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1. 发明授权

US07719955B2 Transmission of signaling information in an OFDM communication system 有权
标题翻译：在OFDM通信系统中发送信令信息
公开(公告)号：US07719955B2
公开(公告)日：2010-05-18
申请号：US11912623
申请日：2006-05-01
申请人： Marc Bernard De Courville , Stephanie Rouquette-Leveil , Patrick Labbe , Markus D. Muck , Sebastien Simoens
发明人： Marc Bernard De Courville , Stephanie Rouquette-Leveil , Patrick Labbe , Markus D. Muck , Sebastien Simoens
IPC分类号： H04J11/00 , H04J1/00 , H04L27/00
CPC分类号： H04L5/0094 , H04L5/0007 , H04L5/0046
摘要： An Orthogonal Frequency Division Multiplexing, OFDM, transmitter comprises a signalling data generator (113) which generates a set of data symbols indicative of physical layer characteristics of data transmissions from the OFDM transmitter (100). A first symbol generator (115) and second symbol generator (117) generates a first and second OFDM signalling symbol by allocating the set of data symbols to subcarriers. The allocation of the physical layer data symbols to subcarriers is different for the first OFDM signalling symbol and the second OFDM signalling symbol. A data packet generator (105) and transmitter (101) generate a data packet and transmit this to an OFDM receiver (300). The OFDM receiver (300) determines the physical layer data symbols by combining the data symbols of corresponding subcarriers of the first and second OFDM signalling symbols and uses the resulting information to decode the user data of the data packet.
摘要翻译：正交频分复用OFDM，发射机包括信令数据生成器（113），其产生指示来自OFDM发射机（100）的数据传输的物理层特性的一组数据符号。第一符号发生器（115）和第二符号发生器（117）通过将该组数据符号分配给子载波来产生第一和第二OFDM信令符号。物理层数据符号分配给子载波对于第一OFDM信令符号和第二OFDM信令符号是不同的。数据包发生器（105）和发送器（101）产生数据包并将其发送到OFDM接收器（300）。 OFDM接收机（300）通过组合第一和第二OFDM信令符号的相应子载波的数据符号来确定物理层数据符号，并使用得到的信息来解码数据分组的用户数据。

2. 发明授权

US08009757B2 Method and apparatus for encoding a modulated signal in a communication system 有权
标题翻译：用于对通信系统中的调制信号进行编码的方法和装置
公开(公告)号：US08009757B2
公开(公告)日：2011-08-30
申请号：US11938452
申请日：2007-11-12
申请人： Lina Mroueh , Marc Bernard De Courville , Laurent S. Mazet , Stephanie Rouquette-Leveil
发明人： Lina Mroueh , Marc Bernard De Courville , Laurent S. Mazet , Stephanie Rouquette-Leveil
IPC分类号： H04L27/00
CPC分类号： H04L25/03343 , H04L27/3416
摘要： Disclosed is a method and apparatus for encoding a modulated signal in a communication system. The method comprises generating an initial constellation, applying a vertical axis symmetry to the initial constellation to generate a first resulting constellation, translating the first resulting constellation to a left direction of the initial constellation to produce a left flipped constellation, applying a horizontal axis symmetry to the initial constellation to generate a second resulting constellation, translating the second resulting constellation to an up direction of the initial constellation to produce an up flipped constellation, applying a central axis symmetry to the initial constellation to generate a third resulting constellation; and translating the third resulting constellation to a left-up direction of the initial constellation to produce a left-up flipped constellation.
摘要翻译：公开了一种在通信系统中对调制信号进行编码的方法和装置。该方法包括生成初始星座图，将垂直轴对称性应用于初始星座图以产生第一结果星座，将第一结果星座转换为初始星座图的左方向，以产生左折叠星座，将水平轴对称应用于初始星座图以产生第二个所得到的星座，将第二个所得到的星座转换为初始星座图的向上方向，以产生向上翻转星座，将中心轴对称性应用于初始星座以产生第三个结果星座; 并将第三个结果星座转换成初始星座的左上方，以产生一个向左翻转的星座。

