极化码在高斯信道下的信息位选择  

Selection of Information Bit of Polar Code under AWGN Channel

作　　者：崔茵[1] 倪卫明[1] 

机构地区：[1]复旦大学信息科学与工程学院

出　　处：《微型电脑应用》2016年第5期68-72,共5页Microcomputer Applications

摘　　要：极化码是第一种、也是目前已知的唯一一种在任意二进制输入的对称信道下能够被证明"达到"信道容量的信道编码方法,因而受到国内外编码领域的学者的追捧。基于信道极化现象,信道可分为纯噪信道和无噪信道,如何选出无噪信道传输有用信息成为极化码编码的关键技术之一。极化码对信道类型的敏感性决定了极化码在不同的信道类型下,信息位的具体选择方式有所不同,极化码在高斯信道下的信息位选择方案将予以总结分析。The polar code, which has been popular among the channel coding area, is the first and the unique method that could be proved to construct capacity-achieving codes for any symmetric binary-input discrete memoryless channels. Based on the channel polarization, N copies of the channels can be divided into two parts, the noiseless channel and the pure noise channel. How to select the good channel has been of one the key points while applying the polar codes. At the same time, polar codes is sensitive to the type of channel, which determines that it will be different to choose the good channels when the type of the channel is different.

关 键 词：极化码 信道极化 高斯信道 信息位 

分 类 号：TN911.22[电子电信—通信与信息系统]