公开(公告)号：US06442219B1

公开(公告)日：2002-08-27

申请号：US09284874

申请日：1999-04-22

申请人： Cyril Bertrand ,  Fabien Buda ,  Emmanuel Lemois

发明人： Cyril Bertrand ,  Fabien Buda ,  Emmanuel Lemois

IPC分类号： H03D100

CPC分类号： H04L25/03273 ,  H04L27/2332 ,  H04L2027/0067

摘要： A method of simultaneous phase synchronization and decoding that makes use of the maximum likelihood criterion is provided. The method is applied to signal packets received at a receiver, wherein the signals have been subjected to convolution encoding at the transmitter. The method consists of calculating branch metrics taking account firstly of firm decisions calculated on the received symbols and secondly of a magnitude that takes account of the phase error between the carrier of the signal and the local oscillator signal used at the receiver, the magnitude weighting the decision variables constituted by the complex digital components of the received symbols. This magnitude is equal to &Sgr;*k for each of the paths studied where: &Sgr;k=&Sgr;Nn=0rk−n·d*k−n.

摘要翻译： 提供了利用最大似然准则的同步相位同步和解码的方法。 该方法被应用于对在接收机处接收到的分组进行信号，其中信号已经在发射机处进行卷积编码。 该方法包括计算分支度量，首先考虑在接收符号上计算的确定决策，其次考虑信号载波与接收机使用的本地振荡器信号之间的相位误差的幅度，幅度加权 决策变量由接收符号的复数数字分量组成。 对于所研究的每个路径，该幅度等于SIGMA * k：

公开(公告)号：US20070019767A1

公开(公告)日：2007-01-25

申请号：US11477916

申请日：2006-06-30

申请人： Fabien Buda ,  Emmanuel Lemois ,  Bertrand Debray

发明人： Fabien Buda ,  Emmanuel Lemois ,  Bertrand Debray

IPC分类号： H04L7/00

CPC分类号： H04L7/0029

摘要： The method for synchronising a base station of a wireless communication system and a subscriber communication equipment located in the coverage area of the base station comprises the steps of compensating a sampling frequency offset in the subscriber equipment by interpolating input and/or output signals of a radio frequency part (30) of the communication equipment to generate samples corresponding to the original symbol timing of the base station, and compensating the carrier frequency offset from the estimate of the sampling clock error.

摘要翻译： 用于同步无线通信系统的基站和位于基站的覆盖区域中的用户通信设备的方法包括以下步骤：通过内插无线电的输入和/或输出信号来补偿用户设备中的采样频率偏移 通信设备的频率部分（30）产生与基站的原始符号定时相对应的样本，并且从采样时钟误差的估计中补偿载波频率偏移。

公开(公告)号：US07706823B2

公开(公告)日：2010-04-27

申请号：US11477916

申请日：2006-06-30

申请人： Fabien Buda ,  Emmanuel Lemois ,  Bertrand Debray

发明人： Fabien Buda ,  Emmanuel Lemois ,  Bertrand Debray

IPC分类号： H04Q7/20

CPC分类号： H04L7/0029

摘要： A method of synchronizing a base station of a wireless communication system and a subscriber communication equipment located in the coverage area of the base station by compensating a sampling frequency offset in the subscriber equipment by interpolating input and/or output signals of a radio frequency part of the communication equipment to generate samples corresponding to the original symbol timing of the base station, and compensating the carrier frequency offset from the estimate of the sampling clock error.

摘要翻译： 一种通过将用户设备的射频部分的输入和/或输出信号进行内插来补偿用户设备中的采样频率偏移来同步无线通信系统的基站和位于基站的覆盖区域中的用户通信设备的方法， 所述通信设备产生对应于所述基站的原始符号定时的样本，以及从所述采样时钟误差的估计中补偿所述载波频率偏移。

公开(公告)号：US06680966B2

公开(公告)日：2004-01-20

申请号：US09418250

申请日：1999-10-15

申请人： Emmanuel Lemois ,  Fabien Buda ,  Joël Richard

发明人： Emmanuel Lemois ,  Fabien Buda ,  Joël Richard

IPC分类号： H04B169

CPC分类号： H04L27/264 ,  H04L5/023 ,  H04L27/2637

摘要： The invention provides a spread-spectrum transmission system with multiple carrier modulation in which the signals for transmission over each of the subcarriers are filtered prior to being transmitted over the subcarrier, thereby making it possible on reception to synchronize the various subcarriers in time, and in which each subcarrier carries a plurality of chips that result from spreading a single symbol. With coherent modulation, the number of chips resulting from spreading a single symbol and transmitted over each subcarrier is selected so as to enable the various subcarriers to be put into phase alignment by recombining the chips coming from the same symbol on each subcarrier. With differential modulation, the transmission over each subcarrier of chips resulting from spreading a single symbol provides resistance to jamming by limiting recombination losses because of the differential modulation.

