维特比算法用于扩频信道译码，与Turboo码,卷积码，级联码构成编码系统-Viterbi Algorithm for spread spectrum channel decoding, and Turboo code, convolutional codes, concatenated coding system code constitute

A concatenated code is composed of two separate codes that are combined to form a larger code. There are two types of concatenation, serial and parallel concatenations. For both serial and parallel concatenation schemes, an interleaver is often used