公开(公告)号：US08488718B2

公开(公告)日：2013-07-16

申请号：US12196507

申请日：2008-08-22

申请人： Philippe Mege ,  Christophe Brutel ,  Pierre-Yves Le Gal

发明人： Philippe Mege ,  Christophe Brutel ,  Pierre-Yves Le Gal

IPC分类号： H04L25/49 ,  H04L27/20

CPC分类号： H04L27/364

摘要： An emission chain, comprising a processing pathway for an input signal which includes a digital signal decomposition according to N signal components, with N an integer greater than or equal to 2. The N signal components being converted from a digital form into an analog form and following distinct physical pathways that induce first respective delays on the N signal components. A delayed input signal is obtained by applying a second delay (τ) having a value greater than or equal to the maximum value of the first delays. Next, N correction delays (τ−τi) are applied respectively to the N signal components based on a comparison between said input signal delayed by the second delay and the signal to be emitted. Finally, the signal to be provided to a power amplifier is obtained by combining the N signal components obtained on completion of the previous step.

摘要翻译： 一种发射链，包括用于输入信号的处理路径，其包括根据N个信号分量的数字信号分解，N是大于或等于2的整数.N个信号分量从数字形式转换为模拟形式， 遵循在N个信号分量上引起第一相应延迟的不同物理途径。 通过施加具有大于或等于第一延迟的最大值的值的第二延迟（τ）来获得延迟的输入信号。 接下来，基于延迟了第二延迟的所述输入信号与要发射的信号之间的比较，分别对N个信号分量施加N个校正延迟（τ-τi）。 最后，通过组合在前一步骤完成时获得的N个信号分量来获得要提供给功率放大器的信号。

公开(公告)号：US20090074105A1

公开(公告)日：2009-03-19

申请号：US12196507

申请日：2008-08-22

申请人： PHILIPPE MEGE ,  Christophe Brutel ,  Pierre-Yves Le Gal

发明人： PHILIPPE MEGE ,  Christophe Brutel ,  Pierre-Yves Le Gal

IPC分类号： H04L25/49

CPC分类号： H04L27/364

摘要： An emission chain is suitable for receiving an input signal and for providing a signal to be emitted. It comprises a processing pathway for the input signal which includes a digital signal decomposition according to N signal components, with N an integer greater than or equal to 2, said N signal components, on the one hand, being converted from a digital form into an analog form and, on the other hand, following respectively distinct physical pathways, said physical pathways inducing first respective delays on the N signal components. The input chain comprises a power amplifier.A delayed input signal is obtained by applying a second delay (τ) having a value greater than or equal to the maximum value of the first delays. Next, N correction delays (τ−τi) are applied respectively to the N signal components, this step being carried out on the basis of a comparison between said input signal delayed by the second delay and the signal to be emitted. Finally, the signal to be provided to the power amplifier is obtained by combining the N signal components obtained on completion of the previous step.

摘要翻译： 发射链适用于接收输入信号并提供要发射的信号。 它包括用于输入信号的处理路径，其包括根据N个信号分量的数字信号分解，N是大于或等于2的整数，所述N个信号分量一方面从数字形式转换为 另一方面，分别具有不同的物理途径，所述物理路径在N个信号分量上引起第一相应的延迟。 输入链包括功率放大器。 通过施加具有大于或等于第一延迟的最大值的值的第二延迟（τ）来获得延迟的输入信号。 接下来，分别对N个信号分量施加N个校正延迟（tau-taui），该步骤是基于延迟了第二延迟的所述输入信号与要发射的信号之间的比较来执行的。 最后，通过组合在前一步骤完成时获得的N个信号分量来获得要提供给功率放大器的信号。

公开(公告)号：US07310378B2

公开(公告)日：2007-12-18

申请号：US10493324

申请日：2002-10-18

申请人： Philippe Mege ,  Christophe Brutel

发明人： Philippe Mege ,  Christophe Brutel

IPC分类号： H04J11/00 ,  H04N11/02

CPC分类号： H04L25/0232 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/025 ,  H04L27/2647 ,  H04L27/2698

摘要： A method for estimating a transmission channel from a multicarrier signal transmitted through said transmission channel, comprising real pilot symbols and so-called pure imaginary pilot symbols, consists in selecting one or several values zk of the received signal corresponding respectively to one or several real pilot symbols, and one or several values zl of the received signal corresponding respectively to one or several pure imaginary pilot symbols. The pilot symbols are sufficiently close both in frequency and in time such that it can be assumed that the fading of the signal through the transmission channel has a complex value α substantially identical for the symbols. An estimated value {circumflex over (α)} of α for the pilot symbols concerned is then determined by minimizing a least square equation involving the values zk and the values zl.

