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    • 8. 发明申请
    • METHOD AND APPARATUS FOR IMPROVED SPATIAL TEMPORAL TURBO CHANNEL CODING (STTCC) USING EIGEN-BEAMFORMING
    • 用于改进空间波纹通道编码(STTCC)的方法和装置使用EIGEN-BEAMFORMING
    • US20070291868A1
    • 2007-12-20
    • US11760266
    • 2007-06-08
    • Robert OlesenSung-Hyuk Shin
    • Robert OlesenSung-Hyuk Shin
    • H04L1/02
    • H04L1/0041H04B7/0434H04B7/0478H04L1/0003H04L1/0009H04L1/0066H04L1/06
    • 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.
    • 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。