3. 发明申请

US20090129258A1 TRANSMISSION OF SIGNALLING INFORMATION IN AN OFDM COMMUNICATION SYSTEM 有权
标题翻译： OFDM通信系统中信令信息的传输
公开(公告)号：US20090129258A1
公开(公告)日：2009-05-21
申请号：US11912623
申请日：2006-05-01
申请人： Marc Bernard De Courville , Stephanie Rouquette-Leveil , Patrick Labbe , Markus D. Muck , Sebastien Simoens
发明人： Marc Bernard De Courville , Stephanie Rouquette-Leveil , Patrick Labbe , Markus D. Muck , Sebastien Simoens
IPC分类号： H04J11/00
CPC分类号： H04L5/0094 , H04L5/0007 , H04L5/0046
摘要： An Orthogonal Frequency Division Multiplexing, OFDM, transmitter comprises a signalling data generator (113) which generates a set of data symbols indicative of physical layer characteristics of data transmissions from the OFDM transmitter (100). A first symbol generator (115) and second symbol generator (117) generates a first and second OFDM signalling symbol by allocating the set of data symbols to subcarriers. The allocation of the physical layer data symbols to subcarriers is different for the first OFDM signalling symbol and the second OFDM signalling symbol. A data packet generator (105) and transmitter (101) generate a data packet and transmit this to an OFDM receiver (300). The OFDM receiver (300) determines the physical layer data symbols by combining the data symbols of corresponding subcarriers of the first and second OFDM signalling symbols and uses the resulting information to decode the user data of the data packet.
摘要翻译：正交频分复用OFDM，发射机包括信令数据生成器（113），其产生指示来自OFDM发射机（100）的数据传输的物理层特性的一组数据符号。第一符号发生器（115）和第二符号发生器（117）通过将该组数据符号分配给子载波来产生第一和第二OFDM信令符号。物理层数据符号分配给子载波对于第一OFDM信令符号和第二OFDM信令符号是不同的。数据包发生器（105）和发送器（101）产生数据包并将其发送到OFDM接收器（300）。 OFDM接收机（300）通过组合第一和第二OFDM信令符号的相应子载波的数据符号来确定物理层数据符号，并使用得到的信息来解码数据分组的用户数据。

4. 发明授权

US07751307B2 Communication apparatus and a method of transmitting data therefor 有权
标题翻译：通信装置及其发送数据的方法
公开(公告)号：US07751307B2
公开(公告)日：2010-07-06
申请号：US11721574
申请日：2005-11-18
申请人： Makus Muck , Marc Bernard De Courville , Stephanie Rouquette-Leveil
发明人： Makus Muck , Marc Bernard De Courville , Stephanie Rouquette-Leveil
IPC分类号： H04J11/00 , G01R31/08 , H04J1/00 , H04J3/16 , H04B7/02
CPC分类号： H04L27/261 , H04L27/262
摘要： An Orthogonal Frequency Division Multiplex (OFDM) transmitter (100) comprises a symbol generator (103) for generating a first OFDM symbol comprising user data and pilot data where the pilot data comprises a set of predetermined non-orthogonal pilot symbols. A weight generator (109) uses an amplitude estimator (107) for selecting a set of weights for the pilot data of the first OFDM symbol in response to a time domain amplitude variation characteristic of the first OFDM symbol. In particular, the peak to average power ratio may be determined. The set of weights are selected from a discrete alphabet of weights. A weight processor (113) determines a second OFDM symbol by weighting the pilot symbols by the set of weights. The second OFDM symbol is transmitted to a receiver without transmitting identification of the selected set of weights. The receiver may perform a blind detection of the applied weights and may compensate the received pilot symbols for the estimated weight.
摘要翻译：正交频分复用（OFDM）发射机（100）包括用于生成包括用户数据和导频数据的第一OFDM符号的符号发生器（103）。导频数据包括一组预定的非正交导频符号。权重发生器（109）使用振幅估计器（107）来响应于第一OFDM符号的时域振幅变化特性来选择导频数据的一组加权。可以确定峰均功率比。权重集是从离散的权重字母表中选出的。权重处理器（113）通过对所述导频符号加权所述权重集来确定第二OFDM符号。第二OFDM符号被发送到接收机，而不发送所选择的一组权重的标识。接收机可以执行所施加的权重的盲检测，并且可以对所估计权重的接收到的导频符号进行补偿。

