有一个基本的格子结构必须提供的Viterbi译码算法。因此，有两个步骤需要在一个特定组合的格子和调制的仿真：第一就是棚架结构。- Trellis structure，TCM schemes have an underlying trellis structure that must be provided to the Viterbi decoding algorithm. Therefore, there are two steps required in the simulation o