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1. 发明授权

US06954496B2 Method for transmitting data from an interrogating device to portable objects 失效
标题翻译：用于将数据从询问装置传送到便携式对象的方法
公开(公告)号：US06954496B2
公开(公告)日：2005-10-11
申请号：US09926039
申请日：2000-12-19
申请人： Elisabeth Crochon , Thierry Thomas , Mathieu Bouvier Des Noes
发明人： Elisabeth Crochon , Thierry Thomas , Mathieu Bouvier Des Noes
IPC分类号： H04L27/02 , H04B1/59 , H04B7/26 , H04L25/34 , H04L25/49 , H03K7/04
CPC分类号： H04L25/4904
摘要： A method of information transmission from an interrogator system to portable objects. The information is transmitted through ternary amplitude modulation and positional pulse coding. A frame is made up of a Start Of Frame (SOF) marker made up of two like-polarity pulses, patterns that transmit binary symbols and are composed of two opposite-polarity pulses, and lastly an End Of Frame (EOF) marker that is made up only of a single pulse. The present invention is notably intended for interrogating radio frequency (RFID) tags.
摘要翻译：从询问器系统到便携式物体的信息传输方法。信息通过三次幅度调制和位置脉冲编码传输。帧由由两个相似极性脉冲组成的起始帧（SOF）标记组成，发送二进制符号并由两个相反极性脉冲组成的模式，最后是帧结束（EOF）标记，仅由单脉冲组成。本发明特别用于询问射频（RFID）标签。

2. 发明授权

US08155230B2 Method for the flexible demodulation of estimated complex symbols 有权
标题翻译：估计复合符号灵活解调的方法
公开(公告)号：US08155230B2
公开(公告)日：2012-04-10
申请号：US11817267
申请日：2005-03-08
申请人： Dimitri Ktenas , Mathieu Bouvier Des Noes , Julien Barletta , Claire Guyon
发明人： Dimitri Ktenas , Mathieu Bouvier Des Noes , Julien Barletta , Claire Guyon
IPC分类号： H04B7/02
CPC分类号： H04L25/067 , H04L5/026
摘要： A method for soft demapping of complex-valued symbols y(k) (k=1, 2, . . . , K) by calculation of a Logarithm of Likelihood Ratio (LogLR) such that: Log ⁢ ⁢ LR ⁡ ( b I , q ) = ln ⁢ ∑ λ ⁢ ∈ S l , q ( 1 ) ⁢ exp ( - 1 2 ⁢ β ⁢  y ~ ⁡ ( k ) - λ  2 ) ∑ λ ⁢ ∈ S q , l ( 0 ) ⁢ exp ( - 1 2 ⁢ β ⁢  y ~ ⁡ ( k ) - λ  2 ) wherein bI,q is the qth coded bit of an in-phase part of a transmitted signal, β is an asymptotic Signal-to-Interference-plus-Noise Ratio, {tilde over (y)}(k) is a standardized symbol associated with y(k), λ is a reference symbol of QAM constellation associated with a M-QAM modulation, S(1)I,q and S(0)I,q are complex plane partitions that bring together, respectively, all reference symbols λ having a “1” at the position (I, q) and all reference symbols λ having a “0” at the position (I, q), a formula similar to LogLR being given for the bit bQ,p, pth coded bit of a quadrature part of the transmitted signal. The method applies to code division multiple access transmission systems.
摘要翻译：一种通过计算似然比对数（LogLR）对复值符号y（k）（k = 1,2，...，K）进行软解映射的方法，使得：Log≠LR⁡（b I，（1）exp（ - 1 2＆bgr;y⁡（k） - λ2）Σλ∈S q，l（0） exp（ - 1 2＆bgr;y⁡（k） - λ2）其中bI，q是发送信号的同相部分的第q个编码比特，＆bgr; 是渐近的信号与干扰加噪声比，（y）}（k）是与y（k）相关联的标准符号，λ是与M-QAM调制相关联的QAM星座的参考符号，S（1）I，q和S（0）I，q分别是在位置（I，q）处分别具有“1”的所有参考符号λ并且所有参考符号λ具有在位置（I，q）处为“0”，对于发送信号的正交部分的位bQ，p，pth编码比特，给出了类似于LogLR的公式。该方法适用于码分多址传输系统。