摘要翻译： 一种用于从包括实际导频符号和所谓的纯虚拟导频符号的所述传输信道发射的多载波信号估计传输信道的方法在于选择接收信号的一个或多个值z k 分别对应于一个或几个实际导频符号，以及分别对应于一个或几个纯虚拟导频符号的接收信号的一个或几个值z 1。 导频符号在频率和时间上均足够接近，使得可以假设通过传输信道的信号的衰落具有对于符号实质上相同的复数值α。 然后，通过使涉及值z z和z z的值的最小二乘方最小化来确定相关导频符号的α的估计值（对于（α）}） 。

公开(公告)号：US08031788B2

公开(公告)日：2011-10-04

申请号：US12088525

申请日：2006-10-05

申请人： Philippe Mege ,  Christophe Brutel

发明人： Philippe Mege ,  Christophe Brutel

IPC分类号： H04L23/02 ,  H04L27/28

CPC分类号： H04B7/0848 ,  H04L25/0232 ,  H04L27/2647 ,  H04L27/2698

摘要： A signal is received by P antennas. It includes frames having symbols occupying respective positions distributed along an axis of time and of frequency, a frame including M blocks having N reference symbols M groups of P weighting coefficients are determined, each one of the groups relating to one of the blocks emitted, with the coefficients of a group being associated to the blocks which are received on the P antennas and which correspond to the block emitted relating to the group. The coefficients are determined so as to increase via a threshold value, an error value for each block emitted, between the reference symbols of the block emitted, and the symbols obtained using the symbols received on each antenna at the positions of reference symbols corresponding to the block emitted and the associated coefficients. Then, weighting coefficients are obtained for the other symbols of the frame Finally, a composite signal is generated by summing up the symbols received respectively weighted by the associated weighting coefficients.

摘要翻译： P天线接收信号。 它包括具有占据沿着时间和频率轴分布的相应位置的符号的帧，确定包括具有N个参考符号M个P个加权系数的M个块的帧，每个组与所发射的块中的一个相关， 一组的系数与在P个天线上接收并对应于与组相关的块发送的块相关联。 确定系数以便通过阈值增加发射的块的参考符号之间的每个块的误差值，以及使用在每个天线上接收到的符号获得的符号在对应于 块发射和相关系数。 然后，对于帧的其他符号获得加权系数。最后，通过对由相关联的加权系数分别加权的符号进行求和来生成复合信号。

公开(公告)号：US20080247482A1

公开(公告)日：2008-10-09

申请号：US12088525

申请日：2006-10-05

申请人： Philippe Mege ,  Christophe Brutel

发明人： Philippe Mege ,  Christophe Brutel

IPC分类号： H04L23/02 ,  H04L27/28

CPC分类号： H04B7/0848 ,  H04L25/0232 ,  H04L27/2647 ,  H04L27/2698

摘要： A signal is received by P antennas. It includes frames having symbols occupying respective positions distributed along an axis of time and of frequency, a frame including M blocks having N reference symbols M groups of P weighting coefficients are determined, each one of the groups relating to one of the blocks emitted, with the coefficients of a group being associated to the blocks which are received on the P antennas and which correspond to the block emitted relating to the group. The coefficients are determined so as to increase via a threshold value, an error value for each block emitted, between the reference symbols of the block emitted, and the symbols obtained using the symbols received on each antenna at the positions of reference symbols corresponding to the block emitted and the associated coefficients. Then, weighting coefficients are obtained for the other symbols of the frame Finally, a composite signal is generated by summing up the symbols received respectively weighted by the associated weighting coefficients.