5. 发明申请

US20080101487A1 Communication Apparatus and a Method of Transmitting Data Therefor 有权
标题翻译：通信设备及其数据传输方法
公开(公告)号：US20080101487A1
公开(公告)日：2008-05-01
申请号：US11721574
申请日：2005-11-18
申请人： Makus Muck , Marc Bernard De Courville , Stephanie Rouquette-Leveil
发明人： Makus Muck , Marc Bernard De Courville , Stephanie Rouquette-Leveil
IPC分类号： H04L27/28
CPC分类号： H04L27/261 , H04L27/262
摘要： An Orthogonal Frequency Division Multiplex (OFDM) transmitter (100) comprises a symbol generator (103) for generating a first OFDM symbol comprising user data and pilot data where the pilot data comprises a set of predetermined non-orthogonal pilot symbols. A weight generator (109) uses an amplitude estimator (107) for selecting a set of weights for the pilot data of the first OFDM symbol in response to a time domain amplitude variation characteristic of the first OFDM symbol. In particular, the peak to average power ratio may be determined. The set of weights are selected from a discrete alphabet of weights. A weight processor (113) determines a second OFDM symbol by weighting the pilot symbols by the set of weights. The second OFDM symbol is transmitted to a receiver without transmitting identification of the selected set of weights. The receiver may perform a blind detection of the applied weights and may compensate the received pilot symbols for the estimated weight.
摘要翻译：正交频分复用（OFDM）发射机（100）包括用于产生包括用户数据和导频数据的第一OFDM符号的符号发生器（103），其中导频数据包括一组预定的非正交导频符号。权重发生器（109）使用振幅估计器（107）来响应于第一OFDM符号的时域振幅变化特性来选择第一OFDM符号的导频数据的一组加权。特别地，峰值与平均功率比可以被确定。权重集是从离散的权重字母表中选出的。权重处理器（113）通过对所述导频符号加权所述权重集来确定第二OFDM符号。第二OFDM符号被发送到接收机，而不发送所选择的一组权重的标识。接收机可以执行所施加的权重的盲检测，并且可以对所估计权重的接收到的导频符号进行补偿。

6. 发明申请

US20080101482A1 Method and apparatus for refining MIMO channel estimation using the signal field of the data frame 审中-公开
标题翻译：使用数据帧的信号域来精细化MIMO信道估计的方法和装置
公开(公告)号：US20080101482A1
公开(公告)日：2008-05-01
申请号：US11588151
申请日：2006-10-26
申请人： Patrick Labbe , Marc Bernard De Courville , Stephanie Rouquette-Leveil
发明人： Patrick Labbe , Marc Bernard De Courville , Stephanie Rouquette-Leveil
IPC分类号： H04K1/10
CPC分类号： H04L25/0236 , H04L25/0212 , H04L25/022
摘要： A method is provided to compensate for environmental factors experienced by a wireless signal during transmission between a transmitter and a receiver. The method begins by receiving a wireless signal that includes a data frame having a preamble used to estimate a quantity (e.g., a channel transfer function) relating to signal quality. A portion of the preamble includes information specifying at least one parameter defining a format employed by the data frame. The selected portion of the preamble is decoded and a value for the quantity is estimated using the received preamble, including the decoded selected portion thereof. A signal is demodulated based at least in part on the estimated value of the quantity.
摘要翻译：提供了一种在发射机和接收机之间的传输期间补偿由无线信号所经历的环境因素的方法。该方法通过接收包括具有用于估计与信号质量有关的数量（例如，信道传递函数）的前同步码的数据帧的无线信号开始。前导序列的一部分包括指定定义数据帧采用的格式的至少一个参数的信息。前导码的所选部分被解码，并且使用包括其解码的所选部分的接收到的前导码来估计数量的值。至少部分地基于数量的估计值来解调信号。