3. 再颁专利

USRE43204E1 Data transmission process with auto-synchronized correcting code, auto-synchronized coder and decoder, corresponding to transmitter and receiver 有权
标题翻译：数据传输过程具有自动同步校正码，自动同步编码器和解码器，对应的发射器和接收器
公开(公告)号：USRE43204E1
公开(公告)日：2012-02-21
申请号：US12558250
申请日：2009-09-11
申请人： Marc Laugeois , Didier Lattard , Jene-Remi Savel , Mathieu Bouvier Des Noes
发明人： Marc Laugeois , Didier Lattard , Jene-Remi Savel , Mathieu Bouvier Des Noes
IPC分类号： H04L7/00
CPC分类号： H04L7/048 , H04L1/0041 , H04L1/0045 , H04L1/0057 , H04L7/041
摘要： A data transmission process with auto-synchronised correcting code, auto-synchronised coder and decoder, corresponding transmitter and receiver.According to the invention, synchronisation management signals (HS, SS, ID) are formed and, under the control of these signals, a header is inserted before a data group and after it a correcting code. At receive end, these synchronisation management signals are reconstituted, the presence of a header is detected and any erroneous symbols are corrected.The invention also provides for an auto-synchronised coder and a decoder and for a transmitter and a receiver using them.
摘要翻译：具有自动同步校正码的数据传输过程，自动同步编码器和解码器，对应的发射器和接收器。根据本发明，形成同步管理信号（HS，SS，ID），并且在这些信号的控制下，在数据组之前和之后插入一个标题。在接收端，这些同步管理信号被重构，检测到报头的存在，并纠正任何错误的符号。本发明还提供了自动同步编码器和解码器以及使用它们的发射机和接收机。

4. 发明申请

US20080291888A1 Method and Device for Carrying Out Flexible Demodulation in an Ofdm-Cdma System 有权
标题翻译：用于在ordm-Cdma系统中进行柔性解调的方法和装置
公开(公告)号：US20080291888A1
公开(公告)日：2008-11-27
申请号：US12093925
申请日：2006-11-14
申请人： Luc Maret , Dimitri Ktenas , Mathieu Bouvier Des Noes , Chiara Martinelli-Cattaneo
发明人： Luc Maret , Dimitri Ktenas , Mathieu Bouvier Des Noes , Chiara Martinelli-Cattaneo
IPC分类号： H04J13/04
CPC分类号： H04L5/0016 , H04L25/067 , H04L27/38
摘要： This method for carrying out the flexible demodulation of data modulated following an amplitude modulation in quadrature is used in a communications system employing a code division multiple access technique (CDMA) and an optical frequency division multiplexing (OFDM) using non-binary spread codes. The invention includes steps for determining a simplified expression specific to the logarithm of the likelihood ratio.
摘要翻译：在采用码分多址技术（CDMA）和使用非二进制扩展码的光分频复用（OFDM）的通信系统中，使用用于在正交幅度调制之后进行数据调制的灵活解调的方法。本发明包括用于确定特定于似然比的对数的简化表达式的步骤。

