Reduction of interference in an OFDM signal with weighting vectors evolving in vector subspaces
    1.
    发明授权
    Reduction of interference in an OFDM signal with weighting vectors evolving in vector subspaces 有权
    用矢量子空间中的权重向量减少OFDM信号中的干扰

    公开(公告)号:US08401131B2

    公开(公告)日:2013-03-19

    申请号:US12747111

    申请日:2008-12-09

    IPC分类号: H03D1/04

    摘要: To reduce interferences in signals received by a receiver through a propagation channel, each including symbols distributed according to frequency and time dimensions and corresponding to a common emitted signal, the receiver weights an estimate of the emitted signal and the received signals by weighting vectors evolving in vector subspaces representing time variations and frequency variations of the channels for propagating the signals between an emitter and the receiver. These vector subspaces are defined by matrices, some columns of which are suppressed as a function of frequency and time constraints of the channel. The receiver minimizes a function of the difference between the sum of weighted received signals and the weighted estimate of the emitted signal in order to estimate the emitted signal as a function of the weighting vectors and the received signals.

    摘要翻译: 为了减少由接收机通过传播信道接收的信号的干扰,每个信号包括根据频率和时间维度分布并且对应于公共发射信号的符号,接收机通过加权矢量对发射信号和接收信号的估计进行加权, 表示用于在发射器和接收器之间传播信号的通道的时间变化和频率变化的矢量子空间。 这些矢量子空间由矩阵定义,其中一些列被抑制为通道的频率和时间约束的函数。 接收机将加权接收信号的和之差和发射信号的加权估计的函数最小化,以便根据加权向量和接收信号来估计发射信号。

    REDUCTION OF INTERFERENCE IN AN OFDM SIGNAL WITH WEIGHTING VECTORS EVOLVING IN VECTOR SUBSPACES
    2.
    发明申请
    REDUCTION OF INTERFERENCE IN AN OFDM SIGNAL WITH WEIGHTING VECTORS EVOLVING IN VECTOR SUBSPACES 有权
    降低矢量参考矢量中正交信号的干扰

    公开(公告)号:US20100322339A1

    公开(公告)日:2010-12-23

    申请号:US12747111

    申请日:2008-12-09

    IPC分类号: H04B15/00

    摘要: To reduce interferences in signals received by a receiver through a propagation channel, each including symbols distributed according to frequency and time dimensions and corresponding to a common emitted signal, the receiver weights an estimate of the emitted signal and the received signals by weighting vectors evolving in vector subspaces representing time variations and frequency variations of the channels for propagating the signals between an emitter and the receiver. These vector subspaces are defined by matrices, some columns of which are suppressed as a function of frequency and time constraints of the channel. The receiver minimizes a function of the difference between the sum of weighted received signals and the weighted estimate of the emitted signal in order to estimate the emitted signal as a function of the weighting vectors and the received signals.

    摘要翻译: 为了减少由接收机通过传播信道接收的信号的干扰,每个信号包括根据频率和时间维度分布并且对应于公共发射信号的符号,接收机通过加权矢量对发射信号和接收信号的估计进行加权, 表示用于在发射器和接收器之间传播信号的通道的时间变化和频率变化的矢量子空间。 这些矢量子空间由矩阵定义,其中一些列被抑制为通道的频率和时间约束的函数。 接收机将加权接收信号的和之差和发射信号的加权估计的函数最小化,以便根据加权向量和接收信号来估计发射信号。

    DECODING SYMBOLS OF A SIGNAL DISTRIBUTED ACCORDING TO FREQUENCY AND TIME DIMENSIONS
    3.
    发明申请
    DECODING SYMBOLS OF A SIGNAL DISTRIBUTED ACCORDING TO FREQUENCY AND TIME DIMENSIONS 审中-公开
    根据频率和时间尺寸分解的信号的解码符号

    公开(公告)号:US20080273630A1

    公开(公告)日:2008-11-06

    申请号:US12110423

    申请日:2008-04-28

    IPC分类号: H04L27/06

    摘要: A signal of OFDM type received in a radio receiver via a propagation channel includes symbols distributed according to frequency and time. The receiver determines likelihoods of the symbols, decodes the received signal to yield a decoded signal as a function of the likelihoods of the symbols, and estimates an instantaneous noise power of the received signal as a function of a difference between the received signal and a reconstructed noise-free signal derived from the decoded signal. A filtering module determines a bounded distribution of the instantaneous noise power as a function of frequency and/or time, and filters the distribution to yield a filtered noise variance as a function of a frequency and/or time parameter of the propagation channel. A corrector weights the likelihoods of the symbols of the received signal to be decoded as a function of the filtered noise variance.

