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。

公开(公告)号：US06862451B1

公开(公告)日：2005-03-01

申请号：US09673114

申请日：1999-04-12

申请人： Michel Alard

发明人： Michel Alard

IPC分类号： H04J11/00 ,  H04J13/00 ,  H04L5/02 ,  H04L12/56 ,  H04W72/00 ,  H04W72/04 ,  H04W76/02 ,  H04W76/04 ,  H04W84/04 ,  H04Q7/20

CPC分类号： H04W72/042 ,  H04L5/023 ,  H04L27/2698 ,  H04W72/04 ,  H04W76/10 ,  H04W76/20 ,  H04W84/042

摘要： The invention concerns a cellular radio telephone signal comprising a symmetrical two-way main channel, including a main uplink and a main downlink, in particular transmitting low or medium speed data and signaling and control data, and comprising at least one additional channel solely assigned to the downlink, transmitting in particular, high speed data transmission. At one given time, all or part of said supplementary channel transmission capacity can be dynamically allocated to a particular mobile station. Information for retrieving data intended for a particular mobile station and carried by said supplementary channel can be transmitted among said main downlink signaling and control data.

摘要翻译： 本发明涉及包括对称双向主信道的蜂窝无线电话信号，包括主上行链路和主下行链路，特别是传输低速或中速数据以及信令和控制数据，并且包括至少一个附加信道，其仅被分配给 下行链路，特别是高速数据传输。 在一个给定时间，所有或部分所述补充信道传输容量可以被动态分配给特定的移动台。 可以在所述主下行链路信令和控制数据之间发送用于检索针对特定移动台并由所述辅助信道承载的数据的信息。

公开(公告)号：US5640125A

公开(公告)日：1997-06-17

申请号：US564092

申请日：1995-12-13

申请人： Michel Alard

发明人： Michel Alard

IPC分类号： H04L27/00 ,  H04L27/227 ,  H04L27/22

CPC分类号： H04L27/2273 ,  H04L2027/0057

摘要： For demodulating a phase-modulated signal having 2M states of a carrier (M being an integer), the signal is converted into two baseband signals in quadrature. For that, they are multiplied by a signal delivered by a local oscillator at a transposed carrier frequency. Then the baseband signals are digitized by sampling at the clock frequency of the modulating signal. The clock of the signal is recovered by adjusting the phase of a local clock, stabilized at a bit frequency. For that, a minimum value of the intersymbol interference is searched. The signal clock is recovered before the carrier is recovered. Devices for implementing the method are also disclosed.

摘要翻译： PCT No.PCT / FR94 / 00724 Sec。 371 1995年12月13日第 102（e）日期1995年12月13日PCT Filed 1994年6月16日PCT公布。 出版物WO95 / 01034 日期1995年1月5日为了解调具有载波2M状态的相位调制信号（M为整数），该信号被正交地转换成两个基带信号。 为此，它们乘以本地振荡器以转置的载波频率传送的信号。 然后通过在调制信号的时钟频率进行采样对基带信号进行数字化。 信号的时钟通过调整稳定在位频率的本地时钟的相位来恢复。 为此，搜索符号间干扰的最小值。 信号时钟在载波恢复之前被恢复。 还公开了用于实现该方法的设备。

公开(公告)号：US5187807A

公开(公告)日：1993-02-16

申请号：US533600

申请日：1990-06-05

申请人： Michel Alard ,  Jean-Luc Foure

发明人： Michel Alard ,  Jean-Luc Foure

IPC分类号： H04B7/26

CPC分类号： H04W88/08 ,  H04B1/713

摘要： The relay base of the invention comprises a receive antenna connected to a receiver coupling member associated with receiver members connected to respective digital processing units. The digital processing units are connected to transmitter members via link lines each of which is associated with one of the digital processing units and all of the transmitted members via parallel connections, each transmitter member including a switching member causing one of the link lines to be put into communication with the associated transmitter member.

