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    Method, device, and apparatus for multi-stream multi-band transmission
    1.
    发明授权
    Method, device, and apparatus for multi-stream multi-band transmission 有权
    用于多流多波段传输的方法，设备和装置

    公开(公告)号：US07899125B2

    公开(公告)日：2011-03-01

    申请号：US11812283

    申请日：2007-06-18

    申请人： Alexander A. Maltsev ,  Alexey E. Rubtsov ,  Ali S. Sadri ,  Andrey V. Pudeyev ,  Sergey Tiraspolsky ,  Alexey Davydov

    发明人： Alexander A. Maltsev ,  Alexey E. Rubtsov ,  Ali S. Sadri ,  Andrey V. Pudeyev ,  Sergey Tiraspolsky ,  Alexey Davydov

    IPC分类号： H04L27/28

    CPC分类号： H04L27/2628

    摘要： A transmitter may include a set of stream groups, each including two or more streams producing a set of orthogonal frequency division multiplexed (OFDM) stream-symbols and a coding unit interleaving the stream-symbols into an interleaved signal. An input bit multiplexer may route an input data signal to be divided among each of the streams. An inverse fast Fourier transform unit may operate on a combined signal formed from interleaving the interleaved signals from each stream group. Each stream may include for example a baseband signal processor producing the OFDM stream-symbols.

    摘要翻译： 发射机可以包括一组流组，每组包括产生一组正交频分复用（OFDM）流符号的两个或更多个流，以及将流符号交织到交织信号中的编码单元。 输入位复用器可以路由要在每个流之间划分的输入数据信号。 反相快速傅立叶变换单元可以对从每个流组交织的交错信号形成的组合信号进行操作。 每个流可以包括例如产生OFDM流符号的基带信号处理器。

    Adaptive channel estimation for orthogonal frequency division multiplexing systems or the like
    3.
    发明授权
    Adaptive channel estimation for orthogonal frequency division multiplexing systems or the like 有权
    用于正交频分复用系统的自适应信道估计等

    公开(公告)号：US07394873B2

    公开(公告)日：2008-07-01

    申请号：US10379650

    申请日：2003-03-05

    申请人： Alexander A. Maltsev ,  Andrey V. Pudeyev ,  Ali S. Sadri

    发明人： Alexander A. Maltsev ,  Andrey V. Pudeyev ,  Ali S. Sadri

    IPC分类号： H04L27/00

    CPC分类号： H04L25/0216 ,  H04L25/0218 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/025 ,  H04L27/2647

    摘要： Briefly, in accordance with one embodiment of the invention, a channel estimator may be adapted to provide a channel estimate based at least in part on an estimated delay spread. The channel estimator may be adapted to provide a more accurate channel estimation in the event of a lower estimated delay spread. In one embodiment, the channel estimator provides a frequency domain channel estimate, and in another embodiment the channel estimator provides a time domain channel estimate.

    摘要翻译： 简而言之，根据本发明的一个实施例，信道估计器可以适于至少部分地基于估计的延迟扩展来提供信道估计。 信道估计器可以适于在估计延迟扩展较低的情况下提供更准确的信道估计。 在一个实施例中，信道估计器提供频域信道估计，并且在另一实施例中，信道估计器提供时域信道估计。

    System and method for channelization recognition in a wideband communication system
    5.
    发明授权
    System and method for channelization recognition in a wideband communication system 有权
    宽带通信系统中信道化识别的系统和方法

    公开(公告)号：US07286606B2

    公开(公告)日：2007-10-23

    申请号：US10728476

    申请日：2003-12-04

    申请人： Alexander A. Maltsev ,  Ali S. Sadri ,  Andrey V. Pudeyev

    发明人： Alexander A. Maltsev ,  Ali S. Sadri ,  Andrey V. Pudeyev

    IPC分类号： H04K1/00

    CPC分类号： H04L5/0044 ,  H04L5/0007 ,  H04L27/2647

    摘要： The channelization of a WB OFDM channel may be determined by detecting a plurality of subchannels and generate a channelization vector indicating which of the subchannels are active and which of the subchannels are inactive. In response to the channelization vector, data-symbol processing may be performed on the active subchannels and may be refrained from being performed on the inactive subchannels. In some embodiments, a decoded bit stream may be generated from the combined contributions of the active channels. In some embodiments, the subchannels may be detected with a parallel set of matched filters. The matched filters may have a coefficient spectrum matched to a corresponding one of the subchannels.

    摘要翻译： 可以通过检测多个子信道来确定WB OFDM信道的信道化，并且生成指示哪个子信道是活动的以及哪个子信道是非活动的信道化向量。 响应于信道化向量，可以对活动子信道执行数据符号处理，并且可以避免对非活动子信道执行。 在一些实施例中，解码比特流可以从活动信道的组合贡献产生。 在一些实施例中，可以用并行的一组匹配滤波器来检测子信道。 匹配滤波器可以具有与相应的一个子信道匹配的系数频谱。

    Method, device, and apparatus for multi-stream multi-band transmission
    6.
    发明申请
    Method, device, and apparatus for multi-stream multi-band transmission 有权
    用于多流多波段传输的方法，装置和装置

    公开(公告)号：US20080310526A1

    公开(公告)日：2008-12-18

    申请号：US11812283

    申请日：2007-06-18

    申请人： Alexander A. Maltsev ,  Alexey E. Rubtsov ,  Ali S. Sadri ,  Andrey V. Pudeyev ,  Sergey Tiraspolsky ,  Alexey Davydov

    发明人： Alexander A. Maltsev ,  Alexey E. Rubtsov ,  Ali S. Sadri ,  Andrey V. Pudeyev ,  Sergey Tiraspolsky ,  Alexey Davydov

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2628

    摘要： A transmitter may include a set of stream groups, each including two or more streams producing a set of orthogonal frequency division multiplexed (OFDM) stream-symbols and a coding unit interleaving the stream-symbols into an interleaved signal. An input bit multiplexer may route an input data signal to be divided among each of the streams. An inverse fast Fourier transform unit may operate on a combined signal formed from interleaving the interleaved signals from each stream group. Each stream may include for example a baseband signal processor producing the OFDM stream-symbols.

