首先分析算术二次同余映射的原理 ,然后在此基础上对交织器的映射关系加以保奇偶序限制和移位运算 ,从而得到两个改进型的算术映射交织算法。通过仿真对改进型交织器的性能进行验证 ,结果说明在复杂度可比的情况下 ,改进后的交织器比传统分组交织器具有更好的译码性能。 First of all, the principle of arithmetic congruent mapping is analyzed. Then on the basis of this, we preserve the even and odd order and shift operation of the mapping relationship of interleaver, and then get two improved arithmetic mapping interleaving algorithm. The performance of the improved interleaver is verified through simulation. The results show that the improved interleaver has better decoding performance than the traditional packet interleaver with comparable complexity.