摘要翻译： P天线接收信号。 它包括具有占据沿着时间和频率轴分布的相应位置的符号的帧，确定包括具有N个参考符号M个P个加权系数的M个块的帧，每个组与所发射的块中的一个相关， 一组的系数与在P个天线上接收并对应于与组相关的块发送的块相关联。 确定系数以便通过阈值增加发射的块的参考符号之间的每个块的误差值，以及使用在每个天线上接收到的符号获得的符号在对应于 块发射和相关系数。 然后，对于帧的其他符号获得加权系数。最后，通过对由相关联的加权系数分别加权的符号进行求和来生成复合信号。

公开(公告)号：US08040967B2

公开(公告)日：2011-10-18

申请号：US12089073

申请日：2006-10-05

申请人： Philippe Mege ,  Christophe Brutel

发明人： Philippe Mege ,  Christophe Brutel

IPC分类号： H04L5/12 ,  H04L23/02

CPC分类号： H04B17/336 ,  H04B7/08 ,  H04L27/2698

摘要： A signal is received in a telecommunication network in the form of P signals received on P corresponding antennas, where P is greater than or equal to 1. The received signals correspond to a multi-carrier signal transmitted in the form of flames comprising symbols occupying corresponding positions distributed along a time axis and along a frequency axis; a frame comprising M blocks each having at least N reference symbols. The reference symbols in each of the blocks satisfy a first maximum spacing between each other along the time axis and a second maximum spacing between each other along the frequency axis, less than a first value and a second value respectively, M being an integer number equal to at least two. M estimated noise power values are determined at frame level, each related to one of the M emitted reference symbol blocks. Values of the estimated noise power for the other symbols in the frame are then obtained from the determined estimated noise power values.

摘要翻译： 在电信网络中以P对应天线接收的P信号的形式接收信号，其中P大于或等于1.接收的信号对应于以包含符号的符号的火焰形式发送的多载波信号 沿着时间轴和频率轴分布的位置; 包括每个具有至少N个参考符号的M个块的帧。 每个块中的参考符号沿着时间轴相互满足彼此之间的第一最大间隔，并且沿着频率轴彼此之间的第二最大间隔分别小于第一值和第二值，M是整数等于 至少两个。 在帧级确定M个估计噪声功率值，每个与M个发射的参考符号块之一相关。 然后从所确定的估计噪声功率值获得帧中其他符号的估计噪声功率的值。

公开(公告)号：US07974592B2

公开(公告)日：2011-07-05

申请号：US12150251

申请日：2008-04-25

申请人： Philippe Mege ,  Pierre-Yves Le Gal ,  Christophe Brutel

发明人： Philippe Mege ,  Pierre-Yves Le Gal ,  Christophe Brutel

IPC分类号： H04B1/04

CPC分类号： H03F1/3247 ,  H03F1/34 ,  H03F3/24 ,  H03F2200/451 ,  H04B2001/0433

摘要： A transmission chain comprises a power amplifier adapted for receiving as input a signal to be amplified Sw(t) and for providing as output an amplified signal Dw(t); a predistortion module comprising a linearization unit adapted for applying a predistortion coefficient W(t) to an input signal S(t), and a unit for determining said predistortion coefficient. The input signal S(t) is received and the amplified signal Dw(t) is received through a return pathway, at the level of the unit for determining the predistortion coefficient, and the predistortion coefficient is determined on the basis of a comparison between the input signal and the amplified signal. Next, at the level of the linearization unit, the predistortion coefficient is applied to the input signal to provide as output the signal to be amplified. The determining unit determines the predistortion coefficient on the basis of a first-order approximation of the input signal.

摘要翻译： 传输链包括功率放大器，用于接收要被放大的信号Sw（t）作为输入，并且用于提供放大信号Dw（t）作为输出。 预失真模块，包括适于将预失真系数W（t）应用于输入信号S（t）的线性化单元和用于确定所述预失真系数的单元。 输入信号S（t）被接收，并且放大信号Dw（t）通过返回路径在用于确定预失真系数的单元的电平处被接收，并且预失真系数基于 输入信号和放大信号。 接下来，在线性化单元的电平处，将预失真系数施加到输入信号，以提供要放大的信号作为输出。 确定单元基于输入信号的一阶近似来确定预失真系数。

公开(公告)号：US20090122900A1

公开(公告)日：2009-05-14

申请号：US12089073

申请日：2006-10-05

申请人： Philippe Mege ,  Christophe Brutel

发明人： Philippe Mege ,  Christophe Brutel

IPC分类号： H04L1/02 ,  H03D1/04

CPC分类号： H04B17/336 ,  H04B7/08 ,  H04L27/2698

摘要： A signal is received in a telecommunication network in the form of P signals received on P corresponding antennas, where P is greater than or equal to 1. The received signals correspond to a multi-carrier signal transmitted in the form of frames comprising symbols occupying corresponding positions distributed along a time axis and along a frequency axis; a frame comprising M blocks each having at least N reference symbols. The reference symbols in each of the blocks satisfy a first maximum spacing between each other along the time axis and a second maximum spacing between each other along the frequency axis, less than a first value and a second value respectively, M being an integer number equal to at least two. M estimated noise power values are determined at frame level, each related to one of the M emitted reference symbol blocks. Values of the estimated noise power for the other symbols in the frame are then obtained from the determined estimated noise power values.

