伪随机交织器设计的改进

Improvement of the Design of Pseudo random Interleaver

文章在给出Turbo码系统中交织器设计要求的基础上分析了伪随机交织器的工作原理,并针对其存在的缺点,通过对其随机数的产生加入一定的约束条件,得到一种改进形式的伪随机交织器,通过理论分析和数值仿真验证了这种改进是有效的。同时给出了降低交织器复杂性的方法。

In this paper, we analyzed the principle of pseudo random interleaver based on the design request of in-terleavers in turbo codes system. Aimed at the disadvantage of it, we got a new type of interleaver that is the improvement form of pseudo random interleaver by adding a certain restrict condition to the generation of the random numbers. By the theoretic analysis and numeric simulation test, we proved that the modification of it is effective. At last, we carried out the way to reduce the complexity of interleavers.