At first, the principle of algebraic quadratic congruence mapping is analysed, and then limitation of odd-even protection and shift computation are added to the mapping of interleaver.

• 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。