極化編碼空間調變:極化碼設計與系統效能

Abstract

了使用極化碼，如何建造極化碼是一項非常重要的議題，也就是如何找出那些等效通道比較不好的位置。在已知的論文中，極化碼的建造方法都是圍繞在通道輸入都是二進制的狀況下。在我們的論文中，我們提出了自己的極化編碼空間調變系統並且提出新的調變方法使得密度演化，一種原本只適用於二進制通道輸入的極化碼建造方法，可以被使用。在論文的最後，我們會將我們提出的極化編碼空間調變與其他的編碼空間調變做比較，並且提出一個框架交錯的方法使的效能更加提升。

The construction of polar codes has always been the first and main topic for using polar codes in any scheme. There are several construction methods for polar codes, most of them, however, are only suitable for binary input channels. In our thesis, we build our own polar coded spatial modulation (PCSM) system and modify the famous density evolution (DE) for code construction. Also, we propose the bit-symbol mapping rule for spatial modulation that satisfied some requirement for modified DE to work. At the end, we consider block fading channel for PCSM system and propose an interleaving method that will improve the code construction and also the error performance. The error performance of PCSM is compared with other coded spatial modulation schemes at the end.