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    • 5. 发明申请
    • CONCATENATED AND SLIDING-WINDOW POLAR CODING
    • 连续和滑动窗口极化编码
    • WO2017125046A1
    • 2017-07-27
    • PCT/CN2017/071735
    • 2017-01-19
    • HUAWEI TECHNOLOGIES CO., LTD.
    • GE, YiqunSHI, Wuxian
    • H04L9/28
    • H03M13/3972H03M13/09H03M13/13H03M13/2927H03M13/616
    • Methods for encoding and decoding Polar codes are provided, together with apparatuses for performing the methods. An encoding method combines first and second sequences of information bits and CRC bits and a plurality of frozen bits into an input vector. The input vector is multiplied by a generator matrix for a Polar code to produce a concatenated codeword. A decoding method receives such a codeword and produces a decoded vector by generating successive levels of a decision tree. For a first number of levels of the decision tree, paths beyond a first maximum number of most probable paths are discarded. For a second number of levels of the decision tree, paths beyond a second maximum number of most probable paths are discarded. In some cases, the decoding method may have improved performance compared to some decoding methods for non-concatenated codewords.
    • 提供了用于编码和解码极性码的方法,以及用于执行这些方法的设备。 编码方法将信息比特的第一和第二序列以及CRC比特和多个冻结比特组合成输入向量。 输入向量乘以Polar码的生成矩阵以产生级联码字。 解码方法接收这样的码字并通过产生连续的决策树级别来产生解码的矢量。 对于决策树的第一级数目,丢弃超出第一最大数目的最可能路径的路径。 对于决策树的第二级数目,丢弃超出第二最大数目的最可能路径的路径。 在一些情况下,解码方法与用于非级联码字的一些解码方法相比可以具有改进的性能。