专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5329537A Method of maximum likelihood decoding with sub-sampled decoding trellis, and corresponding decoding device 失效
标题翻译：利用子采样解码网格的最大似然解码方法及相应的解码装置
公开(公告)号：US5329537A
公开(公告)日：1994-07-12
申请号：US7140
申请日：1993-01-21
申请人： Michel Alard , Damien Castelain , Jean-Francois Helard
发明人： Michel Alard , Damien Castelain , Jean-Francois Helard
IPC分类号： H03M13/41 , G06F11/10 , H03M13/12
CPC分类号： H03M13/41
摘要： Decoding apparatus provides the maximum likelihood decoding of a sequence of samples of the type implementing a Viterbi type of decision algorithm that defines an initial decoding trellis. Sub-sampling apparatus sub-samples the initial trellis by a ratio p to preserve nodes corresponding to one sample out of p consecutive samples. This sub-sampling apparatus associates a p order antecedent node to each preserved node. Trace-back apparatus traces an optimal path back in the sub-sampled trellis by associating the p order antecedent node for each preserved node. The trace back apparatus designates at least the last two nodes of the optimal path. Over-sampling apparatus over-samples the designation of the last two nodes of the optimal path. The factor p is an integer greater than 1 selected so that there is a single path between a node and its p order antecedent in the initial trellis. Hence the bit rate is increased by a factor p, without loss of information.
摘要翻译：解码装置提供对实现定义初始解码网格的维特比类型的决策算法的类型的样本序列的最大似然解码。次采样设备对初始格架进行子采样比例p，以保存对应于p个连续采样中的一个样本的节点。该子采样装置将p阶前置节点与每个保留的节点相关联。追溯装置通过将每个保留的节点的p阶前置节点相关联来追踪子采样网格中的最优路径。回溯装置至少指定最佳路径的最后两个节点。过采样设备对最佳路径的最后两个节点的指定进行过采样。因子p是大于1的整数，因此在初始网格中节点与其p阶前置之间存在单个路径。因此，比特率增加因子p，而不会丢失信息。

2. 发明授权

US06459744B1 Multi-carrier symbol synchronization 有权
标题翻译：多载波符号同步
公开(公告)号：US06459744B1
公开(公告)日：2002-10-01
申请号：US09101881
申请日：1998-11-03
申请人： Jean-Francois Helard , Pierre Combelles , Damien Castelain
发明人： Jean-Francois Helard , Pierre Combelles , Damien Castelain
IPC分类号： H04L700
CPC分类号： H04L5/0048 , H04L27/2605 , H04L27/2613 , H04L27/2662 , H04L27/2665 , H04L27/2679
摘要： A method for the time synchronization of a multi-carrier signal receiver consisting of a sequence of symbols each formed by a plurality of carrier frequencies. Each carrier frequency is modulated by a modulation coefficient. The position of some of said carrier frequencies in the time-frequency space is known to the receiver, and said frequencies are reference carrier frequencies. Each reference carrier frequency bears a reference coefficient with a value that is known to the receiver. The method includes a fine synchronization step, wherein the signal transmission channel impulse response is estimated on the basis of reference coefficients belonging to at least two received symbols. The beginning of the useful portion of each of the symbols is determined, and/or a receiver clock is controlled by analyzing the estimate of said impulse response.
摘要翻译：一种用于由多个载波频率形成的符号序列组成的多载波信号接收机的时间同步的方法。每个载波频率由调制系数调制。时间 - 频率空间中的一些所述载波频率的位置对于接收机是已知的，并且所述频率是参考载波频率。每个参考载波频率具有接收机已知的值的参考系数。该方法包括精细同步步骤，其中基于属于至少两个接收符号的参考系数来估计信号传输信道脉冲响应。确定每个符号的有用部分的开始，和/或通过分析所述脉冲响应的估计来控制接收机时钟。

