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    Filter with signal taps temporally spaced at fractional symbol intervals
    1.
    发明授权
    Filter with signal taps temporally spaced at fractional symbol intervals 有权
    用分数符号间隔时间间隔的信号抽头滤波

    公开(公告)号：US07301998B2

    公开(公告)日：2007-11-27

    申请号：US10742119

    申请日：2003-12-19

    申请人： Bhushan Asuri ,  Anush A. Krishnaswami ,  William J. Chimitt

    发明人： Bhushan Asuri ,  Anush A. Krishnaswami ,  William J. Chimitt

    IPC分类号： H03K5/159

    CPC分类号： H04L25/03044 ,  H04L7/02 ,  H04L2025/03509 ,  H04L2025/03611 ,  H04L2025/03681

    摘要： Described are methods and devices for processing a signal transmitting symbols which are temporally spaced on symbol intervals. The signal may be tapped at fractional symbol intervals to provide a plurality of signal taps at the fractional symbol intervals. Each of a plurality of coefficients may be applied to a corresponding one of the signal taps to generate an equalized signal. For at least one of the signal taps, the corresponding coefficient may be updated no more frequently than once per symbol interval.

    摘要翻译： 描述了用于处理在符号间隔上在时间上间隔开的符号的信号的方法和装置。 信号可以以分数符号间隔被抽头以在分数符号间隔处提供多个信号抽头。 多个系数中的每一个可以被施加到相应的一个信号抽头以产生均衡的信号。 对于至少一个信号抽头，相应的系数可以不再比每个符号间隔更频繁地更新。

    Feedback filter
    2.
    发明授权
    Feedback filter 失效
    反馈过滤器

    公开(公告)号：US07561619B2

    公开(公告)日：2009-07-14

    申请号：US10741029

    申请日：2003-12-19

    申请人： Bhushan Asuri ,  Anush A. Krishnaswami ,  William J. Chimitt

    发明人： Bhushan Asuri ,  Anush A. Krishnaswami ,  William J. Chimitt

    IPC分类号： H03H7/30

    CPC分类号： H04L25/03057 ,  H03H21/0012 ,  H04L2025/0349 ,  H04L2025/03598

    摘要： Disclosed are a system, method and device for generating an equalized signal from an input signal. Symbols in the equalized signal may be detected on each of a sequence of symbol intervals to recover a symbol value in the symbol interval. A feedback coefficient may be applied to a symbol value recovered in a previous symbol interval to generate the equalized signal in a current symbol interval. The feedback coefficient may be generated based, at least in part, on an estimated error associated with the equalized signal. The estimated error associated with the equalized output signal from among a plurality of candidate estimated error values.

    摘要翻译： 公开了一种用于从输入信号产生均衡信号的系统，方法和装置。 可以在符号间隔的每一个上检测均衡信号中的符号，以恢复符号间隔中的符号值。 可以将反馈系数应用于在先前符号间隔中恢复的符号值，以在当前符号间隔中生成均衡信号。 可以至少部分地基于与均衡信号相关联的估计误差来生成反馈系数。 与多个候选估计误差值中的均衡输出信号相关联的估计误差。

    Multiple-output transmitter for transmitting a plurality of spatial streams
    5.
    发明授权
    Multiple-output transmitter for transmitting a plurality of spatial streams 有权
    用于发送多个空间流的多输出发送器

    公开(公告)号：US07899128B2

    公开(公告)日：2011-03-01

    申请号：US12506049

    申请日：2009-07-20

    申请人： William J. Chimitt ,  Stanley K. Ling ,  Sumeet Sandhu

    发明人： William J. Chimitt ,  Stanley K. Ling ,  Sumeet Sandhu

    IPC分类号： H04L23/02

    CPC分类号： H04L1/0041 ,  H04B7/0669 ,  H04B7/0697 ,  H04L1/0071 ,  H04L1/06 ,  H04L27/2602 ,  H04L27/2626

    摘要： A multiple output transmitter is configured for transmitting a single input data stream over two or more spatial channels using OFDM signals. The transmitter includes a commutator to select bits from the single input data stream for two or more bit streams and two or more encoders each to encode bits of one of the bit streams. The commutator operates at a bit rate and sequentially provides the selected bits of the input data stream to the encoders. A spatial bit sequencer selects groups of encoded bits from each of the encoders and assigns individual bits of a selected group at the bit-rate to block permuters in a sequential manner to distribute bits from the selected group across the block permuters. The block permuters produce interleaved blocks of bits for an associated spatial stream. The commutator assigns bits of the input bit stream to more than one encoder to allow each encoder to operate at a lower rate.

    摘要翻译： 多输出发送器被配置为使用OFDM信号在两个或更多个空间信道上发送单个输入数据流。 发射机包括一个换向器，用于从单个输入数据流中为两个或多个比特流选择比特，以及两个或更多个编码器，每个编码器对一个比特流的比特进行编码。 换向器以比特率工作，并且将输入数据流的选定位顺序地提供给编码器。 空间比特序列器从每个编码器中选择编码比特组，并以比特率分配所选择的组的各个比特以按顺序方式来排列置换，从而在块排列中分配来自所选组的比特。 块置换器产生用于相关联的空间流的交错比特块。 换向器将输入位流的位分配给多个编码器，以允许每个编码器以较低的速率运行。

    MULTIPLE-OUTPUT TRANSMITTER FOR TRANSMITTING A PLURALITY OF SPATIAL STREAMS
    6.
    发明申请
    MULTIPLE-OUTPUT TRANSMITTER FOR TRANSMITTING A PLURALITY OF SPATIAL STREAMS 有权
    用于传输大量空间流的多输出变送器

    公开(公告)号：US20090279629A1

    公开(公告)日：2009-11-12

    申请号：US12506049

    申请日：2009-07-20

    申请人： William J. Chimitt ,  Stanley K. Ling ,  Sumeet Sandhu

    发明人： William J. Chimitt ,  Stanley K. Ling ,  Sumeet Sandhu

    IPC分类号： H04L23/02 ,  H04L27/28

    CPC分类号： H04L1/0041 ,  H04B7/0669 ,  H04B7/0697 ,  H04L1/0071 ,  H04L1/06 ,  H04L27/2602 ,  H04L27/2626

    摘要： A multiple output transmitter is configured for transmitting a single input data stream over two or more spatial channels using OFDM signals. The transmitter includes a commutator to select bits from the single input data stream for two or more bit streams and two or more encoders each to encode bits of one of the bit streams. The commutator operates at a bit rate and sequentially provides the selected bits of the input data stream to the encoders. A spatial bit sequencer selects groups of encoded bits from each of the encoders and assigns individual bits of a selected group at the bit-rate to block permuters in a sequential manner to distribute bits from the selected group across the block permuters. The block permuters produce interleaved blocks of bits for an associated spatial stream. The commutator assigns bits of the input bit stream to more than one encoder to allow each encoder to operate at a lower rate.

    摘要翻译： 多输出发送器被配置为使用OFDM信号在两个或更多个空间信道上发送单个输入数据流。 发射机包括一个换向器，用于从单个输入数据流中为两个或多个比特流选择比特，以及两个或更多个编码器，每个编码器对一个比特流的比特进行编码。 换向器以比特率工作，并且将输入数据流的选定位顺序地提供给编码器。 空间位序列发生器从每个编码器中选择编码比特组，并以比特率分配选定组的各个比特，以顺序方式块排列，从而在块排列中分配来自所选组的比特。 块置换器产生用于相关联的空间流的交错比特块。 换向器将输入位流的位分配给多个编码器，以允许每个编码器以较低的速率运行。