inserted guard bands is chosen so as to satisfy a chosen value of probability of interference interception. The signals of the inserted guard bands are selected whose level is greater than a given threshold. A set of spatial-filtering weightings are determined, for each time slot of the signal, by taking account of the correlation matrix of the noise plus jammers alone on the signals selected. The baseband signals of the assemblage of extended blocks are filtered by the set of calculated weightings of the time slot so as to generate extended blocks devoid of interference.

Abstract translation: 公开了一种用于消除通信系统中的干扰的方法，其中链路是跳频类型。 信号有几个频率时隙。 该系统具有至少一个主传感器和一个或多个辅助传感器，在跳频信号的有用频带之间插入一个或多个保护频带。 选择插入的保护频带的总面积以满足选择的干扰截取概率值。 选择插入的保护频带的信号，其电平大于给定的阈值。 对于信号的每个时隙，通过考虑所选择的信号上的噪声加干扰器的相关矩阵来确定一组空间滤波权重。 扩展块的组合的基带信号通过该时隙的计算加权的集合进行滤波，以便生成没有干扰的扩展块。