AWGN信道下Turbo码误比特率模型 在实验基础上，通过曲线拟合等数学工具，得到加性高斯白噪声信道条件下，信道编码采用turbo码，通信系统端到端的误比特率经验模型。-AWGN channel Turbo code bit error rate model in an experimental basis, through curve fitting and other mathematical tools, to be additive white Gaussian noise chan