公开(公告)号：WO2002098095A1

公开(公告)日：2002-12-05

申请号：PCT/FR2002/001639

申请日：2002-05-15

Applicant: WAVECOM ,  ALARD, Michel ,  ROUXEL, Alexandre ,  GOUDARD, Nathalie ,  BIETRIX, Franck

Inventor： ALARD, Michel ,  ROUXEL, Alexandre ,  GOUDARD, Nathalie ,  BIETRIX, Franck

IPC: H04L27/26

CPC classification number: H04L25/0232 ,  H04L25/0248 ,  H04L27/2647

Abstract: Procédé d'estimation de la fonction de transfert d'un canal de transmission d'un signal multiporteuse, procédé de réception d'un signal numérique, et récepteur d'un signal multiporteuse correspondants. L'invention concerne un procédé d'estimation de la fonction de transfert d'un canal (42) de transmission d'un signal multiporteuse formé d'une succession temporelle de symboles constitués d'un ensemble d'éléments de données, chacun des éléments de données modulant une fréquence porteuse du signal, les éléments de données comprenant d'une part des pilotes, et d'autre part des éléments de données dits informatifs. Selon l'invention, un tel procédé comprend :- une étape de détermination d'un jeu de séquences sphéroïdales aplaties discrètes (SSAD) bidimensionnelles ;- une étape d'écriture (53) de la fonction de transfert sous la forme d'une combinaison d'au moins certaines des séquences sphéroïdales aplaties discrètes SSAD bidimensionnelles;- une étape d'interpolation (54) bidimensionnelle en temps et en fréquence d'au moins certains coefficients de la combinaison, de manière à obtenir une estimation de la fonction de transfert en tout point d'un réseau temps-fréquence.

Abstract translation: 本发明涉及一种用于估计多载波信号传输信道（42）的传递函数的方法，该多载波信号传输信道（42）由一组数据元素的时间序列符号组成，每个数据元素调制信号的载波频率，数据元素包括 飞行员和所谓的信息数据元素。 本发明的特征在于所述方法包括：确定一组二维离散长椭球序列（DPSS）的步骤。 包括以至少一些二维离散长椭球序列（DPSS）的组合的形式书写（53）传递函数的步骤; 包括组合的至少一些系数的基于时间和频率的二维内插（54）的步骤，以便获得在时间 - 频率网络的任何点处的传递函数的估计。

公开(公告)号：WO2002065685A1

公开(公告)日：2002-08-22

申请号：PCT/FR2002/000486

申请日：2002-02-07

Applicant: WAVECOM ,  ALARD, Michel ,  GOUDARD, Nathalie

Inventor： ALARD, Michel ,  GOUDARD, Nathalie

IPC: H04L1/00

CPC classification number: H04L1/0007

Abstract: L'invention concerne un procédé d'extraction d'une séquence de symboles pilotes permettant notamment d'estimer la fonction de transfert d'un canal de transmission, au moins un dispositif de radiocommunication communiquant par ledit canal avec une station distante, cette dernière délivrant régulièrement audit dispositif de radiocommunication un motif de référence.Selon l'invention, la structure dudit motif de référence est variable, en fonction d'au moins une caractéristique dudit canal de transmission.

Abstract translation: 本发明涉及一种用于提取能够估计传输信道的传输功能的导频符号序列的方法，至少一个通过所述信道与远程站进行通信的无线电通信装置，后者定期向所述无线电通信装置传送参考模式。 本发明的特征在于，所述参考图案的结构是可变的，这取决于所述传输通道的至少一个特性。

公开(公告)号：EP1391095B1

公开(公告)日：2004-09-29

申请号：EP02740790.7

申请日：2002-05-15

Applicant: Wavecom

Inventor： ALARD, Michel ,  ROUXEL, Alexandre ,  GOUDARD, Nathalie ,  BIETRIX, Franck

IPC: H04L27/26 ,  H04L25/02

CPC classification number: H04L25/0232 ,  H04L25/0248 ,  H04L27/2647

公开(公告)号：EP1319293B1

公开(公告)日：2010-02-24

申请号：EP01972178.6

申请日：2001-09-20

Applicant: FRANCE TELECOM ,  TDF ,  Wavecom

Inventor： LACROIX-PENTHER, Dominique ,  COMBELLES, Pierre ,  ALARD, Michel

IPC: H04L27/26

CPC classification number: H04L27/2613 ,  H04L27/2698

公开(公告)号：EP1044511B1

公开(公告)日：2003-05-07

申请号：EP98964550.2

申请日：1998-12-29

Applicant: Wavecom

Inventor： ALARD, Michel

IPC: H04B1/38 ,  H01Q1/24

CPC classification number: H01Q1/24 ,  H04B1/3833

Abstract: The invention concerns a mobile radio communication device, comprising an antenna (11) mounted mobile on said radio communication device case unit (12) such that it can be optimally or quasi-optimally oriented, relative to a signal transmission axis, whether the user is right-handed or left-handed. Advantageously, said antenna (11) is a planar antenna co-operating with symmetrical reversible locking means capable of taking up two fixed positions: a first position for use by a right-handed person; a second position for use by a left-handed person.

