一种极化码的高阶调制方式

A High-Order Modulation Method of Polar Codes

高阶调制是一种提高频谱效率的有效手段。提出一种名为移位均衡的高阶调制算法,可以在不改变编译码器的前提下,通过增加移位均衡映射来均衡高阶调制下各比特级间的性能差异。该算法具有较低的复杂度和较高的灵活性。通过仿真结果可以看出,运用移位均衡高调算法可以得到与多级编码技术相近的性能。

In this paper,a high-order modulation algorithm called displacement of balanced modulation is proposed,which can equalize the performance differences among different bit-levels by adding shift-balanced mapping without changing the encoder and decoder.The algorithm has lower complexity and higher flexibility.Simulation results is that the performance of the multilevel coding（MLC） technology can be obtained by using the displacement of balanced modulation algorithm.