摘要翻译： 在电信网络中以P对应的天线上接收的P信号的形式接收信号，其中P大于或等于1.接收的信号对应于以帧的形式发送的多载波信号，包括占用相应的符号的符号 沿着时间轴和频率轴分布的位置; 包括每个具有至少N个参考符号的M个块的帧。 每个块中的参考符号沿着时间轴相互满足彼此之间的第一最大间隔，并且沿着频率轴彼此之间的第二最大间隔分别小于第一值和第二值，M是整数等于 至少两个。 在帧级确定M个估计噪声功率值，每个与M个发射的参考符号块之一相关。 然后从所确定的估计噪声功率值获得帧中其他符号的估计噪声功率的值。

公开(公告)号：US07471728B2

公开(公告)日：2008-12-30

申请号：US10489532

申请日：2002-08-09

申请人： Christophe Brutel ,  Philippe Mege

发明人： Christophe Brutel ,  Philippe Mege

IPC分类号： H04L27/28

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L25/0214 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/2647

摘要： The invention provides a multicarrier system constructed on a time-frequency lattice defined comprising frames having MxN symbols distributed over M subcarriers each of which is divided into N specific symbol times. Each frame comprises P pilot symbols distributed time-wise and frequency-wise so as to cover the frame in a meshed structure, so that, in particular, some at least of the M subcarriers contain no pilot symbol and/or that no pilot symbol should be transmitted to some at least of the N symbol times. The invention also relates to a method for tracking a transmission channel using such a signal, and a device for implementing the method.

摘要翻译： 本发明提供了一种构造在时频网格上的多载波系统，该多载波系统包括分布在M个子载波上的具有M×N个符号的帧，每个子载波被分成N个特定符号时间。 每个帧包括以时间和频率分布的P个导频符号，以便以网格结构覆盖该帧，使得特别地，一些至少M个子载波中不包含导频符号和/或不导频符号 至少传送至N个符号时间。 本发明还涉及使用这种信号跟踪传输信道的方法，以及用于实现该方法的设备。

公开(公告)号：US20080268794A1

公开(公告)日：2008-10-30

申请号：US12150251

申请日：2008-04-25

申请人： Philippe Mege ,  Pierre-Yves Le Gal ,  Christophe Brutel

发明人： Philippe Mege ,  Pierre-Yves Le Gal ,  Christophe Brutel

IPC分类号： H04B1/04

CPC分类号： H03F1/3247 ,  H03F1/34 ,  H03F3/24 ,  H03F2200/451 ,  H04B2001/0433

摘要： A transmission chain comprises a power amplifier adapted for receiving as input a signal to be amplified Sw(t) and for providing as output an amplified signal Dw(t); a predistortion module comprising, on the one hand, a linearization unit adapted for applying a predistortion coefficient W(t) to an input signal S(t), and, on the other hand, a unit for determining said predistortion coefficient.On the one hand, the input signal S(t) is received and, on the other hand, the amplified signal Dw(t) is received through a return pathway, at the level of the unit for determining the predistortion coefficient, and the predistortion coefficient is determined on the basis of a comparison between the input signal and the amplified signal. Next, at the level of the linearization unit, the predistortion coefficient is applied to the input signal, so as to provide as output the signal to be amplified. The determining unit determines the predistortion coefficient on the basis of a first-order approximation of the input signal.

摘要翻译： 传输链包括功率放大器，其适于作为输入接收要被放大的信号W（t），并且用于提供放大信号D（w）作为输出。 一种预失真模块，其一方面包括适用于将预失真系数W（t）应用于输入信号S（t）的线性化单元，另一方面，包括用于确定所述预失真系数的单元。 一方面，接收输入信号S（t），另一方面，通过返回路径接收放大信号D（w），在该单位的电平处 确定预失真系数，并且基于输入信号和放大信号之间的比较来确定预失真系数。 接下来，在线性化单元的电平处，将预失真系数施加到输入信号，以便提供要被放大的信号作为输出。 确定单元基于输入信号的一阶近似来确定预失真系数。