3. 发明授权

US08913569B2 Method and a device for determining a shifting parameter to be used by a telecommunication device for transferring symbols 有权
标题翻译：用于确定由电信设备用于传送符号的移位参数的方法和装置
公开(公告)号：US08913569B2
公开(公告)日：2014-12-16
申请号：US13255698
申请日：2010-03-12
申请人： Damien Castelain , Cristina Ciochina , Loic Brunel , David Mottier
发明人： Damien Castelain , Cristina Ciochina , Loic Brunel , David Mottier
IPC分类号： H04W72/00 , H04L5/00 , H04L1/06
CPC分类号： H04L5/0023 , H04L1/0625 , H04L1/0668
摘要： A method for determining a shifting parameter P to be used by a telecommunication device for mapping symbols on sub-carriers, the telecommunication device including at least two transmit antennas, the symbols being transferred through each antenna of the telecommunication device on at least an even number K, strictly greater than two, of sub-carriers allocated to the telecommunication device. The telecommunication device transfers on a first antenna on each sub-carrier ‘k’, a signal representing a symbol ‘Xk’ in the frequency domain. The telecommunication device transfers on a second antenna on each sub-carrier ‘k’, a signal representing a symbol ‘X′k’ derived from the signal transferred on the first transmit antenna, for each frequency k, by the formula X′KsecondAnt=ε(−1)k+1X*(p-1-k)mod K. Sub-carriers grouped in at least two clusters are allocated to the telecommunication device, and the shifting parameter p is even and determined according to clusters of sub-carriers allocated to the telecommunication device.
摘要翻译：一种用于确定由电信设备用于在子载波上映射符号的移位参数P的方法，所述电信设备包括至少两个发射天线，所述符号通过至少偶数的电信设备的每个天线传送 K，严格大于2，分配给电信设备的子载波。电信设备在每个子载波'k'上的第一天线上传送表示频域中的符号“Xk”的信号。电信设备在每个子载波'k'上的第二天线上传送表示从对于每个频率k在第一发射天线上传送的信号导出的符号“X'k”的信号，通过公式X'KsecondAnt = （ - 1）k + 1X *（p-1-k）mod K.分组在至少两个簇中的子载波被分配给电信设备，并且移位参数p是均匀的并且根据子集合确定分配给电信设备的载波。

4. 发明授权

US08396031B2 Method for allocating, by a telecommunication device, at least a channel element of a group of channel elements of a channel resource to a destination 失效
标题翻译：用于由电信设备将信道资源的一组信道单元的至少一个信道单元分配给目的地的方法
公开(公告)号：US08396031B2
公开(公告)日：2013-03-12
申请号：US12665060
申请日：2008-06-16
申请人： Loic Brunel , Damien Castelain , Nicolas Gresset
发明人： Loic Brunel , Damien Castelain , Nicolas Gresset
IPC分类号： H04W4/00 , H04J3/16
CPC分类号： H04L25/03866 , H04L1/0001 , H04L1/0023 , H04L1/0071 , H04L1/0072 , H04L1/0075
摘要： The present invention concerns a method for allocating, by a telecommunication device, at least a channel element of a group of channel elements of a channel resource to a destination. Each channel element is a predefined subdivision of the channel resource. The telecommunication device: determines the number of channel elements to be allocated to the destination; selects at least one randomization function according to the number of channel elements to be allocated to the destination; processes the data to be included in the or each channel element to be allocated to the destination by the at least one selected randomization function; transfers the data processed by the at least one selected randomization function by mapping the data processed by the at least one randomization function on the at least one channel element.
摘要翻译：本发明涉及一种用于由电信设备将信道资源的一组信道单元的至少一个信道单元分配给目的地的方法。每个通道元素是通道资源的预定义细分。电信设备：确定要分配给目的地的信道单元的数量; 根据要分配给目的地的信道单元的数量选择至少一个随机化函数; 通过所述至少一个选择的随机化功能处理要包括在要分配给目的地的每个信道单元中的数据; 通过将由所述至少一个随机化功能处理的数据映射到所述至少一个信道元素上来传送由所述至少一个选择的随机化功能处理的数据。

5. 发明授权

US08290018B2 Method for efficient equalization in a telecommunication system including at least one mobile transceiver 失效
标题翻译：包括至少一个移动收发机的电信系统中的有效均衡的方法
公开(公告)号：US08290018B2
公开(公告)日：2012-10-16
申请号：US10815724
申请日：2004-04-02
申请人： David Mottier , Damien Castelain
发明人： David Mottier , Damien Castelain
IPC分类号： H04B1/00
CPC分类号： H04L5/026 , H04B1/692 , H04L25/0228 , H04L25/03343
摘要： The present invention relates to a method for transmitting data Di in a telecommunication system SYST including a first transceiver TXi and a second transceiver RX linked together by means of a communication channel Chi, one of which transceivers being mobile, which method includes: a spreading step for spreading said data Di over a plurality of components Ctj (for j=1 to M), and an equalization step during which each component Ctj (for j=1 to M) is multiplied by an equalization value Wi(j)* representative of communication conditions within the communication channel Chi. According to the invention, the equalization values Wi(j)* are also representative of a Doppler effect generated by movement of the mobile transceiver.The invention enables to significantly compensate for alterations caused to the communication channel Chi by movement of the mobile transceiver.
摘要翻译：本发明涉及一种用于在电信系统SYST中发送数据Di的方法，该方法包括通过通信信道Chi链接在一起的第一收发器TXi和第二收发器RX，其中一个收发器是可移动的，该方法包括：扩展步骤用于将多个分量Ctj（对于j = 1到M）的所述数据Di扩展，以及均衡步骤，其中每个分量Ctj（用于j = 1至M）乘以表示均衡值的均衡值Wi（j）* 沟通渠道中的通信条件。根据本发明，均衡值Wi（j）*也表示通过移动收发信机的移动产生的多普勒效应。本发明能够通过移动收发信机的移动来显着补偿对通信信道Chi造成的变化。