摘要翻译： 本发明提供一种具有多载波调制的扩频传输系统，其中用于在每个子载波上进行传输的信号在通过子载波传输之前被滤波，从而使得接收时可以及时地同步各个子载波，并且在 每个子载波承载由扩展单个符号而产生的多个码片。 通过相干调制，选择通过扩展单个符号并在每个子载波上传输而产生的码片的数量，以便能够通过在每个子载波上重新组合来自相同符号的码片来使各个子载波进行相位对准。 通过差分调制，通过扩展单个符号导致的每个子载波上的传输通过限制由于差分调制而导致的复合损耗来提供对干扰的抵抗。

公开(公告)号：US06813307B1

公开(公告)日：2004-11-02

申请号：US09581043

申请日：2000-06-08

申请人： Michel Cohen ,  Emmanuel Lemois ,  Laurent Cuvelier

发明人： Michel Cohen ,  Emmanuel Lemois ,  Laurent Cuvelier

IPC分类号： H04B1707

CPC分类号： H04B1/7075 ,  H04B2001/70706 ,  H04B2001/70935 ,  H04J3/0602

摘要： In a radiocommunications system having physical channels each including at least one logical channel, the invention proposes transmitting both the means for acquiring and tracking synchronization and the system information addressed to user stations in a single logical channel referred to as the “synchronization” channel. For this purpose, the synchronization channel carries a repeated detection word (1) together with system information (2) between repeats of the detection word. The system information is subjected to spreading prior to being transmitted over the synchronization channel. The invention makes it possible to limit the amount of system resources that are devoted to providing the functions of synchronization and of broadcasting system information.

摘要翻译： 在具有各自包括至少一个逻辑信道的物理信道的无线电通信系统中，本发明提出在被称为“同步”信道的单个逻辑信道中发送用于获取和跟踪同步的装置和寻址到用户站的系统信息。 为此，同步信道与检测词的重复之间的系统信息（2）携带重复检测字（1）。 在通过同步信道发送之前，对系统信息进行扩频。 本发明可以限制用于提供同步功能和广播系统信息的系统资源的数量。

公开(公告)号：US08219137B2

公开(公告)日：2012-07-10

申请号：US12399905

申请日：2009-03-06

申请人： Amelie Duschesne ,  Emmanuel Lemois

发明人： Amelie Duschesne ,  Emmanuel Lemois

IPC分类号： H04B15/00

CPC分类号： H04W52/243 ,  H04W52/146 ,  H04W52/247

摘要： The present invention concerns a method for controlling the interference level generated by a mobile station comprising at least steps: selecting at least one neighbor base station; estimating a first attenuation value between the mobile station and a current base station, and at least a second attenuation value between the mobile station (MS) and the neighbor base station; estimating an interference level: I_level=BS0_RSS+L0−L wherein BS0_RSS is a first received signal strength at the base station, from the mobile station, L0 is the first attenuation value, and L is one second attenuation value estimated in preceding step, comparing the interference level to a reference interference level, and according to the result of the comparison, sending to the mobile station at least information relative to a maximum transmitted signal strength.

摘要翻译： 本发明涉及一种用于控制由移动台产生的干扰电平的方法，包括至少步骤：选择至少一个相邻基站; 估计所述移动台和当前基站之间的第一衰减值，以及所述移动台（MS）和所述相邻基站之间的至少第二衰减值; 估计干扰电平：I_level = BS0_RSS + L0-L其中BS0_RSS是基站处的第一接收信号强度，从移动站，L0是第一衰减值，L是在前一步骤估计的一秒衰减值， 干扰电平到参考干扰电平，并且根据比较结果，至少向移动台发送关于最大发射信号强度的信息。

公开(公告)号：US07616717B2

公开(公告)日：2009-11-10

申请号：US11560528

申请日：2006-11-16

申请人： Joseph Boutros ,  Emmanuel Lemois

发明人： Joseph Boutros ,  Emmanuel Lemois

IPC分类号： H04B1/707 ,  H04B3/00

CPC分类号： H04L7/0054 ,  H04J3/0682 ,  H04L7/041 ,  H04L7/08 ,  H04N7/173 ,  H04N21/4622 ,  H04N21/4782 ,  H04N21/4786 ,  H04N21/4788 ,  H04N21/6118 ,  H04N21/6168

摘要： A system for determining the burst start timing of a signal includes logic configured to receive the signal, generate correlation moduli and generate a first timing output based on the correlation moduli. The logic may also be configured to receive operating mode information and timing information and generate search controls. The logic may further be configured to identify a maximum of the correlation moduli using the search controls and determine a second timing output associated with the maximum correlation modulus. The second timing output represents a more accurate approximation of a burst start time than the first timing output.