    摘要翻译： 发射机可以包括一组流组，每组包括产生一组正交频分复用（OFDM）流符号的两个或更多个流，以及将流符号交织到交织信号中的编码单元。 输入位复用器可以路由要在每个流之间划分的输入数据信号。 反相快速傅立叶变换单元可以对从每个流组交织的交错信号形成的组合信号进行操作。 每个流可以包括例如产生OFDM流符号的基带信号处理器。

    System and method for two channel frequency offset estimation of OFDM signals
    8.
    发明授权
    System and method for two channel frequency offset estimation of OFDM signals 有权
    OFDM信号双信道频偏估计的系统和方法

    公开(公告)号：US07336597B2

    公开(公告)日：2008-02-26

    申请号：US10675240

    申请日：2003-09-30

    申请人： Alexander A. Maltsev ,  Andrey V. Pudeyev ,  Alexei M. Soupikov ,  Dmitry V. Akhmetov

    发明人： Alexander A. Maltsev ,  Andrey V. Pudeyev ,  Alexei M. Soupikov ,  Dmitry V. Akhmetov

    IPC分类号： H04J11/00

    CPC分类号： H04L27/266 ,  H04L27/2659 ,  H04L27/2675

    摘要： An orthogonal frequency division multiplexed (OFDM) receiver achieves improved frequency synchronization by generating a fine frequency offset of an OFDM packet with a two-channel frequency offset estimation scheme. Concurrent autocorrelations are performed with training symbols delayed by one and two durations of the training symbols. The respective correlation outputs are integrated over one and a half durations and one half duration to generate phase shift estimates. The phase shift estimates are weighted and combined to generate the fine frequency offset estimate which is used to rotate the phase of OFDM data symbols prior to performing a Fast Fourier Transform (FFT) on the data symbols.

    摘要翻译： 正交频分复用（OFDM）接收机通过利用双信道频偏估计方案生成OFDM分组的精细频率偏移来实现改进的频率同步。 训练符号延时一个和两个持续时间的训练符号执行并发自相关。 相应的相关输出在一个半持续时间和一半的时间内被积分以产生相移估计。 相移估计被加权并组合以产生精细频率偏移估计，其用于在对数据符号执行快速傅里叶变换（FFT）之前旋转OFDM数据符号的相位。

    Receiver and method to detect and synchronize with a symbol boundary of an OFDM symbol
    9.
    发明授权
    Receiver and method to detect and synchronize with a symbol boundary of an OFDM symbol 有权
    用于检测和与OFDM符号的符号边界同步的接收机和方法

    公开(公告)号：US07251282B2

    公开(公告)日：2007-07-31

    申请号：US10675213

    申请日：2003-09-30

    申请人： Alexander A. Maltsev ,  Andrey V. Pudeyev ,  Alexei M. Soupikov ,  Sergey A. Triaspolsky

    发明人： Alexander A. Maltsev ,  Andrey V. Pudeyev ,  Alexei M. Soupikov ,  Sergey A. Triaspolsky

    IPC分类号： H04K1/10 ,  H04B1/69

    CPC分类号： H04L27/2675 ,  H04L7/041 ,  H04L7/10 ,  H04L27/2663 ,  H04L27/2665

    摘要： An OFDM packet is initially detected by auto-correlating short training symbols to generate an initial packet detection signal. The initial packet detection signal may be used to initiate a coarse timing synchronization process, which may use a short symbol matched filter. A coarse timing signal may be generated from at least some of the short training symbols by correlating sampled short training symbols with short filter matched coefficients. The coarse-timing signal may be used to initiate the operation of a fine timing synchronization process, which may use a long symbol matched filter. A fine timing signal may be generated from at least some of the long training symbols by correlating sampled long training symbols with long filter-matched coefficients. The fine timing signal may be used to initiate channel estimation by performing a Fast Fourier Transform (FFT) operation on the long training symbols. The fine timing signal may also be used to initiate data signal processing using the channel estimation and may include starting an FFT operation on data symbols.

    摘要翻译： 最初通过自动相关短训练符号来检测OFDM分组，以产生初始分组检测信号。 初始分组检测信号可以用于发起可以使用短符号匹配滤波器的粗略定时同步过程。 通过将采样的短训练符号与短的滤波器匹配系数相关联，可以从至少一些短训练符号生成粗定时信号。 粗定时信号可以用于启动精细定时同步过程的操作，其可以使用长符号匹配滤波器。 通过将采样的长训练符号与长滤波器匹配系数相关联，可以从至少一些长训练符号生成精细定时信号。 精细定时信号可以用于通过对长训练符号执行快速傅里叶变换（FFT）操作来启动信道估计。 精细定时信号也可以用于使用信道估计来启动数据信号处理，并且可以包括对数据符号开始FFT操作。