5. 发明授权

US06335947B1 Process for the processing of an information transmission signal by spread spectrum and the corresponding receiver 有权
标题翻译：通过扩展频谱处理信息传输信号的过程和相应的接收机
公开(公告)号：US06335947B1
公开(公告)日：2002-01-01
申请号：US09166543
申请日：1998-10-05
申请人： Didier Lattard , Christophe Boulanger , Didier Varreau , Mathieu Bouvier Des Noes
发明人： Didier Lattard , Christophe Boulanger , Didier Varreau , Mathieu Bouvier Des Noes
IPC分类号： H04B1500
CPC分类号： H04B1/711 , H04J13/0022
摘要： A method for processing a direct sequence spread spectrum signal, and a receiver for performing the method. A correlation is preformed between a received signal and the direct sequence used to determine peaks of different amplitudes. The spectrum of the information corresponding to the highest amplitude peak is respread using the direct sequence. The respread signal is subtracted from the received signal to create a new signal. This process is reiterated on the new signal until all of the peaks have been exhausted.
摘要翻译：一种用于处理直接序列扩频信号的方法，以及用于执行该方法的接收机。在接收信号和用于确定不同幅度的峰值的直接序列之间进行相关。使用直接序列重新对应于最高幅度峰值的信息的频谱。从接收到的信号中减去再生信号以产生新的信号。在新信号上重申这一过程，直到所有的峰值都被耗尽为止。

6. 发明授权

US07974357B2 Method and device for carrying out flexible demodulation in an OFDM-CDMA system 有权
标题翻译：用于在OFDM-CDMA系统中进行灵活解调的方法和装置
公开(公告)号：US07974357B2
公开(公告)日：2011-07-05
申请号：US12093925
申请日：2006-11-14
申请人： Luc Maret , Dimitri Ktenas , Mathieu Bouvier Des Noes , Chiara Martinelli-Cattaneo
发明人： Luc Maret , Dimitri Ktenas , Mathieu Bouvier Des Noes , Chiara Martinelli-Cattaneo
IPC分类号： H04L5/12 , H04L27/06
CPC分类号： H04L5/0016 , H04L25/067 , H04L27/38
摘要： This method for carrying out the flexible demodulation of data modulated following an amplitude modulation in quadrature is used in a communications system employing a code division multiple access technique (CDMA) and an optical frequency division multiplexing (OFDM) using non-binary spread codes. The invention includes steps for determining a simplified expression specific to the logarithm of the likelihood ratio.
摘要翻译：在采用码分多址技术（CDMA）和使用非二进制扩展码的光分频复用（OFDM）的通信系统中，使用用于在正交幅度调制之后进行数据调制的灵活解调的方法。本发明包括用于确定特定于似然比的对数的简化表达式的步骤。

7. 发明授权

US07738578B2 Method and device for selecting spreading parameters for an OFDM-CDMA system 有权
标题翻译：用于选择OFDM-CDMA系统的扩展参数的方法和装置
公开(公告)号：US07738578B2
公开(公告)日：2010-06-15
申请号：US11566900
申请日：2006-12-05
申请人： Dimitri Ktenas , Mathieu Bouvier Des Noes
发明人： Dimitri Ktenas , Mathieu Bouvier Des Noes
IPC分类号： H04K1/10
CPC分类号： H04L5/0016 , H04L5/0039 , H04L5/0062 , H04L25/0216 , H04L25/03159 , H04L27/2602 , H04L2025/03414
摘要： To select the frequency (SF) and/or time (ST) spreading parameters for a communication system using a quadrature amplitude modulation and implementing a CDMA technique and an OFDM multiplexing the attenuation coefficients of the propagation channel are estimated For all the F sub-bands of SF subcarriers and the T blocks of ST OFDM symbols, at least one asymptotic signal-to-interference+noise ratio (SINR) is determined, based on the attenuation coefficients of the propagation channel and the type of equalizer used by the receiver. From this, for each coded information block obtained from the modulation, the compressed asymptotic SINR is deduced, expressed by an analytical formula dependent on the frequency (SF) and time (ST) spreading parameters and the frequency (SF) and time (ST) spreading parameters which maximize the value of the compressed asymptotic SINR are selected.
摘要翻译：为了选择使用正交幅度调制和实现CDMA技术的通信系统的频率（SF）和/或时间（ST）扩展参数和OFDM复用，估计传播信道的衰减系数对于所有F子带的SF子载波和ST个OFDM符号的T个块，基于传播信道的衰减系数和接收机使用的均衡器的类型来确定至少一个渐近信号到干扰+噪声比（SINR）。由此，对于从调制获得的每个编码信息块，推导出由取决于频率（SF）和时间（ST）扩展参数和频率（SF）和时间（ST））的分析公式表示的压缩渐近SINR，选择使压缩渐近SINR的值最大化的扩展参数。