摘要翻译： 本发明的继电器基座包括连接到与连接到相应数字处理单元的接收器构件相关联的接收器耦合构件的接收天线。 数字处理单元经由连接线连接到发射机部件，每条链路线路经由并行连接与数字处理单元之一和所有传输的部件相关联，每个发射机部件包括使得链接线之一被放置的切换部件 与相关联的发射机成员进行通信。

公开(公告)号：US4707730A

公开(公告)日：1987-11-17

申请号：US739718

申请日：1985-05-31

申请人： Michel Alard

发明人： Michel Alard

IPC分类号： H04N5/08 ,  H04J3/06 ,  H04N7/08 ,  H04N7/081 ,  H04N7/083 ,  H04N11/06

CPC分类号： H04N7/083

摘要： In a broadcasting system with time division multiplexing of digital signals containing a synchronization pattern and analog signals, sync extraction is achieved with a process including detecting the extreme values of the signals to be subjected to decoding, after they have been amplified with a gain G, with a time constant compatible with the low cut off frequencies to be accomodated; the gain G is controlled as a decreasing function of the difference between the extreme values with a time constant greater by several orders of size than the repetition period of the multiplex; before decoding and determination of the extreme values, there is added to the amplified signal a DC component which is a decreasing function of the sum of the extreme values, until the retrieval of the clock signal and identification of the synchronization pattern downstream of the coding.

摘要翻译： 在具有包含同步模式和模拟信号的数字信号的时分复用的广播系统中，通过包括检测要进行解码的信号的极值的处理，在用增益G放大之后，实现同步提取， 时间常数与适合低频截止频率兼容; 增益G被控制为极值之间的差的递减函数，其时间常数大于多路复用的重复周期的几个数量级; 在解码和确定极值之前，向放大的信号添加作为极值之和的递减函数的DC分量，直到检索时钟信号并且识别编码下游的同步模式。

公开(公告)号：US07313174B2

公开(公告)日：2007-12-25

申请号：US10467571

申请日：2002-02-07

申请人： Michel Alard ,  Nathalie Goudard

发明人： Michel Alard ,  Nathalie Goudard

IPC分类号： H04B1/707

CPC分类号： H04L1/0007

摘要： A method is provided for extracting a sequence of pilot symbols enabling to estimate the transfer function of a transmission channel. At least a radiocommunication device communicates through the channel with a remote station, the latter regularly delivering to the radiocommunication device a reference pattern. The structure of the reference pattern is variable, depending on at least one characteristic of the transmission channel.

摘要翻译： 提供了一种用于提取能够估计传输信道的传递函数的导频符号序列的方法。 至少无线电通信设备通过信道与远程站进行通信，后者定期向无线电通信设备传送参考模式。 参考图案的结构是可变的，这取决于传输通道的至少一个特性。

公开(公告)号：US07272188B2

公开(公告)日：2007-09-18

申请号：US10381178

申请日：2001-09-20

申请人： Dominique Lacroix-Penther ,  Pierre Combelles ,  Michel Alard

发明人： Dominique Lacroix-Penther ,  Pierre Combelles ,  Michel Alard

IPC分类号： H04L27/28

CPC分类号： H04L27/2613 ,  H04L27/2698

摘要： A multicarrier signal, which includes a temporal succession of symbols formed by a set of data elements, each of said data elements modulating a carrier frequency of the signal. The data elements include reference elements called pilots, whereof the value in transmission is known to at least one receiver designed to receive the signal and informative data elements, whereof the value in transmission is not known a priori to the at least one receiver. One of the caffier frequencies is modulated, at a given time, by one of the data elements, being called a carrier. At least one constraint is imposed on the value of at least one of the informative data elements, so as to reduce, in reception, at least one term of interference affecting at least one of the pilots.