公开(公告)号：EP1391095A1

公开(公告)日：2004-02-25

申请号：EP02740790.7

申请日：2002-05-15

Applicant: Wavecom

Inventor： ALARD, Michel ,  ROUXEL, Alexandre ,  GOUDARD, Nathalie ,  BIETRIX, Franck

IPC: H04L27/26 ,  H04L25/02

CPC classification number: H04L25/0232 ,  H04L25/0248 ,  H04L27/2647

Abstract: The invention concerns a method for estimating the transfer function of a multicarrier signal transmission channel (42) consisting of a temporal succession of symbols of a set of data elements, each of the data elements modulating a carrier frequency of the signal, the data elements comprising pilots and so-called informative data elements. The invention is characterised in that said method comprises: a step which consists in determining a set of two-dimensional discrete prolate spheroidal sequences (DPSS); a step which consists in writing (53) the transfer function in the form of a combination of at least some of the two-dimensional discrete prolate spheroidal sequences (DPSS); a step which consists in time-based and frequency-based two-dimensional interpolation (54) of at least some of the coefficients of the combination, so as to obtain an estimation of the transfer function at any point of a time-frequency network.

Abstract translation: 本发明涉及一种用于估计多载波信号传输信道（42）的传递函数的方法，该信道传输信道由一组数据元素的时间序列符号组成，每个数据元素调制信号的载波频率，数据元素包括 飞行员和所谓的信息数据元素。 本发明的特征在于所述方法包括：确定一组二维离散长椭球体序列（DPSS）的步骤; 包括以至少一些二维离散长椭球形序列（DPSS）的组合的形式书写（53）传递函数的步骤; 包括组合的至少一些系数的基于时间和基于频率的二维内插（54）的步骤，以获得在时频网络的任何点处的传递函数的估计。

公开(公告)号：EP1044511A1

公开(公告)日：2000-10-18

申请号：EP98964550.2

申请日：1998-12-29

Applicant: Wavecom

Inventor： ALARD, Michel

IPC: H04B1/38 ,  H01Q1/24

CPC classification number: H01Q1/24 ,  H04B1/3833

Abstract: The invention concerns a mobile radio communication device, comprising an antenna (11) mounted mobile on said radio communication device case unit (12) such that it can be optimally or quasi-optimally oriented, relative to a signal transmission axis, whether the user is right-handed or left-handed. Advantageously, said antenna (11) is a planar antenna co-operating with symmetrical reversible locking means capable of taking up two fixed positions: a first position for use by a right-handed person; a second position for use by a left-handed person.

公开(公告)号：EP1358728A1

公开(公告)日：2003-11-05

申请号：EP02702465.2

申请日：2002-02-07

Applicant: Wavecom

Inventor： ALARD, Michel ,  GOUDARD, Nathalie

IPC: H04L1/00 ,  H04L27/26

CPC classification number: H04L1/0007

Abstract: The invention concerns a method for extracting a sequence of pilot symbols enabling to estimate the transfer function of a transmission channel, at least a radiocommunication device communicating through said channel with a remote station, the latter regularly delivering to said radiocommunication device a reference pattern. The invention is characterised in that the structure of said reference pattern is variable, depending on at least one characteristic of said transmission channel.

公开(公告)号：EP1319293A1

公开(公告)日：2003-06-18

申请号：EP01972178.6

申请日：2001-09-20

Applicant: FRANCE TELECOM ,  TELEDIFFUSION DE FRANCE SA ,  Wavecom

Inventor： LACROIX-PENTHER, Dominique ,  COMBELLES, Pierre ,  ALARD, Michel

IPC: H04L27/26

CPC classification number: H04L27/2613 ,  H04L27/2698

Abstract: The invention concerns a multicarrier signal consisting of a temporal succession of symbols formed by a set of data elements, each of said data elements modulating a carrier frequency of said signal, the data elements comprising reference elements called pilots (20) whereof the value in transmission is known to at least one receiver designed to receive said signal and informative data elements (21-28), whereof the value in transmission is not known a priori to the or said receiver(s), one of said carrier frequencies modulated, at a given time, by one of said data elements, being called carrier. The invention is characterised in that it at least one constraint is imposed on the value of at least one of said informative data elements, so as to reduce, in reception, at least one term of interference affecting at least one of said pilots.