文件名称：信道编码-华为CDMA2000
文件大小：3.95MB
文件格式：PPT
更新时间：2024-05-13 05:52:00
cdma
信道编码 信道编码采用卷积码或者TURBO码。 对于卷积码： 约束长度：移位寄存器数+1。 编码效率：输入bit数 / 输出bit数。 卷积码编码器 Input (bits) Output (symbols) CDMA 核心技术 convolution code is an error correcting code. Convolution aims to associate a previous signal with a subsequent one and the association of the previous signal and the subsequent one actually means that this signal is capable of detecting and/or correcting an error. Error correcting or error detecting certainly will increase some redundancy signals, therefore the output bit rate increases to 3 times that at the input terminal of a convolution encoder.