Adler滑动窗译码算法的改进

IMPROVEMENT ON ALGORITHM OF ADLER'S SLIDING BLOCK CODES

Ａｄｌｅｒ等人的滑动窗译码算法能保证滑动窗译码，但对状态的归并重视不够．根据状态分裂原理，文中提出了改进Ａｄｌｅｒ等人算法的想法，以及朝前看译码方式下的改进规则文章以２／３（１，７）码为例，说明对Ａｄｌｅｒ算法改进的操作步骤。所得结果比Ａｄｌｃｒ等人算法的结果少用一个编码状态．

Adler et al.'S algorithm can gtlarantee the sliding block decodable.However state merging is less considersd. According to state splitting rule,in this paper the ideas about how to improye the Adler et al.'s algorithm and improved rule under looking before decoding mode are presented.In the end of this paper,practical design procedure which improves Adler's algorithm by using.2/3(1,7)code is described and this procedure uses one coding state less than Adler et al.'s algorithm.