CHASE算法中试探码集的构造方法

THE METHOD OF CONSTRUCTING TEST CODE SETS FOR CHASE ALGORITHMS

纠错编码中的软判决译码方法是一种应用前景广阔、性能优越的译码技术,Chase算法是其中具有代表性的一种。本文首先介绍了Chase算法的基本思想,然后提出了两种试探码集的构造方法。利用这些重新构造的码集,可以大幅度减少ChaseⅠ算法的试探码,改进Chase Ⅱ算法的性能。

In this paper, the basic idea of the Chase algorithm is introduced, and two methods ofconstructing test code sets are presented. By means of these sets, the number of test codes for Chase Ialgorithm can be reduced and the performance of Chase II algorithm can be improved.