7. 发明授权

US08798202B2 Method and apparatus using sounding PPDUs to provide range extension to IEEE 802.11n signals 有权
标题翻译：使用声音PPDU的IEEE 802.11n信号范围扩展的方法和装置
公开(公告)号：US08798202B2
公开(公告)日：2014-08-05
申请号：US12615860
申请日：2009-11-10
申请人： Stephanie Rouquette-Leveil , Marc Bernard De Courville , Patrick Labbe
发明人： Stephanie Rouquette-Leveil , Marc Bernard De Courville , Patrick Labbe
IPC分类号： H04L27/00 , H04L1/06
CPC分类号： H04L1/06 , H04B7/0671 , H04L1/0618 , H04L25/0204 , H04L25/022 , H04L25/0228
摘要： A wireless transmitter includes a stream parser for generating a plurality of spatial streams from a digital signal and a space time block coder (STBC) for mapping each of the spatial streams to a plurality of space-time streams that each include data and a preamble for estimating a channel transfer function. The transmitter also includes a spatial mapper for spatially expanding each of the space-time streams by applying a spatial expansion matrix to data and to first training symbols used in the preamble to probe a channel experienced by the data and by applying an extension matrix to second training symbols used in the preamble to probe at least one additional dimension of the channel to enable use of beamforming to achieve range extension The spatial expansion matrix and the extension matrix form an overall matrix that has at least two orthogonal columns with different norms. The wireless transmitter also includes an analog front end for modulating the spatially expanded space-time streams onto a wireless carrier.
摘要翻译：无线发射机包括用于从数字信号产生多个空间流的流分析器和用于将每个空间流映射到多个空时流的空时分组编码器（STBC），每个空时流包括数据和前导码，估计信道传递函数。发射机还包括空间映射器，用于通过将空间扩展矩阵应用于数据和在前导码中使用的第一训练符号来空间扩展每个空时流，以探测数据所经历的信道，并通过对第二个应用扩展矩阵在前导码中使用的训练符号以探测信道的至少一个附加维度，以使得能够使用波束成形来实现范围扩展空间扩展矩阵和扩展矩阵形成具有至少两个具有不同规范的正交列的整体矩阵。无线发射机还包括用于将空间扩展的空时流调制到无线载波上的模拟前端。

8. 发明授权

US08611409B2 Method and apparatus for performing channel equalization on a MIMO signal 有权
标题翻译：在MIMO信号上执行信道均衡的方法和装置
公开(公告)号：US08611409B2
公开(公告)日：2013-12-17
申请号：US12808282
申请日：2008-12-16
申请人： Anahid Robert , David G. Bateman , Philippe Bernardin , Stephanie Rouquette-Leveil
发明人： Anahid Robert , David G. Bateman , Philippe Bernardin , Stephanie Rouquette-Leveil
IPC分类号： H03H7/30
CPC分类号： H04L25/03152 , H04L25/0232 , H04L25/0234 , H04L25/0244 , H04L2025/03414 , H04L2025/03426
摘要： A method is provided for performing channel equalization on a wireless signal. The method includes: (i) formulating an equalizer associated with sub-carriers of the wireless signal, wherein the equalizer is a function of a quantity relating to signal quality (305); (ii) determining an adjoint of the equalizer over a selected number of the subcarriers (310); (iii) interpolating the adjoint determined in (ii) to obtain an adjoint of the equalizer over remaining ones of the subcarriers of the wireless signal (315); and (iv) generating an equalized signal for each of the subcarriers using the adjoint of the equalizer over the selected number of subcarriers and the interpolated adjoint over the remaining ones of the subcarriers (320).
摘要翻译：提供了一种用于在无线信号上执行信道均衡的方法。该方法包括：（i）制定与无线信号的子载波相关联的均衡器，其中均衡器是与信号质量相关的量的函数（305）; （ii）确定所述均衡器在选定数量的子载波上的伴随（310）; （iii）内插在（ii）中确定的伴随，以获得与所述无线信号（315）的所述子载波中剩余的一个的所述均衡器的伴随; 以及（iv）使用所选择的子载波数量上的均衡器的伴随和所述副载波中剩余的子载波上的内插伴随来产生每个子载波的均衡信号。

