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    • 3. 发明申请
    • Method and receiver for receiving an ultra wide band signal
    • 用于接收超宽带信号的方法和接收机
    • US20060045172A1
    • 2006-03-02
    • US11217773
    • 2005-09-01
    • Veronique Buzenac-SettineriDavid BatemanMarc Bernard De CourvilleMohamed KamounPierre Duhamel
    • Veronique Buzenac-SettineriDavid BatemanMarc Bernard De CourvilleMohamed KamounPierre Duhamel
    • H04B1/707H04B1/69
    • H04B1/69H04B1/709
    • A receiver (103) for receiving an Ultra Wide Band (UWB) signal comprises a receiver front end (105) coupled to symbol point correlators (107). The symbol point correlators (107) comprise a first plurality of correlators which generates correlated signal values around a first symbol decision point of a first symbol by correlating the received UWB signal with a local replica. The first plurality of correlators are time offset with respect to each other to generate first time offset correlated signal values. The time offsets are typically significantly less than the timing jitter of transmit and receive oscillators. The symbol point correlators (107) are coupled to a joint estimator (109) which determines a symbol value of the first symbol in response to the first time offset correlated signal values by joint detection of the symbol value and a time offset of the UWB signal. The invention may effectively reduce time jitter noise to a value determined by the relative time offset between the correlators.
    • 用于接收超宽带(UWB)信号的接收机(103)包括耦合到符号点相关器(107)的接收机前端(105)。 符号点相关器(107)包括第一多个相关器,其通过将接收的UWB信号与本地副本相关联来产生围绕第一符号的第一符号判定点的相关信号值。 第一多个相关器相对于彼此是时间偏移量,以产生第一时间偏移相关信号值。 时间偏移通常明显小于发射和接收振荡器的定时抖动。 符号点相关器(107)耦合到联合估计器(109),联合估计器(109)通过联合检测符号值和UWB信号的时间偏移来响应于第一时间偏移相关信号值确定第一符号的符号值 。 本发明可以有效地将时间抖动噪声降低到由相关器之间的相对时间偏移确定的值。
    • 4. 发明授权
    • Method and apparatus for encoding a modulated signal in a communication system
    • 用于对通信系统中的调制信号进行编码的方法和装置
    • US08009757B2
    • 2011-08-30
    • US11938452
    • 2007-11-12
    • Lina MrouehMarc Bernard De CourvilleLaurent S. MazetStephanie Rouquette-Leveil
    • Lina MrouehMarc Bernard De CourvilleLaurent S. MazetStephanie Rouquette-Leveil
    • H04L27/00
    • H04L25/03343H04L27/3416
    • 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.
    • 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。
    • 7. 发明授权
    • Communication apparatus and a method of transmitting data therefor
    • 通信装置及其发送数据的方法
    • US07751307B2
    • 2010-07-06
    • US11721574
    • 2005-11-18
    • Makus MuckMarc Bernard De CourvilleStephanie Rouquette-Leveil
    • Makus MuckMarc Bernard De CourvilleStephanie Rouquette-Leveil
    • H04J11/00G01R31/08H04J1/00H04J3/16H04B7/02
    • H04L27/261H04L27/262
    • 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.
    • 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。
    • 8. 发明申请
    • Communication Apparatus and a Method of Transmitting Data Therefor
    • 通信设备及其数据传输方法
    • US20080101487A1
    • 2008-05-01
    • US11721574
    • 2005-11-18
    • Makus MuckMarc Bernard De CourvilleStephanie Rouquette-Leveil
    • Makus MuckMarc Bernard De CourvilleStephanie Rouquette-Leveil
    • H04L27/28
    • H04L27/261H04L27/262
    • 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.
    • 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。