摘要翻译： 用于确定信号的脉冲串起始定时的系统包括被配置为接收信号的逻辑，产生相关模数并基于相关模量生成第一定时输出。 逻辑还可以被配置为接收操作模式信息和定时信息并产生搜索控制。 逻辑还可以被配置为使用搜索控件来识别最大相关模数，并且确定与最大相关模数相关联的第二定时输出。 第二定时输出表示比第一定时输出更突出的开始时间的近似值。

公开(公告)号：US20080279322A1

公开(公告)日：2008-11-13

申请号：US12069022

申请日：2008-02-05

申请人： Bogdan Franovici ,  Emmanuel Lemois

发明人： Bogdan Franovici ,  Emmanuel Lemois

IPC分类号： H04L7/00

CPC分类号： H04L27/2665 ,  H04B17/20 ,  H04L25/0208 ,  H04L25/0212 ,  H04L25/0224 ,  H04L27/2663 ,  H04L27/2675 ,  H04L27/2695

摘要： An embodiment of a device for processing at least an incoming signal in a wireless communication system, said incoming signal being sent by a base station and comprising successive frames, each of which comprising at least a training symbol correlated to said base station, and a data symbol carrying message data.The device comprises at least: a first module digitizing and sampling the incoming signal; a second module demodulating said digitized and sampled incoming signal, and generating a corresponding frequency domain symbol; a timing synchronization and scanning module suitable for detecting at least a time offset of said training symbol by using said corresponding frequency domain symbol; and a timing post processing module for processing said timing offset and for generating an improved timing offset used to start the sampling of following incoming signal.

摘要翻译： 一种用于在无线通信系统中处理至少输入信号的设备的实施例，所述输入信号由基站发送并且包括连续的帧，每个帧至少包括与所述基站相关的训练符号，以及数据 符号携带消息数据。 所述装置至少包括：对所述输入信号进行数字化和采样的第一模块; 第二模块，对所述数字化和采样的输入信号进行解调，并产生对应的频域符号; 定时同步和扫描模块，适于通过使用所述对应的频域符号来检测所述训练符号的至少一个时间偏移; 以及定时后处理模块，用于处理所述定时偏移并且用于产生用于开始对后续输入信号的采样的改进的定时偏移。

公开(公告)号：US08451958B2

公开(公告)日：2013-05-28

申请号：US13098103

申请日：2011-04-29

申请人： Joseph Boutros ,  Emmanuel Lemois

发明人： Joseph Boutros ,  Emmanuel Lemois

IPC分类号： H04B1/707 ,  H04B3/00

CPC分类号： H04L7/0054 ,  H04J3/0682 ,  H04L7/041 ,  H04L7/08 ,  H04N7/173 ,  H04N21/4622 ,  H04N21/4782 ,  H04N21/4786 ,  H04N21/4788 ,  H04N21/6118 ,  H04N21/6168

摘要： A system for determining the burst start timing of a signal includes logic configured to receive the signal, generate correlation moduli and generate a first timing output based on the correlation moduli. The logic may also be configured to receive operating mode information and timing information and generate search controls. The logic may further be configured to identify a maximum of the correlation moduli using the search controls and determine a second timing output associated with the maximum correlation modulus. The second timing output represents a more accurate approximation of a burst start time than the first timing output.

摘要翻译： 用于确定信号的脉冲串起始定时的系统包括被配置为接收信号的逻辑，产生相关模数并基于相关模量生成第一定时输出。 逻辑还可以被配置为接收操作模式信息和定时信息并产生搜索控制。 逻辑还可以被配置为使用搜索控件来识别最大相关模数，并且确定与最大相关模数相关联的第二定时输出。 第二定时输出表示比第一定时输出更突出的开始时间的近似值。

公开(公告)号：US20110206172A1

公开(公告)日：2011-08-25

申请号：US13098103

申请日：2011-04-29

申请人： Joseph BOUTROS ,  Emmanuel Lemois

发明人： Joseph BOUTROS ,  Emmanuel Lemois

IPC分类号： H04L7/00

CPC分类号： H04L7/0054 ,  H04J3/0682 ,  H04L7/041 ,  H04L7/08 ,  H04N7/173 ,  H04N21/4622 ,  H04N21/4782 ,  H04N21/4786 ,  H04N21/4788 ,  H04N21/6118 ,  H04N21/6168

摘要： A system for determining the burst start timing of a signal includes logic configured to receive the signal, generate correlation moduli and generate a first timing output based on the correlation moduli. The logic may also be configured to receive operating mode information and timing information and generate search controls. The logic may further be configured to identify a maximum of the correlation moduli using the search controls and determine a second timing output associated with the maximum correlation modulus. The second timing output represents a more accurate approximation of a burst start time than the first timing output.

摘要翻译： 用于确定信号的脉冲串起始定时的系统包括被配置为接收信号的逻辑，产生相关模数并基于相关模量生成第一定时输出。 逻辑还可以被配置为接收操作模式信息和定时信息并产生搜索控制。 逻辑还可以被配置为使用搜索控件来识别最大相关模数，并且确定与最大相关模数相关联的第二定时输出。 第二定时输出表示比第一定时输出更突出的开始时间的近似值。