着重对极化码编码时涉及的信道选择技术进行展开研究。在二进制删除信道(BEC)环境下,利用Bhattacharyya参数分别从信道转移概率和码长的两方面说明对信道选择的影响。(This paper focuses on the channel selection technology in polarization code coding. In the binary deleted channel (BEC) environment, Bhattacharyya parameters are u