6. 发明授权

US08185118B2 Method for transferring the context of a mobile terminal in a wireless telecommunication network 失效
标题翻译：用于在无线电信网络中传送移动终端的上下文的方法
公开(公告)号：US08185118B2
公开(公告)日：2012-05-22
申请号：US12067236
申请日：2006-05-03
申请人： Nicolas Voyer , Sophie Pautonnier-Perrot , Damien Castelain
发明人： Nicolas Voyer , Sophie Pautonnier-Perrot , Damien Castelain
IPC分类号： H04W36/00 , H04W4/00 , H04M1/725
CPC分类号： H04W36/0055 , H04W28/18 , H04W92/20
摘要： The present invention concerns a method for obtaining a context of a mobile terminal (30) which is expecting to be served by a first base station (10b) of a wireless telecommunication network comprising a plurality of base stations (10) linked together by a telecommunication network. The first base station which is expected to serve the mobile terminal, receives a first message from the mobile terminal (30) through a wireless interface, the message comprising at least an identifier of the mobile terminal (30) and an identifier of a second base station (10a), transfers through the telecommunication network (50) a second message to the second base station (10a) of which the identifier is comprised in the received message, receives through the telecommunication network a third message from the second base station, the third message message comprising the context of the mobile terminal.
摘要翻译：本发明涉及一种用于获得期望由无线电信网络的第一基站（10b）服务的移动终端（30）的上下文的方法，所述无线电信网络包括通过电信连接在一起的多个基站（10）网络。预期为移动终端服务的第一基站通过无线接口从移动终端（30）接收第一消息，该消息至少包括移动终端（30）的标识符和第二基站的标识符站（10a）通过电信网络（50）将第二消息传送到第二基站（10a），其中标识符包含在接收到的消息中，通过电信网络从第二基站接收第三消息，包括移动终端的上下文的第三消息消息。

7. 发明申请

US20100150259A1 METHOD AND A DEVICE FOR DETERMINING SHIFTING PARAMETERS TO BE USED BY AT LEAST A FIRST AND A SECOND TELECOMMUNICATION DEVICES 有权
标题翻译：用于确定由至少第一和第二电信设备使用的移位参数的方法和装置
公开(公告)号：US20100150259A1
公开(公告)日：2010-06-17
申请号：US12633225
申请日：2009-12-08
申请人： Damien Castelain , David Mottier , Cristina Ciochina
发明人： Damien Castelain , David Mottier , Cristina Ciochina
IPC分类号： H04B7/02
CPC分类号： H04L1/0606 , H04L1/0668 , H04L5/0023 , H04L5/0037 , H04L5/0044 , H04L5/0092
摘要： The present invention concerns a method for determining shifting parameters p1 and p2 to be used by a first and a second telecommunication devices for mapping symbols on sub-carriers. The method comprises the steps of: allocating to the first and the second telecommunication device sub-carriers, at least a part of the sub-carriers allocated to the first telecommunication device being allocated to the second telecommunication device, determining the shifting parameter p2, the shifting parameter p2 being even and at least equal to the number of overlapping sub-carriers allocated to both the first and the second telecommunication devices or the shifting parameter p2 being even and at most equal to M2 minus the number of overlapping sub-carriers allocated to both the first and the second telecommunication devices.
摘要翻译：本发明涉及一种用于确定由第一和第二电信设备用于在子载波上映射符号的移位参数p1和p2的方法。该方法包括以下步骤：向第一和第二电信设备子载波分配分配给第一电信设备的子载波的至少一部分被分配给第二电信设备，确定移位参数p2，移动参数p2是偶数，并且至少等于分配给第一和第二电信设备的重叠子载波的数量，或者移位参数p2是偶数，并且最多等于M2减去分配给第一和第二电信设备。

