高速Modem中的星座整形技术

The Constellation Shaping Technology for High-speed Modems

本文首先概述了星座整形的基本概念，然后在此基础上详细地讨论了一种应用于高速Ｍｏｄｅｍ中的多维星座的最佳整形技术──环映射（ＳｈｅｌｌＭａｐｐｉｎｇ）．结合例子，分析了这种技术的原理和性能参数，并从原理引出了一种实用的、低复杂度的实现方法，在本文的最后给出了计算机模拟结果。

In this paper , the basic concept of constellation shaping is briefly introduced in the first place, Then the author discusses the technology of optimum multi-dimensional constellation shaping , i. e ' Shell Shaping ' used in high-speed modems. The principle and performance of this technology are analyzed in connection with examples. At Last, the computer simulation results are presented.