    摘要翻译: 经由传播信道在无线接收机中接收的OFDM类型的信号包括根据频率和时间分配的符号。 接收机确定符号的可能性,对接收到的信号进行解码以产生作为符号的似然性的函数的解码信号,并且将接收信号的瞬时噪声功率估计为接收信号与重构的接收信号之间的差的函数 从解码信号得到的无噪声信号。 滤波模块确定作为频率和/或时间的函数的瞬时噪声功率的有界分布,并且对该分布进行滤波以产生作为传播信道的频率和/或时间参数的函数的滤波噪声方差。 校正器将要解码的接收信号的符号的可能性加权为滤波噪声方差的函数。

    ERROR CORRECTION ENCODING METHOD, DECODING METHOD AND ASSOCIATED DEVICES
    6.
    发明申请
    ERROR CORRECTION ENCODING METHOD, DECODING METHOD AND ASSOCIATED DEVICES 有权
    错误校正编码方法,解码方法和相关设备

    公开(公告)号:US20140006909A1

    公开(公告)日:2014-01-02

    申请号:US14004800

    申请日:2012-03-14

    IPC分类号: G06F11/10

    摘要: The present invention relates to an error correction encoding method for encoding so-called source digital data, having the form of a frame, wherein said data can be classified into N classes, where N is an integer at least equal to 2. The encoding method according to the invention comprises: a first step of recursive systematic convolutional encoding of the data of the class 1; an implementation of the following steps, for each n ranging from 1 to M, where M is a positive integer equal to or lower than N−1: nth mixing (108n+1) of a set formed by data of the class n+1 (102n+1), the systematic data and the parity data from a preceding encoding step; (n+1)th recursive systematic convolutional encoding (110n+1) of data formed by the result of nth mixing. The invention also relates to a method for decoding encoded data with the encoding method according to the invention, as well as associated encoding device and decoding device.

    摘要翻译: 本发明涉及一种用于编码具有帧形式的所谓源数字数据的纠错编码方法,其中所述数据可以分为N类,其中N是至少等于2的整数。编码方法 根据本发明包括:对类1的数据进行递归系统卷积编码的第一步骤; 对于从1到M的每个n的范围,其中M是等于或低于由类n + 1的数据形成的集合的N-1:第n混合(108n + 1)的正整数 (102n + 1),来自前一编码步骤的系统数据和奇偶校验数据; (n + 1)个递归系统卷积编码(110n + 1)。 本发明还涉及使用根据本发明的编码方法对编码数据进行解码的方法,以及相关的编码装置和解码装置。

    Error correction encoding method, decoding method and associated devices
    7.
    发明授权
    Error correction encoding method, decoding method and associated devices 有权
    纠错编码方法,解码方式及相关设备

    公开(公告)号:US08782501B2

    公开(公告)日:2014-07-15

    申请号:US14004799

    申请日:2012-03-14

    摘要: An error correction encoding method is provided for encoding in parallel source digital data, having the form of a frame, wherein said data can be classified into N classes, where N is an integer at least equal to 2.The encoding method includes: a first recursive systematic convolutional encoding step of data to be encoded, formed by the data of the class 1; and an implementation of the following steps, for each n ranging from 1 to M, where M is a positive integer equal to or lower than N−1: nth mixing of a set formed by the data of the class n+1 and the systematic data of the preceding encoding; and (n+1)th recursive systematic convolutional encoding of data to be encoded, formed by the result of the nth mixing. Also disclosed is a related decoding method, as well as an associated encoding and decoding devices.

