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    Tiled-building-block trellis encoders
    1.
    发明授权
    Tiled-building-block trellis encoders 失效
    平铺砖块格栅编码器

    公开(公告)号：US08077790B2

    公开(公告)日：2011-12-13

    申请号：US11976214

    申请日：2007-10-23

    申请人： Eric Morgan Dowling ,  John P. Fonseka

    发明人： Eric Morgan Dowling ,  John P. Fonseka

    IPC分类号： H04L23/02

    CPC分类号： H04L27/3416 ,  H03M13/31 ,  H04L1/005 ,  H04L1/0059 ,  H04L5/0007 ,  H04L25/03203 ,  H04L25/4917 ,  H04L27/2604 ,  H04L27/2627 ,  H04L27/3488 ,  H04L27/364 ,  H04L2025/03363 ,  H04L2025/03414 ,  H04L2025/0342 ,  H04L2025/03458

    摘要： A first convolutional coder (building-block trellis coder) is used to establish a minimum squared Euclidian distance (MSED) between signal points within a coded constellation building block. A second convolutional encoder (tiling encoder) is designed to ensure that the building block's MSED is maintained between building blocks once they are tiled onto an integer lattice. When this approach is applied to the trellis code of the WiMAX standard, a 3 dB coding is realized. Recall that Wei's 16-state 4D code suffered from a 1.36 dB due to constellation expansion, resulting in a net 4.66 dB coding gain. Our building block approach recovers 1.33 dB of this loss with only a minor increase in coding complexity. We then use the building block approach to derive simpler and more powerful higher dimensional codes that provide further gains still over the Wei family of multidimensional codes.

    摘要翻译： 使用第一个卷积编码器（构建块网格编码器）在编码星座构建块内的信号点之间建立最小平方欧几里得距离（MSED）。 第二个卷积编码器（平铺编码器）被设计成确保构建块的MSED在平铺到整数格子之后保持在构建块之间。 当将该方法应用于WiMAX标准的网格码时，实现3dB编码。 回想一下，由于星座扩展，魏的16状态4D码受到1.36 dB的影响，导致了4.36 dB的净增益。 我们的构建块方法恢复了1.33 dB的这种损失，只是编码复杂度略有增加。 然后，我们使用构建块方法来获得更简单和更强大的更高维度的代码，这些代码还提供了魏氏多维代码的进一步收益。

    METHOD AND SYSTEM FOR TEMPORAL AUTOCORRELATION FILTERING
    2.
    发明申请
    METHOD AND SYSTEM FOR TEMPORAL AUTOCORRELATION FILTERING 有权
    用于时间自动滤波的方法和系统

    公开(公告)号：US20080107159A1

    公开(公告)日：2008-05-08

    申请号：US11972321

    申请日：2008-01-10

    申请人： Carroll Gossett ,  Michial Gunter

    发明人： Carroll Gossett ,  Michial Gunter

    IPC分类号： H04B1/707

    CPC分类号： H04B1/707 ,  H04L25/03038 ,  H04L2025/03458 ,  H04L2025/03471

    摘要： An autocorrelation filter for use with a spread spectrum receiver. The autocorrelation filter can be used as a prefilter stage to reduce phase distortion present in a spread spectrum signal. The autocorrelation filter can be used to process the output from a lattice filter. The lattice filter is configured to remove magnitude distortion from the spread spectrum signal. The autocorrelation filter performs a series of correlations on the output of the lattice filter. The results of these correlations are integrated over a period of time to generate a running impulse response for characterizing and removing the phase distortion in the spread spectrum signal.

    摘要翻译： 一种与扩频接收机一起使用的自相关滤波器。 自相关滤波器可以用作预滤波器级，以减少扩频信号中存在的相位失真。 自相关滤波器可用于处理格子滤波器的输出。 格子滤波器被配置为从扩频信号中去除幅度失真。 自相关滤波器对晶格滤波器的输出执行一系列相关。 这些相关性的结果在一段时间内被积分，以产生用于表征和去除扩频信号中的相位失真的运行脉冲响应。

    Transmitting apparatus for transmitting in a multi-carrier system using multiple antennas and receiving apparatus in the same system
    9.
    发明授权
    Transmitting apparatus for transmitting in a multi-carrier system using multiple antennas and receiving apparatus in the same system 有权
    用于在同一系统中使用多个天线和接收装置在多载波系统中进行发送的发射装置