8. 发明授权

US07342910B2 Method of assigning a spreading sequence to a user of a telecommunications network 失效
标题翻译：向电信网络的用户分配扩展序列的方法
公开(公告)号：US07342910B2
公开(公告)日：2008-03-11
申请号：US11243983
申请日：2005-10-06
申请人： David Mottier , Damien Castelain
发明人： David Mottier , Damien Castelain
IPC分类号： H04B7/216 , H04J11/00
CPC分类号： H04J13/16 , H04L5/026
摘要： An apparatus and method for a Multi-Carrier Code Division Multiple Access (“MC-CDMA”) transmission network is disclosed. In the MC-CDMA transmission network a plurality of spreading sequences are assigned to individual users from a plurality of predetermined spreading sequences. The spreading sequences are assigned to users in order to minimize the interference created by the assignment of spreading sequences.
摘要翻译：公开了一种用于多载波码分多址（“MC-CDMA”）传输网络的装置和方法。在MC-CDMA传输网络中，从多个预定扩展序列向多个分配用户分配多个扩展序列。扩展序列被分配给用户以便最小化由扩展序列的分配产生的干扰。

9. 发明授权

US07315530B2 Pre-distortion method for telecommunication system and transmitter for mobile terminal of MC-CDMA telecommunication system 失效
标题翻译： MC-CDMA电信系统移动终端电信系统和发射机预失真方法
公开(公告)号：US07315530B2
公开(公告)日：2008-01-01
申请号：US10335898
申请日：2003-01-03
申请人： Damien Castelain , David Mottier
发明人： Damien Castelain , David Mottier
IPC分类号： H04B7/216
CPC分类号： H04B1/707 , H04L5/026 , H04L25/03343 , H04L27/2647 , H04L2025/03414 , H04L2025/03484
摘要： The invention concerns a pre-distortion method for a telecommunication system comprising a base station and at least one user. Each symbol of said user is spread with a coding sequence over a plurality of carriers to produce a plurality of corresponding frequency components of a signal (Si(t)) to be transmitted over an uplink transmission channel to said base station. Each of said frequency components is weighted by a weighting coefficient (ωi(l)), said weighting coefficients being determined from the channel response coefficients (hi(l)) of the corresponding downlink transmission channel at the respective frequencies of said carriers and from a value of the noise variance (σ2) affecting said carriers.
摘要翻译：本发明涉及一种包括基站和至少一个用户的电信系统的预失真方法。所述用户的每个符号通过多个载波上的编码序列进行扩展，以产生要通过上行链路传输信道发送的信号（S）的多个相应的频率分量（S（i）（t））到说基地台。所述频率分量中的每一个被加权系数加权，所述加权系数根据信道响应系数（h i i（i））确定，在所述载波的各个频率处的对应的下行链路传输信道和影响所述载波的噪声方差（σ^{2）的值。}

10. 发明授权

US07203157B2 Equalization method and device of the GMMSE type 失效
标题翻译： GMMSE型均衡方法及装置
公开(公告)号：US07203157B2
公开(公告)日：2007-04-10
申请号：US10100145
申请日：2002-03-19
申请人： Damien Castelain
发明人： Damien Castelain
IPC分类号： H04J11/00
CPC分类号： H04L5/026 , H04L27/2647 , H04L2025/03414
摘要： Exemplary embodiments of the invention provide an equalization method for a downlink channel in a telecommunication system transmitting MC-CDMA symbols on a plurality of carrier frequencies, in which a plurality of links are established between a transmitter and a plurality of receivers in order to transmit a plurality of coded signals, each link using a distinct access code amongst N possible codes, the conjugate product of two possible codes being proportional to a possible code or to its conjugate, the method including, for at least one receiver, a step of calculating a matrix (B, B) characteristic of the plurality of links, the calculation step first of all calculating the elements of a row or a column in the characteristic matrix and deducing the other rows or the other columns by means of a permutation of the elements.
摘要翻译：本发明的示例性实施例提供了一种用于在多个载波频率上发送MC-CDMA符号的电信系统中的下行链路信道的均衡方法，其中在发射机和多个接收机之间建立多个链路以便发送多个编码信号，每个链路使用N个可能代码中的不同访问代码，两个可能代码的共轭乘积与可能的代码或其共轭成正比，所述方法包括对于至少一个接收器计算一个矩阵（B，B）的特征，计算步骤首先计算特征矩阵中的行或列的元素，并通过元素的排列来推导其他列或其他列。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式