    摘要翻译: 提供纠错编码方法,用于对具有帧形式的并行源数字数据进行编码,其中所述数据可以分为N类,其中N是至少等于2的整数。编码方法包括:第一 由第1类的数据形成的要编码的数据的递归系统卷积编码步骤; 以及以下步骤的实现,对于从1到M的每个n,其中M是等于或低于由n + 1类数据形成的集合的N-1:n混合的正整数和系统 上述编码的数据; 和第n个混合的结果形成的(n + 1)个要编码的数据的递归系统卷积编码。 还公开了相关的解码方法,以及相关联的编码和解码装置。

    Error correction encoding method, decoding method and associated devices
    8.
    发明授权
    Error correction encoding method, decoding method and associated devices 有权
    纠错编码方法,解码方式及相关设备

    公开(公告)号:US08904264B2

    公开(公告)日:2014-12-02

    申请号:US14004800

    申请日:2012-03-14

    摘要: An error correction encoding method is provided for encoding source digital data, having the form of a frame, wherein the data can be classified into N classes, where N is an integer at least equal to 2.The encoding method includes: a first step of recursive systematic convolutional encoding of the data of the class 1; an implementation of the following steps, for each n ranging from 1 to M, where M is a positive integer equal to or lower than N−1: nth mixing (108n+1) of a set formed by data of the class n+1 (102n+1), the systematic data and the parity data from a preceding encoding step; and (n+1)th recursive systematic convolutional encoding (110n+1) of data formed by the result of nth mixing. A decoding method is provided for decoding encoded data with the encoding method, using an associated encoding device and a decoding device.

    摘要翻译: 提供一种用于对具有帧形式的源数字数据进行编码的纠错编码方法,其中数据可以分为N类,其中N是至少等于2的整数。编码方法包括:第一步骤 1类数据的递归系统卷积编码; 对于从1到M的每个n的范围,其中M是等于或低于由类n + 1的数据形成的集合的N-1:第n混合(108n + 1)的正整数 (102n + 1),来自前一编码步骤的系统数据和奇偶校验数据; 和由第n个混合结果形成的数据的第(n + 1)个递归系统卷积编码(110n + 1)。 提供了一种解码方法,用于使用相关联的编码装置和解码装置,利用编码方法对编码数据进行解码。

    ERROR CORRECTION ENCODING METHOD, DECODING METHOD AND ASSOCIATED DEVICES
    9.
    发明申请
    ERROR CORRECTION ENCODING METHOD, DECODING METHOD AND ASSOCIATED DEVICES 有权
    错误校正编码方法,解码方法和相关设备

    公开(公告)号:US20140006910A1

    公开(公告)日:2014-01-02

    申请号:US14004799

    申请日:2012-03-14

    IPC分类号: H03M13/25

    摘要: An error correction encoding method is provided for encoding in parallel source digital data, having the form of a frame, wherein said data can be classified into N classes, where N is an integer at least equal to 2.The encoding method includes: a first recursive systematic convolutional encoding step of data to be encoded, formed by the data of the class 1; and an implementation of the following steps, for each n ranging from 1 to M, where M is a positive integer equal to or lower than N−1: nth mixing of a set formed by the data of the class n+1 and the systematic data of the preceding encoding; and (n+1)th recursive systematic convolutional encoding of data to be encoded, formed by the result of the nth mixing. Also disclosed is a related decoding method, as well as an associated encoding and decoding devices.

    摘要翻译: 提供纠错编码方法,用于对具有帧形式的并行源数字数据进行编码,其中所述数据可以分为N类,其中N是至少等于2的整数。编码方法包括:第一 由第1类的数据形成的要编码的数据的递归系统卷积编码步骤; 以及以下步骤的实现,对于从1到M的每个n,其中M是等于或低于由n + 1类数据形成的集合的N-1:n混合的正整数和系统 上述编码的数据; 和第n个混合的结果形成的(n + 1)个要编码的数据的递归系统卷积编码。 还公开了相关的解码方法,以及相关联的编码和解码装置。