    公开(公告)号：US07773500B2

    公开(公告)日：2010-08-10

    申请号：US12096520

    申请日：2006-12-04

    申请人： Jong-Ee Oh ,  Dong-Seung Kwon

    发明人： Jong-Ee Oh ,  Dong-Seung Kwon

    IPC分类号： H04J11/00

    CPC分类号： H04L1/0668 ,  H04L1/0625 ,  H04L1/0631 ,  H04L25/067 ,  H04L27/2647 ,  H04L2025/03458

    摘要： A transmitting apparatus and receiving apparatus of a multi-carrier system using multiple antennas is proposed. A linear complex field (LCF) encoder performs linear precoding of input signals to be transmitted using a linear complex matrix based on the number of antennas and the number of subcarriers, and a subcarrier allocator allocates a subcarrier to each precoded signal. A transmitter transmits the signals through the multiple antennas. In a receiving apparatus, a subcarrier de-allocator extracts a linear-precoded signal by de-allocating a subcarrier of the received signal, and an LCF decoder outputs a bit reliability of the received signal based on the number m of antennas and the number n of subcarriers. Performance may be improved by using space diversity using multiple antennas and frequency diversity using OFDMA, and system complexity may be reduced by using a lattice reduction and a 2-branch Chase decoder.

    摘要翻译： 提出了使用多个天线的多载波系统的发送装置和接收装置。 线性复场编码器（LCF）编码器使用基于天线数和子载波数的线性复数矩阵来执行要发送的输入信号的线性预编码，并且子载波分配器向每个预编码信号分配副载波。 发射机通过多个天线发送信号。 在接收装置中，子载波去分配器通过解除分配接收信号的子载波来提取线性预编码信号，并且LCF解码器基于天线数m和数n来输出接收信号的比特可靠性 的子载波。 通过使用使用多个天线的空间分集和使用OFDMA的频率分集可以提高性能，并且可以通过使用格子减少和2分支Chase解码器来减少系统复杂度。

    Tiled-building-block trellis encoders
    10.
    发明申请
    Tiled-building-block trellis encoders 失效
    平铺砖块格栅编码器

    公开(公告)号：US20090103646A1

    公开(公告)日：2009-04-23

    申请号：US11976214

    申请日：2007-10-23

    申请人： Eric Morgan Dowling ,  John P. Fonseka

    发明人： Eric Morgan Dowling ,  John P. Fonseka

    IPC分类号： H04L5/12 ,  H04L23/02

    CPC分类号： H04L27/3416 ,  H03M13/31 ,  H04L1/005 ,  H04L1/0059 ,  H04L5/0007 ,  H04L25/03203 ,  H04L25/4917 ,  H04L27/2604 ,  H04L27/2627 ,  H04L27/3488 ,  H04L27/364 ,  H04L2025/03363 ,  H04L2025/03414 ,  H04L2025/0342 ,  H04L2025/03458

    摘要： A first convolutional coder (building-block trellis coder) is used to establish a minimum squared Euclidian distance (MSED) between signal points within a coded constellation building block. A second convolutional encoder (tiling encoder) is designed to ensure that the building block's MSED is maintained between building blocks once they are tiled onto an integer lattice. When this approach is applied to the trellis code of the WiMAX standard, a 3 dB coding is realized. Recall that Wei's 16-state 4D code suffered from a 1.36 dB due to constellation expansion, resulting in a net 4.66 dB coding gain. Our building block approach recovers 1.33 dB of this loss with only a minor increase in coding complexity. We then use the building block approach to derive simpler and more powerful higher dimensional codes that provide further gains still over the Wei family of multidimensional codes.

    摘要翻译： 使用第一个卷积编码器（构建块网格编码器）在编码星座构建块内的信号点之间建立最小平方欧几里得距离（MSED）。 第二个卷积编码器（平铺编码器）被设计成确保构建块的MSED在平铺到整数格子之后保持在构建块之间。 当将该方法应用于WiMAX标准的网格码时，实现3dB编码。 回想一下，由于星座扩展，魏的16状态4D码受到1.36 dB的影响，导致了4.36 dB的净增益。 我们的构建块方法恢复了1.33 dB的这种损失，只是编码复杂度略有增加。 然后，我们使用构建块方法来获得更简单和更强大的更高维度的代码，这些代码还提供了魏氏多维代码的进一步收益。