Method and apparatus for improved spatial temporal turbo channel coding (STTCC) using eigen-beamforming
    6.
    发明授权
    Method and apparatus for improved spatial temporal turbo channel coding (STTCC) using eigen-beamforming 失效
    使用特征波束形成改进空间时间Turbo信道编码(STTCC)的方法和装置

    公开(公告)号:US08385451B2

    公开(公告)日:2013-02-26

    申请号:US11760266

    申请日:2007-06-08

    IPC分类号: H04B7/02 H04L25/49

    摘要: The present invention is a method and apparatus for improving the performance of spatial temporal turbo channel coding (STTCC) used in multiple-input multiple-output (MIMO) wireless communication systems called eigen-STTCC (E-STTCC) that employs eigen-beamforming to make use of orthogonal eigen streams in the MIMO channel. Singular value decomposition (SVD) is applied to the channel matrix producing a linear precoding matrix containing the orthonormal basis for the eigen streams. In a first embodiment, the turbo encoded codeword containing concatenated systematic and parity bits is precoded with the linear precoding matrix such that the systematic bits are transmitted over the eigen streams with highest power. In a second embodiment, the codeword is made up of interleaved systematic bits and parity bits prior to eigen beamform preceding, effectively interleaving the systematic and data bits spatially over the eigen streams. In an alternate embodiment, the data stream is interleaved at the input to the encoder.

    摘要翻译: 本发明是一种用于改善在称为特征STTCC(E-STTCC)的多输入多输出(MIMO)无线通信系统中使用的空间时间turbo信道编码(STTCC)的性能的方法和装置,其使用特征波束形成 利用MIMO信道中的正交本征流。 将奇异值分解(SVD)应用于产生包含本征流的正交基的线性预编码矩阵的信道矩阵。 在第一实施例中,包含连接的系统和奇偶校验位的turbo编码码字用线性预编码矩阵进行预编码,使得系统比特在具有最高功率的本征流上传输。 在第二实施例中,码字由在本征波束形成之前的交织的系统比特和奇偶校验位组成,有效地将系统和数据比特空间地交织在本征流上。 在替代实施例中,数据流在编码器的输入处交错。

    CHANNEL CODING AND RATE MATCHING FOR LTE CONTROL CHANNELS
    7.
    发明申请
    CHANNEL CODING AND RATE MATCHING FOR LTE CONTROL CHANNELS 审中-公开
    LTE控制信道的信道编码和速率匹配

    公开(公告)号:US20080301536A1

    公开(公告)日:2008-12-04

    申请号:US12130763

    申请日:2008-05-30

    IPC分类号: H03M13/23 G06F11/00

    摘要: A method and apparatus for channel coding and rate matching of the Physical Uplink Control Channel (PUCCH) and the Physical Downlink Control Channel (PDCCH) is disclosed that uses convolutional encoding to code the control channels. Rate matching is performed using a circular buffer based rate matching algorithm. A rate matching module may contain a single interleaver or may alternatively comprise a plurality of sub-block interleavers. Interleaved coded bits may be stored in the circular buffer in an interlaced format, or output streams from separate sub-block interleavers may be stored contiguously. When a plurality of sub-block interleavers are used, different interleaving patterns may be used. Rate matching may use bit puncturing or repetition to match the rate of the available physical channel resource. Rate matched output bits may be interleaved using a channel interleaver.

    摘要翻译: 公开了用于物理上行链路控制信道(PUCCH)和物理下行链路控制信道(PDCCH)的信道编码和速率匹配的方法和装置,其使用卷积编码来对控制信道进行编码。 使用基于循环缓冲器的速率匹配算法来执行速率匹配。 速率匹配模块可以包含单个交织器,或者可以包括多个子块交织器。 交错编码比特可以以隔行格式存储在循环缓冲器中,或者来自分开的子块交织器的输出流可以被连续地存储。 当使用多个子块交织器时,可以使用不同的交织模式。 速率匹配可以使用比特删截或重复来匹配可用物理信道资源的速率。 速率匹配输出位可以使用信道交织器进行交织。