8. 发明申请

US20070177655A1 METHOD AND DEVICE FOR SELECTING SPREADING PARAMETERS FOR AN OFDM-CDMA SYSTEM 有权
标题翻译：用于选择用于OFDM-CDMA系统的扩展参数的方法和设备
公开(公告)号：US20070177655A1
公开(公告)日：2007-08-02
申请号：US11566900
申请日：2006-12-05
申请人： Dimitri Ktenas , Mathieu Bouvier Des Noes
发明人： Dimitri Ktenas , Mathieu Bouvier Des Noes
IPC分类号： H04B1/00 , H04K1/10
CPC分类号： H04L5/0016 , H04L5/0039 , H04L5/0062 , H04L25/0216 , H04L25/03159 , H04L27/2602 , H04L2025/03414
摘要： To select the frequency (SF) and/or time (ST) spreading parameters for a communication system using a quadrature amplitude modulation and implementing a CDMA technique and an OFDM multiplexing the attenuation coefficients of the propagation channel are estimated For all the F sub-bands of SF subcarriers and the T blocks of ST OFDM symbols, at least one asymptotic signal-to-interference+noise ratio (SINR) is determined, based on the attenuation coefficients of the propagation channel and the type of equalizer used by the receiver. From this, for each coded information block obtained from the modulation, the compressed asymptotic SINR is deduced, expressed by an analytical formula dependent on the frequency (SF) and time (ST) spreading parameters and the frequency (SF) and time (ST) spreading parameters which maximize the value of the compressed asymptotic SINR are selected.
摘要翻译：为了选择使用正交幅度调制并实现CDMA技术的通信系统和OFDM复用的频率（S SUB）和/或时间（S SUB T T）扩频参数估计传播信道的衰减系数对于S SUB子载波的所有F个子带和S T个OFDM符号的T个块，至少一个渐近信号 - 基于传播信道的衰减系数和接收机使用的均衡器的类型来确定干扰噪声比（SINR）。由此，对于从调制获得的每个编码信息块，推导出压缩渐近SINR，由取决于频率（S SUB）和时间（S SUB）的分析公式表示， SUB>）扩展参数和使压缩渐近SINR的值最大化的频率（S SUB）和扩展参数（S SUB T T）扩展参数。

9. 发明申请

US20080175339A1 Method for the Flexible Demodulation of Estimated Complex Symbols 有权
公开(公告)号：US20080175339A1
公开(公告)日：2008-07-24
申请号：US11817267
申请日：2005-03-08
申请人： Dimitri Ktenas , Mathieu Bouvier Des Noes , Julien Barletta , Claire Guyon
发明人： Dimitri Ktenas , Mathieu Bouvier Des Noes , Julien Barletta , Claire Guyon
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04L25/067 , H04L5/026
摘要： A method for soft demapping of complex-valued symbols y(k) (k=1, 2, . . . , K) by calculation of a Logarithm of Likelihood Ratio (LogLR) such that: Log   LR  ( b I , q ) = ln  ∑ λ  ∈ S l , q ( 1 )  exp ( - 1 2  β   y ~  ( k ) - λ  2 ) ∑ λ  ∈ S q , l ( 0 )  exp ( - 1 2  β   y ~  ( k ) - λ  2 ) wherein bI,q is the qth coded bit of an in-phase part of a transmitted signal, β is an asymptotic Signal-to-Interference-plus-Noise Ratio, {tilde over (y)}(k) is a standardized symbol associated with y(k), λ is a reference symbol of QAM constellation associated with a M-QAM modulation, S(1)I,q and S(0)I,q are complex plane partitions that bring together, respectively, all reference symbols λ having a “1” at the position (I, q) and all reference symbols λ having a “0” at the position (I, q), a formula similar to LogLR being given for the bit bQ,p, pth coded bit of a quadrature part of the transmitted signal. The method applies to code division multiple access transmission systems.

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