9. 发明授权

US08223624B2 Method and apparatus for transmitting and receiving a data symbol stream 有权
标题翻译：用于发送和接收数据符号流的方法和装置
公开(公告)号：US08223624B2
公开(公告)日：2012-07-17
申请号：US11571586
申请日：2005-07-07
申请人： Stephanie Rouquette-Leveil , Marc Bernard De Courville , Alexandre Ribeiro Dias , Sebastien Simoens
发明人： Stephanie Rouquette-Leveil , Marc Bernard De Courville , Alexandre Ribeiro Dias , Sebastien Simoens
IPC分类号： H04J11/00
CPC分类号： H04B7/0667 , H04B7/0697 , H04L1/0625 , H04L1/0656 , H04L1/0668 , H04L2001/0098
摘要： A transmitter comprises a block generator (109) which divides a data symbol stream into data symbol blocks. A divide processor (111) divides each block into a first set of data symbols stored in a first set buffer (113) and a second set of data symbols stored in a second set buffer (115). A space time block encoder (117) codes the first set in accordance with a space time block code to generate a coded set of data symbols. A parallel processor (119) then creates a plurality of parallel data streams from the coded set and the second set. Each of the parallel data streams is allocated to one of a plurality of antennas (129-135). A plurality of parallel stream transmitters (121-127) transmits the parallel data streams in parallel in a communication channel from the plurality of transmit antennas (129-135).
摘要翻译：发射机包括将数据符号流划分为数据符号块的块发生器（109）。分割处理器（111）将每个块划分为存储在第一设置缓冲器（113）中的第一组数据符号和存储在第二设置缓冲器（115）中的第二组数据符号。空间时间块编码器（117）根据空时块代码对第一组编码，以生成编码的数据符号组。然后，并行处理器（119）从编码集合和第二集合创建多个并行数据流。每个并行数据流被分配给多个天线之一（129-135）。多个并行流发送器（121-127）在来自多个发送天线（129-135）的通信信道中并行地发送并行数据流。

10. 发明申请

US20110299582A1 Method and Apparatus for Performing Channel Equalization on a MIMO Signal 有权
标题翻译：用于在MIMO信号上执行信道均衡的方法和装置
公开(公告)号：US20110299582A1
公开(公告)日：2011-12-08
申请号：US12808282
申请日：2008-12-16
申请人： Anahid Robert , David G. Bateman , Philippe Bernardin , Stephanie Rouquette-Leveil
发明人： Anahid Robert , David G. Bateman , Philippe Bernardin , Stephanie Rouquette-Leveil
IPC分类号： H03H7/30
CPC分类号： H04L25/03152 , H04L25/0232 , H04L25/0234 , H04L25/0244 , H04L2025/03414 , H04L2025/03426
摘要： A method is provided for performing channel equalization on a wireless signal. The method includes: (i) formulating an equalizer associated with sub-carriers of the wireless signal, wherein the equalizer is a function of a quantity relating to signal quality (305); (ii) determining an adjoint of the equalizer over a selected number of the subcarriers (310); (iii) interpolating the adjoint determined in (ii) to obtain an adjoint of the equalizer over remaining ones of the subcarriers of the wireless signal (315); and (iv) generating an equalized signal for each of the subcarriers using the adjoint of the equalizer over the selected number of subcarriers and the interpolated adjoint over the remaining ones of the subcarriers (320).
摘要翻译：提供了一种用于在无线信号上执行信道均衡的方法。该方法包括：（i）制定与无线信号的子载波相关联的均衡器，其中均衡器是与信号质量相关的量的函数（305）; （ii）确定所述均衡器在选定数量的子载波上的伴随（310）; （iii）内插在（ii）中确定的伴随，以获得与所述无线信号（315）的所述子载波中剩余的一个的所述均衡器的伴随; 以及（iv）使用所选择的子载波数量上的均衡器的伴随和所述副载波中剩余的子载波上的内插伴随来产生每个子载波的均衡信号。

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