To fully make use of the information on the algebra structure of the tail-biting codes,we com-bined the WAVA algorithm with the algebraic decoding,and propose a new joint probability-algebraic decoding algorithm. Simulation results show that,compared with the single probability decoding,the new algorithm has better performance on the error correction.%充分利用咬尾卷积码编码器的线性信息，将WAVA这种概率译码同代数译码算法进行级联，得出一种新的复杂度较低的概率-代数联合译码算法，经仿真得出，该算法使得咬尾卷积码的纠错性能较单一概率译码获得进一步提升。
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