摘要翻译： 一种多载波信号，其包括由一组数据元素形成的符号的时间序列，每个所述数据元素调制该信号的载波频率。 数据元素包括称为导频的参考元件，其中传输中的值对于设计用于接收信号的至少一个接收器和信息数据元素是已知的，其中传输中的值先于该至少一个接收器是未知的。 在给定时间，通过被称为载体之一的数据元素中的一个来调制其中一个卡费尔频率。 对至少一个信息数据元素的值施加至少一个约束，以便在接收时减少影响至少一个导频的至少一个干扰项。

公开(公告)号：US07242721B2

公开(公告)日：2007-07-10

申请号：US10479190

申请日：2002-05-15

申请人： Michel Alard ,  Alexandre Rouxel ,  Nathalie Goudard ,  Franck Bietrix

发明人： Michel Alard ,  Alexandre Rouxel ,  Nathalie Goudard ,  Franck Bietrix

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/0232 ,  H04L25/0248 ,  H04L27/2647

摘要： The invention concerns a method for estimating the transfer function of a multicarrier signal transmission channel 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 characterized 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 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 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.

摘要翻译： 本发明涉及一种用于估计由一组数据元素的时间序列符号组成的多载波信号传输信道的传递函数的方法，每个数据元素调制信号的载波频率，包括导频等的数据元素 所提供的信息数据元素。 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）的组合的形式书写传递函数的步骤; 包括组合中的至少一些系数的基于时间和频率的二维插值的步骤，以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：US20050136934A1

公开(公告)日：2005-06-23

申请号：US10938893

申请日：2004-09-09

申请人： Michel Alard

发明人： Michel Alard

IPC分类号： H04J11/00 ,  H04J13/00 ,  H04L5/02 ,  H04L12/56 ,  H04W72/00 ,  H04W72/04 ,  H04W76/02 ,  H04W76/04 ,  H04W84/04 ,  H04Q7/20

CPC分类号： H04W72/042 ,  H04L5/023 ,  H04L27/2698 ,  H04W72/04 ,  H04W76/10 ,  H04W76/20 ,  H04W84/042

摘要： The invention concerns a cellular radio telephone signal comprising a symmetrical two-way main channel, including a main uplink and a main downlink, in particular transmitting low or medium speed data and signalling and control data, and comprising at least one additional channel solely assigned to the downlink, transmitting in particular, high speed data transmission. At one given time, all or part of said supplementary channel transmission capacity can be dynamically allocated to a particular mobile station. Information for retrieving data intended for a particular mobile station and carried by said supplementary channel can be transmitted among said main downlink signalling and control data.

摘要翻译： 本发明涉及包括对称双向主信道的蜂窝无线电话信号，包括主上行链路和主下行链路，特别是传输低速或中速数据以及信令和控制数据，并且包括至少一个附加信道，其仅被分配给 下行链路，特别是高速数据传输。 在一个给定时间，所有或部分所述补充信道传输容量可以被动态分配给特定的移动台。 可以在所述主下行链路信令和控制数据之间发送用于检索针对特定移动台并由所述辅助信道承载的数据的信息。

公开(公告)号：US06584068B1

公开(公告)日：2003-06-24

申请号：US09297787

申请日：1999-08-23

申请人： Michel Alard

发明人： Michel Alard

IPC分类号： H04J1100

CPC分类号： H04L27/2602 ,  H04L27/264 ,  H04L27/2698

摘要： This invention concerns a multicarrier signal designed to be transmitted to digital receivers, especially in a non-stationary transmission channel. The multicarrier signal corresponds to the frequency multiplexing of several elementary carriers. Each of the several elementary carriers corresponds to a series of symbols. The multicarrier signal is built on a non-orthogonal time-frequency lattice with a density two.

摘要翻译： 本发明涉及被设计为发送到数字接收机的多载波信号，特别是在非固定传输信道中。 多载波信号对应于几个基本载波的频率复用。 几个基本载体中的每一个对应于一系列符号。 多载波信号建立在密度为2的非正交时频格点上。