We use Arithmetic coding algorithm to generate codeword first and re-code the codeword according to their length.A re-coded codeword is composed of a group codeword and an offset.

• 在涡轮码的架构中用来储存分支路径值以状态路径直的记忆体，不论是在功率的消耗或是面积上都占了整个架构的大部分。